./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/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_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/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 64bit --witnessprinter.graph.data.programhash d62e11467b4f8e6e4377d512785402cf64afe5554a5b65452d03a3048801a40a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:25:20,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:25:20,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 23:25:20,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:25:20,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:25:20,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:25:20,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:25:20,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:25:20,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:25:20,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:25:20,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:25:20,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:25:20,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:25:20,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:25:20,875 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:25:20,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:25:20,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:25:20,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:25:20,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:25:20,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:25:20,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:25:20,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:25:20,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:25:20,878 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:25:20,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:25:20,878 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:25:20,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:20,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:20,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:20,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:20,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:25:20,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:20,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:20,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:20,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:20,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:25:20,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:25:20,881 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:25:20,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:25:20,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:25:20,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:25:20,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:25:20,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:25:20,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:25:20,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:25:20,882 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_75371c9c-aff0-4c07-937f-53be14ca69a4/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62e11467b4f8e6e4377d512785402cf64afe5554a5b65452d03a3048801a40a [2024-11-27 23:25:21,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:25:21,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:25:21,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:25:21,340 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:25:21,341 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:25:21,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c [2024-11-27 23:25:25,155 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/data/d0dc29e06/711c75395e6746cd993a43d7b4a7afe1/FLAGf6083ff26 [2024-11-27 23:25:25,597 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:25:25,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c [2024-11-27 23:25:25,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/data/d0dc29e06/711c75395e6746cd993a43d7b4a7afe1/FLAGf6083ff26 [2024-11-27 23:25:25,768 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/data/d0dc29e06/711c75395e6746cd993a43d7b4a7afe1 [2024-11-27 23:25:25,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:25:25,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:25:25,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:25,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:25:25,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:25:25,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:25" (1/1) ... [2024-11-27 23:25:25,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e309c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:25, skipping insertion in model container [2024-11-27 23:25:25,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:25" (1/1) ... [2024-11-27 23:25:25,842 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:25:26,134 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_75371c9c-aff0-4c07-937f-53be14ca69a4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c[1174,1187] [2024-11-27 23:25:26,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:26,635 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:25:26,645 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_75371c9c-aff0-4c07-937f-53be14ca69a4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-back-serstep.c[1174,1187] [2024-11-27 23:25:26,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:26,950 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:25:26,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26 WrapperNode [2024-11-27 23:25:26,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:26,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:26,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:25:26,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:25:26,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:27,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:27,865 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4340 [2024-11-27 23:25:27,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:27,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:25:27,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:25:27,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:25:27,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:27,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,377 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:25:28,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:25:28,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:25:28,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:25:28,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:25:28,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (1/1) ... [2024-11-27 23:25:28,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:28,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:28,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:25:28,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:25:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:25:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:25:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:25:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:25:29,414 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:25:29,417 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:25:37,267 INFO L? ?]: Removed 2368 outVars from TransFormulas that were not future-live. [2024-11-27 23:25:37,267 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:25:37,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:25:37,331 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:25:37,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:37 BoogieIcfgContainer [2024-11-27 23:25:37,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:25:37,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:25:37,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:25:37,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:25:37,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:25:25" (1/3) ... [2024-11-27 23:25:37,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa7261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:37, skipping insertion in model container [2024-11-27 23:25:37,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:26" (2/3) ... [2024-11-27 23:25:37,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa7261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:37, skipping insertion in model container [2024-11-27 23:25:37,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:37" (3/3) ... [2024-11-27 23:25:37,350 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.1.prop1-back-serstep.c [2024-11-27 23:25:37,371 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:25:37,374 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.bakery.1.prop1-back-serstep.c that has 1 procedures, 1470 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:25:37,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:25:37,540 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;@38a65e89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:25:37,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:25:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 1470 states, 1468 states have (on average 1.4993188010899183) internal successors, (2201), 1469 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 23:25:37,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:37,577 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:37,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:37,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1826336571, now seen corresponding path program 1 times [2024-11-27 23:25:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200188990] [2024-11-27 23:25:37,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:39,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200188990] [2024-11-27 23:25:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200188990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:39,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616241930] [2024-11-27 23:25:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:39,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:39,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:39,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:39,430 INFO L87 Difference]: Start difference. First operand has 1470 states, 1468 states have (on average 1.4993188010899183) internal successors, (2201), 1469 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:39,691 INFO L93 Difference]: Finished difference Result 2857 states and 4281 transitions. [2024-11-27 23:25:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-11-27 23:25:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:39,725 INFO L225 Difference]: With dead ends: 2857 [2024-11-27 23:25:39,726 INFO L226 Difference]: Without dead ends: 1469 [2024-11-27 23:25:39,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:39,742 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6579 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:39,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6579 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2024-11-27 23:25:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2024-11-27 23:25:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 1.4979564032697548) internal successors, (2199), 1468 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2199 transitions. [2024-11-27 23:25:39,886 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2199 transitions. Word has length 159 [2024-11-27 23:25:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:39,887 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2199 transitions. [2024-11-27 23:25:39,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2199 transitions. [2024-11-27 23:25:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-27 23:25:39,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:39,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:39,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:25:39,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:39,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash 783555007, now seen corresponding path program 1 times [2024-11-27 23:25:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395302535] [2024-11-27 23:25:39,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:40,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395302535] [2024-11-27 23:25:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395302535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:40,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:40,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954276601] [2024-11-27 23:25:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:40,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:40,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:40,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:40,444 INFO L87 Difference]: Start difference. First operand 1469 states and 2199 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:40,569 INFO L93 Difference]: Finished difference Result 2858 states and 4279 transitions. [2024-11-27 23:25:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-27 23:25:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:40,579 INFO L225 Difference]: With dead ends: 2858 [2024-11-27 23:25:40,581 INFO L226 Difference]: Without dead ends: 1471 [2024-11-27 23:25:40,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:40,588 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:40,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-27 23:25:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1471. [2024-11-27 23:25:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.497278911564626) internal successors, (2201), 1470 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2201 transitions. [2024-11-27 23:25:40,661 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2201 transitions. Word has length 160 [2024-11-27 23:25:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:40,664 INFO L471 AbstractCegarLoop]: Abstraction has 1471 states and 2201 transitions. [2024-11-27 23:25:40,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2201 transitions. [2024-11-27 23:25:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-27 23:25:40,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:40,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:40,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:25:40,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:40,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1717403796, now seen corresponding path program 1 times [2024-11-27 23:25:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139862847] [2024-11-27 23:25:40,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:41,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139862847] [2024-11-27 23:25:41,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139862847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:41,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:41,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775576783] [2024-11-27 23:25:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:41,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:41,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:41,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:41,478 INFO L87 Difference]: Start difference. First operand 1471 states and 2201 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:41,647 INFO L93 Difference]: Finished difference Result 2862 states and 4283 transitions. [2024-11-27 23:25:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-27 23:25:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:41,668 INFO L225 Difference]: With dead ends: 2862 [2024-11-27 23:25:41,669 INFO L226 Difference]: Without dead ends: 1473 [2024-11-27 23:25:41,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:41,679 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:41,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-27 23:25:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2024-11-27 23:25:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1472 states have (on average 1.4966032608695652) internal successors, (2203), 1472 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2203 transitions. [2024-11-27 23:25:41,738 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2203 transitions. Word has length 161 [2024-11-27 23:25:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:41,739 INFO L471 AbstractCegarLoop]: Abstraction has 1473 states and 2203 transitions. [2024-11-27 23:25:41,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2203 transitions. [2024-11-27 23:25:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-27 23:25:41,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:41,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:41,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:25:41,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:41,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1686169370, now seen corresponding path program 1 times [2024-11-27 23:25:41,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199673015] [2024-11-27 23:25:41,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:41,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:42,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199673015] [2024-11-27 23:25:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199673015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:42,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436273905] [2024-11-27 23:25:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:42,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:42,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:42,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:42,312 INFO L87 Difference]: Start difference. First operand 1473 states and 2203 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:42,449 INFO L93 Difference]: Finished difference Result 2866 states and 4287 transitions. [2024-11-27 23:25:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-11-27 23:25:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:42,457 INFO L225 Difference]: With dead ends: 2866 [2024-11-27 23:25:42,457 INFO L226 Difference]: Without dead ends: 1475 [2024-11-27 23:25:42,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:42,461 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:42,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2024-11-27 23:25:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2024-11-27 23:25:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 1.4959294436906376) internal successors, (2205), 1474 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2205 transitions. [2024-11-27 23:25:42,514 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2205 transitions. Word has length 162 [2024-11-27 23:25:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:42,515 INFO L471 AbstractCegarLoop]: Abstraction has 1475 states and 2205 transitions. [2024-11-27 23:25:42,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2205 transitions. [2024-11-27 23:25:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 23:25:42,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:42,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:42,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:25:42,519 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:42,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 382551277, now seen corresponding path program 1 times [2024-11-27 23:25:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373205732] [2024-11-27 23:25:42,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373205732] [2024-11-27 23:25:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373205732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816187586] [2024-11-27 23:25:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:43,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:43,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:43,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:43,165 INFO L87 Difference]: Start difference. First operand 1475 states and 2205 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:43,336 INFO L93 Difference]: Finished difference Result 4239 states and 6340 transitions. [2024-11-27 23:25:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2024-11-27 23:25:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:43,349 INFO L225 Difference]: With dead ends: 4239 [2024-11-27 23:25:43,350 INFO L226 Difference]: Without dead ends: 2846 [2024-11-27 23:25:43,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:25:43,354 INFO L435 NwaCegarLoop]: 2193 mSDtfsCounter, 2014 mSDsluCounter, 6452 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 8645 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:43,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2014 Valid, 8645 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2024-11-27 23:25:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1695. [2024-11-27 23:25:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.4964580873671782) internal successors, (2535), 1694 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2535 transitions. [2024-11-27 23:25:43,418 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2535 transitions. Word has length 163 [2024-11-27 23:25:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:43,419 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2535 transitions. [2024-11-27 23:25:43,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2535 transitions. [2024-11-27 23:25:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-11-27 23:25:43,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:43,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:43,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:25:43,453 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:43,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash -444540515, now seen corresponding path program 1 times [2024-11-27 23:25:43,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:43,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666404512] [2024-11-27 23:25:43,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:43,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 23:25:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666404512] [2024-11-27 23:25:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666404512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:48,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464083880] [2024-11-27 23:25:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:48,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:48,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:48,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:48,010 INFO L87 Difference]: Start difference. First operand 1695 states and 2535 transitions. Second operand has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:48,128 INFO L93 Difference]: Finished difference Result 3098 states and 4633 transitions. [2024-11-27 23:25:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:48,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 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 856 [2024-11-27 23:25:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:48,146 INFO L225 Difference]: With dead ends: 3098 [2024-11-27 23:25:48,146 INFO L226 Difference]: Without dead ends: 1699 [2024-11-27 23:25:48,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:48,151 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 6569 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8764 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:48,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8764 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-11-27 23:25:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-11-27 23:25:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 1.4958726415094339) internal successors, (2537), 1696 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2537 transitions. [2024-11-27 23:25:48,214 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2537 transitions. Word has length 856 [2024-11-27 23:25:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:48,216 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2537 transitions. [2024-11-27 23:25:48,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2537 transitions. [2024-11-27 23:25:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2024-11-27 23:25:48,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:48,249 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:48,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:25:48,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:48,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 467664477, now seen corresponding path program 1 times [2024-11-27 23:25:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:48,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211861144] [2024-11-27 23:25:48,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:25:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211861144] [2024-11-27 23:25:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211861144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046739767] [2024-11-27 23:25:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:52,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:52,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:52,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:52,287 INFO L87 Difference]: Start difference. First operand 1697 states and 2537 transitions. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:52,404 INFO L93 Difference]: Finished difference Result 3106 states and 4643 transitions. [2024-11-27 23:25:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 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 857 [2024-11-27 23:25:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:52,415 INFO L225 Difference]: With dead ends: 3106 [2024-11-27 23:25:52,416 INFO L226 Difference]: Without dead ends: 1701 [2024-11-27 23:25:52,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:52,419 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:52,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2024-11-27 23:25:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2024-11-27 23:25:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.4952885747938751) internal successors, (2539), 1698 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2539 transitions. [2024-11-27 23:25:52,477 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2539 transitions. Word has length 857 [2024-11-27 23:25:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:52,480 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 2539 transitions. [2024-11-27 23:25:52,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2539 transitions. [2024-11-27 23:25:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2024-11-27 23:25:52,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:52,516 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:52,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:25:52,517 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:52,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash 304772342, now seen corresponding path program 1 times [2024-11-27 23:25:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622316225] [2024-11-27 23:25:52,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 23:25:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622316225] [2024-11-27 23:25:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622316225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:55,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763832689] [2024-11-27 23:25:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:55,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:55,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:55,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:55,743 INFO L87 Difference]: Start difference. First operand 1699 states and 2539 transitions. Second operand has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:55,858 INFO L93 Difference]: Finished difference Result 3114 states and 4653 transitions. [2024-11-27 23:25:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 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 858 [2024-11-27 23:25:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:55,871 INFO L225 Difference]: With dead ends: 3114 [2024-11-27 23:25:55,871 INFO L226 Difference]: Without dead ends: 1703 [2024-11-27 23:25:55,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:55,875 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:55,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-27 23:25:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2024-11-27 23:25:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.494705882352941) internal successors, (2541), 1700 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2541 transitions. [2024-11-27 23:25:55,930 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2541 transitions. Word has length 858 [2024-11-27 23:25:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:55,932 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 2541 transitions. [2024-11-27 23:25:55,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2541 transitions. [2024-11-27 23:25:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-27 23:25:55,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:55,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:55,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:25:55,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:55,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 332358532, now seen corresponding path program 1 times [2024-11-27 23:25:55,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:55,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738221837] [2024-11-27 23:25:55,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:55,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:25:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738221837] [2024-11-27 23:25:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738221837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:58,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:58,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100766123] [2024-11-27 23:25:58,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:58,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:58,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:58,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:58,547 INFO L87 Difference]: Start difference. First operand 1701 states and 2541 transitions. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:58,653 INFO L93 Difference]: Finished difference Result 3122 states and 4663 transitions. [2024-11-27 23:25:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 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 859 [2024-11-27 23:25:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:58,664 INFO L225 Difference]: With dead ends: 3122 [2024-11-27 23:25:58,666 INFO L226 Difference]: Without dead ends: 1705 [2024-11-27 23:25:58,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:58,670 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:58,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-11-27 23:25:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2024-11-27 23:25:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1702 states have (on average 1.4941245593419505) internal successors, (2543), 1702 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2543 transitions. [2024-11-27 23:25:58,721 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2543 transitions. Word has length 859 [2024-11-27 23:25:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:58,723 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2543 transitions. [2024-11-27 23:25:58,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2543 transitions. [2024-11-27 23:25:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-27 23:25:58,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:58,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:58,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:25:58,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:58,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1451860815, now seen corresponding path program 1 times [2024-11-27 23:25:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728620377] [2024-11-27 23:25:58,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-27 23:26:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:01,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728620377] [2024-11-27 23:26:01,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728620377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:01,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:01,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414512730] [2024-11-27 23:26:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:01,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:01,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:01,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:01,195 INFO L87 Difference]: Start difference. First operand 1703 states and 2543 transitions. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:01,292 INFO L93 Difference]: Finished difference Result 3130 states and 4673 transitions. [2024-11-27 23:26:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:01,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 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 860 [2024-11-27 23:26:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:01,302 INFO L225 Difference]: With dead ends: 3130 [2024-11-27 23:26:01,302 INFO L226 Difference]: Without dead ends: 1707 [2024-11-27 23:26:01,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:01,306 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:01,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2024-11-27 23:26:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1705. [2024-11-27 23:26:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.4935446009389672) internal successors, (2545), 1704 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2545 transitions. [2024-11-27 23:26:01,367 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2545 transitions. Word has length 860 [2024-11-27 23:26:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:01,369 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2545 transitions. [2024-11-27 23:26:01,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2545 transitions. [2024-11-27 23:26:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-27 23:26:01,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:01,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:01,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:26:01,388 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:01,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -506589781, now seen corresponding path program 1 times [2024-11-27 23:26:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668750226] [2024-11-27 23:26:01,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-27 23:26:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668750226] [2024-11-27 23:26:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668750226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:03,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:26:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593896829] [2024-11-27 23:26:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:03,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:26:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:03,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:26:03,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:26:03,584 INFO L87 Difference]: Start difference. First operand 1705 states and 2545 transitions. Second operand has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:03,677 INFO L93 Difference]: Finished difference Result 3138 states and 4683 transitions. [2024-11-27 23:26:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 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 861 [2024-11-27 23:26:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:03,686 INFO L225 Difference]: With dead ends: 3138 [2024-11-27 23:26:03,687 INFO L226 Difference]: Without dead ends: 1709 [2024-11-27 23:26:03,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:26:03,689 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 6569 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8764 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:03,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8764 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2024-11-27 23:26:03,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1707. [2024-11-27 23:26:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.4929660023446658) internal successors, (2547), 1706 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2547 transitions. [2024-11-27 23:26:03,733 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2547 transitions. Word has length 861 [2024-11-27 23:26:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:03,735 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2547 transitions. [2024-11-27 23:26:03,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2547 transitions. [2024-11-27 23:26:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-11-27 23:26:03,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:03,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:03,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:26:03,746 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:03,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1795378008, now seen corresponding path program 1 times [2024-11-27 23:26:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911719699] [2024-11-27 23:26:03,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:03,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-27 23:26:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911719699] [2024-11-27 23:26:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911719699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:05,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:05,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875200694] [2024-11-27 23:26:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:05,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:05,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:05,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:05,972 INFO L87 Difference]: Start difference. First operand 1707 states and 2547 transitions. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:06,042 INFO L93 Difference]: Finished difference Result 3146 states and 4693 transitions. [2024-11-27 23:26:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 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 862 [2024-11-27 23:26:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:06,051 INFO L225 Difference]: With dead ends: 3146 [2024-11-27 23:26:06,051 INFO L226 Difference]: Without dead ends: 1711 [2024-11-27 23:26:06,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:06,054 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:06,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2024-11-27 23:26:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1709. [2024-11-27 23:26:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.4923887587822013) internal successors, (2549), 1708 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2549 transitions. [2024-11-27 23:26:06,098 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2549 transitions. Word has length 862 [2024-11-27 23:26:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:06,100 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2549 transitions. [2024-11-27 23:26:06,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2549 transitions. [2024-11-27 23:26:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-11-27 23:26:06,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:06,110 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:26:06,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:06,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -980570926, now seen corresponding path program 1 times [2024-11-27 23:26:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186077686] [2024-11-27 23:26:06,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:26:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186077686] [2024-11-27 23:26:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186077686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803699842] [2024-11-27 23:26:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:08,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:08,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:08,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:08,012 INFO L87 Difference]: Start difference. First operand 1709 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:08,076 INFO L93 Difference]: Finished difference Result 3154 states and 4703 transitions. [2024-11-27 23:26:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 863 [2024-11-27 23:26:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:08,084 INFO L225 Difference]: With dead ends: 3154 [2024-11-27 23:26:08,084 INFO L226 Difference]: Without dead ends: 1713 [2024-11-27 23:26:08,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:08,089 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:08,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6569 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-27 23:26:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1711. [2024-11-27 23:26:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 1.491812865497076) internal successors, (2551), 1710 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2551 transitions. [2024-11-27 23:26:08,131 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2551 transitions. Word has length 863 [2024-11-27 23:26:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:08,133 INFO L471 AbstractCegarLoop]: Abstraction has 1711 states and 2551 transitions. [2024-11-27 23:26:08,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2551 transitions. [2024-11-27 23:26:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-27 23:26:08,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:08,143 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:08,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:26:08,143 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:08,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1073612543, now seen corresponding path program 1 times [2024-11-27 23:26:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262830316] [2024-11-27 23:26:08,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-27 23:26:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262830316] [2024-11-27 23:26:10,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262830316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:10,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775106867] [2024-11-27 23:26:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:10,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:10,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:10,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:10,300 INFO L87 Difference]: Start difference. First operand 1711 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:10,361 INFO L93 Difference]: Finished difference Result 3168 states and 4721 transitions. [2024-11-27 23:26:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 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 864 [2024-11-27 23:26:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:10,369 INFO L225 Difference]: With dead ends: 3168 [2024-11-27 23:26:10,369 INFO L226 Difference]: Without dead ends: 1725 [2024-11-27 23:26:10,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:10,372 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 3 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:10,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2024-11-27 23:26:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1715. [2024-11-27 23:26:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.4918319719953326) internal successors, (2557), 1714 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2557 transitions. [2024-11-27 23:26:10,410 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2557 transitions. Word has length 864 [2024-11-27 23:26:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:10,412 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2557 transitions. [2024-11-27 23:26:10,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2557 transitions. [2024-11-27 23:26:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2024-11-27 23:26:10,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:10,423 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:10,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:26:10,424 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:10,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1507856135, now seen corresponding path program 1 times [2024-11-27 23:26:10,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:10,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311159594] [2024-11-27 23:26:10,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-27 23:26:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311159594] [2024-11-27 23:26:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311159594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:12,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625845857] [2024-11-27 23:26:12,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:12,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:12,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:12,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:12,675 INFO L87 Difference]: Start difference. First operand 1715 states and 2557 transitions. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:12,753 INFO L93 Difference]: Finished difference Result 3182 states and 4743 transitions. [2024-11-27 23:26:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 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 865 [2024-11-27 23:26:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:12,766 INFO L225 Difference]: With dead ends: 3182 [2024-11-27 23:26:12,770 INFO L226 Difference]: Without dead ends: 1727 [2024-11-27 23:26:12,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:12,772 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 4 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:12,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-27 23:26:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1721. [2024-11-27 23:26:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.4912790697674418) internal successors, (2565), 1720 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2565 transitions. [2024-11-27 23:26:12,820 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2565 transitions. Word has length 865 [2024-11-27 23:26:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:12,822 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2565 transitions. [2024-11-27 23:26:12,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2565 transitions. [2024-11-27 23:26:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2024-11-27 23:26:12,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:12,834 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:12,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:26:12,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:12,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -803350925, now seen corresponding path program 1 times [2024-11-27 23:26:12,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:12,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107424004] [2024-11-27 23:26:12,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-27 23:26:14,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107424004] [2024-11-27 23:26:14,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107424004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:14,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:14,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:14,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931308275] [2024-11-27 23:26:14,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:14,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:14,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:14,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:14,925 INFO L87 Difference]: Start difference. First operand 1721 states and 2565 transitions. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:14,978 INFO L93 Difference]: Finished difference Result 3202 states and 4771 transitions. [2024-11-27 23:26:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 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 866 [2024-11-27 23:26:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:14,993 INFO L225 Difference]: With dead ends: 3202 [2024-11-27 23:26:14,993 INFO L226 Difference]: Without dead ends: 1733 [2024-11-27 23:26:14,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:14,996 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 4 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:14,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2024-11-27 23:26:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1727. [2024-11-27 23:26:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.4907300115874855) internal successors, (2573), 1726 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2573 transitions. [2024-11-27 23:26:15,029 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2573 transitions. Word has length 866 [2024-11-27 23:26:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:15,031 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2573 transitions. [2024-11-27 23:26:15,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2573 transitions. [2024-11-27 23:26:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2024-11-27 23:26:15,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:15,040 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:15,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:26:15,041 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:15,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1990002425, now seen corresponding path program 1 times [2024-11-27 23:26:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:15,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400452226] [2024-11-27 23:26:15,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 23:26:16,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400452226] [2024-11-27 23:26:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400452226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:16,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937138197] [2024-11-27 23:26:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:16,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:16,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:16,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:16,641 INFO L87 Difference]: Start difference. First operand 1727 states and 2573 transitions. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:16,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:16,693 INFO L93 Difference]: Finished difference Result 3222 states and 4799 transitions. [2024-11-27 23:26:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 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 867 [2024-11-27 23:26:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:16,700 INFO L225 Difference]: With dead ends: 3222 [2024-11-27 23:26:16,700 INFO L226 Difference]: Without dead ends: 1739 [2024-11-27 23:26:16,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:16,703 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 4 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:16,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2024-11-27 23:26:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1733. [2024-11-27 23:26:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4901847575057736) internal successors, (2581), 1732 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2581 transitions. [2024-11-27 23:26:16,733 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2581 transitions. Word has length 867 [2024-11-27 23:26:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:16,734 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2581 transitions. [2024-11-27 23:26:16,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:16,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2581 transitions. [2024-11-27 23:26:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2024-11-27 23:26:16,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:16,744 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:16,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:26:16,744 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:16,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash 586752229, now seen corresponding path program 1 times [2024-11-27 23:26:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:16,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724868866] [2024-11-27 23:26:16,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:26:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724868866] [2024-11-27 23:26:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724868866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:18,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679391615] [2024-11-27 23:26:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:18,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:18,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:18,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:18,451 INFO L87 Difference]: Start difference. First operand 1733 states and 2581 transitions. Second operand has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:18,519 INFO L93 Difference]: Finished difference Result 3234 states and 4815 transitions. [2024-11-27 23:26:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 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 868 [2024-11-27 23:26:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:18,527 INFO L225 Difference]: With dead ends: 3234 [2024-11-27 23:26:18,527 INFO L226 Difference]: Without dead ends: 1737 [2024-11-27 23:26:18,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:18,529 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:18,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-27 23:26:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-11-27 23:26:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1734 states have (on average 1.4896193771626298) internal successors, (2583), 1734 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2583 transitions. [2024-11-27 23:26:18,575 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2583 transitions. Word has length 868 [2024-11-27 23:26:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:18,576 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2583 transitions. [2024-11-27 23:26:18,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2583 transitions. [2024-11-27 23:26:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2024-11-27 23:26:18,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:18,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:18,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:26:18,595 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:18,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1526615886, now seen corresponding path program 1 times [2024-11-27 23:26:18,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:18,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740398334] [2024-11-27 23:26:18,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:18,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 23:26:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740398334] [2024-11-27 23:26:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740398334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:20,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:20,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502048438] [2024-11-27 23:26:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:20,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:20,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:20,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:20,295 INFO L87 Difference]: Start difference. First operand 1735 states and 2583 transitions. Second operand has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:20,356 INFO L93 Difference]: Finished difference Result 3242 states and 4825 transitions. [2024-11-27 23:26:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 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 869 [2024-11-27 23:26:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:20,362 INFO L225 Difference]: With dead ends: 3242 [2024-11-27 23:26:20,362 INFO L226 Difference]: Without dead ends: 1739 [2024-11-27 23:26:20,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:20,365 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:20,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6569 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:20,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2024-11-27 23:26:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1737. [2024-11-27 23:26:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1736 states have (on average 1.4890552995391706) internal successors, (2585), 1736 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2585 transitions. [2024-11-27 23:26:20,394 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2585 transitions. Word has length 869 [2024-11-27 23:26:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:20,395 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2585 transitions. [2024-11-27 23:26:20,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2585 transitions. [2024-11-27 23:26:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2024-11-27 23:26:20,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:20,405 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:20,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:26:20,406 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:20,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 909095454, now seen corresponding path program 1 times [2024-11-27 23:26:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066967384] [2024-11-27 23:26:20,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 23:26:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066967384] [2024-11-27 23:26:22,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066967384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:22,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:22,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:26:22,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400880388] [2024-11-27 23:26:22,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:22,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:26:22,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:22,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:26:22,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:26:22,204 INFO L87 Difference]: Start difference. First operand 1737 states and 2585 transitions. Second operand has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:22,282 INFO L93 Difference]: Finished difference Result 3256 states and 4843 transitions. [2024-11-27 23:26:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:26:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 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 870 [2024-11-27 23:26:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:22,288 INFO L225 Difference]: With dead ends: 3256 [2024-11-27 23:26:22,288 INFO L226 Difference]: Without dead ends: 1751 [2024-11-27 23:26:22,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:26:22,294 INFO L435 NwaCegarLoop]: 2192 mSDtfsCounter, 4 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:22,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6569 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2024-11-27 23:26:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1741. [2024-11-27 23:26:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 1.489080459770115) internal successors, (2591), 1740 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2591 transitions. [2024-11-27 23:26:22,330 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2591 transitions. Word has length 870 [2024-11-27 23:26:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:22,331 INFO L471 AbstractCegarLoop]: Abstraction has 1741 states and 2591 transitions. [2024-11-27 23:26:22,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2591 transitions. [2024-11-27 23:26:22,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2024-11-27 23:26:22,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:22,342 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:22,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:26:22,342 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:22,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1035911829, now seen corresponding path program 1 times [2024-11-27 23:26:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106998853] [2024-11-27 23:26:22,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-27 23:26:24,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106998853] [2024-11-27 23:26:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106998853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:24,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694659425] [2024-11-27 23:26:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:24,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:24,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:24,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:24,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:24,152 INFO L87 Difference]: Start difference. First operand 1741 states and 2591 transitions. Second operand has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:24,210 INFO L93 Difference]: Finished difference Result 3270 states and 4865 transitions. [2024-11-27 23:26:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 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 871 [2024-11-27 23:26:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:24,216 INFO L225 Difference]: With dead ends: 3270 [2024-11-27 23:26:24,216 INFO L226 Difference]: Without dead ends: 1753 [2024-11-27 23:26:24,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:24,219 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 4 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:24,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2024-11-27 23:26:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1747. [2024-11-27 23:26:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.488545246277205) internal successors, (2599), 1746 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2599 transitions. [2024-11-27 23:26:24,247 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2599 transitions. Word has length 871 [2024-11-27 23:26:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:24,248 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2599 transitions. [2024-11-27 23:26:24,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2599 transitions. [2024-11-27 23:26:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2024-11-27 23:26:24,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:24,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:24,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:26:24,260 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:24,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash -524883600, now seen corresponding path program 1 times [2024-11-27 23:26:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:24,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918478252] [2024-11-27 23:26:24,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:24,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:26:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918478252] [2024-11-27 23:26:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918478252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107813161] [2024-11-27 23:26:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:26,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:26,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:26,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:26,192 INFO L87 Difference]: Start difference. First operand 1747 states and 2599 transitions. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:26,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:26,257 INFO L93 Difference]: Finished difference Result 3290 states and 4893 transitions. [2024-11-27 23:26:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:26,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 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 872 [2024-11-27 23:26:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:26,264 INFO L225 Difference]: With dead ends: 3290 [2024-11-27 23:26:26,264 INFO L226 Difference]: Without dead ends: 1759 [2024-11-27 23:26:26,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:26,269 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 4 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:26,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6575 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2024-11-27 23:26:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1753. [2024-11-27 23:26:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 1.4880136986301369) internal successors, (2607), 1752 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2607 transitions. [2024-11-27 23:26:26,299 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2607 transitions. Word has length 872 [2024-11-27 23:26:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:26,300 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2607 transitions. [2024-11-27 23:26:26,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2607 transitions. [2024-11-27 23:26:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2024-11-27 23:26:26,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:26,312 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:26,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:26:26,312 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:26,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2019562301, now seen corresponding path program 1 times [2024-11-27 23:26:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562573349] [2024-11-27 23:26:26,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-27 23:26:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562573349] [2024-11-27 23:26:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562573349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301617309] [2024-11-27 23:26:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:27,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:27,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:27,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:27,976 INFO L87 Difference]: Start difference. First operand 1753 states and 2607 transitions. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:28,045 INFO L93 Difference]: Finished difference Result 3302 states and 4909 transitions. [2024-11-27 23:26:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 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 873 [2024-11-27 23:26:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:28,052 INFO L225 Difference]: With dead ends: 3302 [2024-11-27 23:26:28,052 INFO L226 Difference]: Without dead ends: 1757 [2024-11-27 23:26:28,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:28,055 INFO L435 NwaCegarLoop]: 2195 mSDtfsCounter, 0 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:28,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6569 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-11-27 23:26:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1755. [2024-11-27 23:26:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 1.4874572405929305) internal successors, (2609), 1754 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2609 transitions. [2024-11-27 23:26:28,085 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2609 transitions. Word has length 873 [2024-11-27 23:26:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:28,086 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2609 transitions. [2024-11-27 23:26:28,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2609 transitions. [2024-11-27 23:26:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2024-11-27 23:26:28,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:28,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:28,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:26:28,097 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:28,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1627994647, now seen corresponding path program 1 times [2024-11-27 23:26:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:28,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963064520] [2024-11-27 23:26:28,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963064520] [2024-11-27 23:26:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963064520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:30,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198295111] [2024-11-27 23:26:30,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:30,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:30,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:30,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:30,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:26:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:32,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 23:26:32,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:34,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:35,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198295111] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:35,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:26:35,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 14] total 27 [2024-11-27 23:26:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242527255] [2024-11-27 23:26:35,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:35,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:26:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:35,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:26:35,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:26:35,210 INFO L87 Difference]: Start difference. First operand 1755 states and 2609 transitions. Second operand has 9 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:38,607 INFO L93 Difference]: Finished difference Result 5780 states and 8582 transitions. [2024-11-27 23:26:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:26:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 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 874 [2024-11-27 23:26:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:38,616 INFO L225 Difference]: With dead ends: 5780 [2024-11-27 23:26:38,616 INFO L226 Difference]: Without dead ends: 4327 [2024-11-27 23:26:38,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1755 GetRequests, 1729 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:26:38,620 INFO L435 NwaCegarLoop]: 5738 mSDtfsCounter, 3801 mSDsluCounter, 23482 mSDsCounter, 0 mSdLazyCounter, 4225 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 29220 SdHoareTripleChecker+Invalid, 4308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 4225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:38,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3801 Valid, 29220 Invalid, 4308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 4225 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 23:26:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2024-11-27 23:26:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 1762. [2024-11-27 23:26:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1761 states have (on average 1.4872231686541737) internal successors, (2619), 1761 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2619 transitions. [2024-11-27 23:26:38,659 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2619 transitions. Word has length 874 [2024-11-27 23:26:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:38,660 INFO L471 AbstractCegarLoop]: Abstraction has 1762 states and 2619 transitions. [2024-11-27 23:26:38,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2619 transitions. [2024-11-27 23:26:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2024-11-27 23:26:38,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:38,668 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:38,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:26:38,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:38,870 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:38,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1305435391, now seen corresponding path program 1 times [2024-11-27 23:26:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:38,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896917159] [2024-11-27 23:26:38,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896917159] [2024-11-27 23:26:40,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896917159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637989103] [2024-11-27 23:26:40,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:40,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:40,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:40,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:26:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:43,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:26:43,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:45,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637989103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:45,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:26:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-27 23:26:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510010417] [2024-11-27 23:26:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:45,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:26:45,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:45,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:26:45,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:26:45,408 INFO L87 Difference]: Start difference. First operand 1762 states and 2619 transitions. Second operand has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:46,746 INFO L93 Difference]: Finished difference Result 7162 states and 10635 transitions. [2024-11-27 23:26:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:26:46,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 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 875 [2024-11-27 23:26:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:46,754 INFO L225 Difference]: With dead ends: 7162 [2024-11-27 23:26:46,755 INFO L226 Difference]: Without dead ends: 3159 [2024-11-27 23:26:46,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 872 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:26:46,759 INFO L435 NwaCegarLoop]: 2201 mSDtfsCounter, 5452 mSDsluCounter, 8082 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 10283 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:46,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 10283 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:26:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2024-11-27 23:26:46,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1896. [2024-11-27 23:26:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 1.4865435356200527) internal successors, (2817), 1895 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2817 transitions. [2024-11-27 23:26:46,799 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2817 transitions. Word has length 875 [2024-11-27 23:26:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:46,800 INFO L471 AbstractCegarLoop]: Abstraction has 1896 states and 2817 transitions. [2024-11-27 23:26:46,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2817 transitions. [2024-11-27 23:26:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2024-11-27 23:26:46,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:46,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:46,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:26:47,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 23:26:47,011 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:47,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1010461909, now seen corresponding path program 1 times [2024-11-27 23:26:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006544517] [2024-11-27 23:26:47,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006544517] [2024-11-27 23:26:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006544517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030087708] [2024-11-27 23:26:48,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:48,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:48,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:48,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:48,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:26:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:51,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 4051 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:26:51,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 23:26:51,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:51,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030087708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:51,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:26:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:26:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843217952] [2024-11-27 23:26:51,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:26:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:51,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:26:51,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:26:51,472 INFO L87 Difference]: Start difference. First operand 1896 states and 2817 transitions. Second operand has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:53,065 INFO L93 Difference]: Finished difference Result 4895 states and 7271 transitions. [2024-11-27 23:26:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:26:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 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 876 [2024-11-27 23:26:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:53,074 INFO L225 Difference]: With dead ends: 4895 [2024-11-27 23:26:53,074 INFO L226 Difference]: Without dead ends: 3215 [2024-11-27 23:26:53,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:26:53,078 INFO L435 NwaCegarLoop]: 1847 mSDtfsCounter, 2041 mSDsluCounter, 7342 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 9189 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:53,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 9189 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:26:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2024-11-27 23:26:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 1924. [2024-11-27 23:26:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.484659386375455) internal successors, (2855), 1923 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2855 transitions. [2024-11-27 23:26:53,119 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2855 transitions. Word has length 876 [2024-11-27 23:26:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:53,120 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 2855 transitions. [2024-11-27 23:26:53,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2855 transitions. [2024-11-27 23:26:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2024-11-27 23:26:53,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:53,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:53,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:26:53,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 23:26:53,331 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:53,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1888371997, now seen corresponding path program 1 times [2024-11-27 23:26:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:53,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470118624] [2024-11-27 23:26:53,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470118624] [2024-11-27 23:26:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470118624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88836921] [2024-11-27 23:26:54,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:54,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:54,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:54,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:54,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:26:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:57,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 4054 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:26:57,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:26:57,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88836921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:26:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:26:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93211561] [2024-11-27 23:26:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:57,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:26:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:57,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:26:57,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:26:57,611 INFO L87 Difference]: Start difference. First operand 1924 states and 2855 transitions. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:59,106 INFO L93 Difference]: Finished difference Result 4907 states and 7287 transitions. [2024-11-27 23:26:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:26:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 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 877 [2024-11-27 23:26:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:59,110 INFO L225 Difference]: With dead ends: 4907 [2024-11-27 23:26:59,110 INFO L226 Difference]: Without dead ends: 3227 [2024-11-27 23:26:59,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:26:59,112 INFO L435 NwaCegarLoop]: 1848 mSDtfsCounter, 2047 mSDsluCounter, 7343 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 9191 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:59,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 9191 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:26:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-27 23:26:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 1958. [2024-11-27 23:26:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 1.4823709759836485) internal successors, (2901), 1957 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2901 transitions. [2024-11-27 23:26:59,139 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2901 transitions. Word has length 877 [2024-11-27 23:26:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:59,139 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 2901 transitions. [2024-11-27 23:26:59,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2901 transitions. [2024-11-27 23:26:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2024-11-27 23:26:59,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:59,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:59,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:26:59,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:26:59,348 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:59,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1282922680, now seen corresponding path program 1 times [2024-11-27 23:26:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:59,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728607636] [2024-11-27 23:26:59,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:59,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:00,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728607636] [2024-11-27 23:27:00,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728607636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462709440] [2024-11-27 23:27:00,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:00,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:00,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:00,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:00,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:27:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:03,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:27:03,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:27:03,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462709440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649877694] [2024-11-27 23:27:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:03,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:03,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:03,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:03,461 INFO L87 Difference]: Start difference. First operand 1958 states and 2901 transitions. Second operand has 6 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:04,998 INFO L93 Difference]: Finished difference Result 4913 states and 7291 transitions. [2024-11-27 23:27:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 0 states have call successors, (0), 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 878 [2024-11-27 23:27:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:05,003 INFO L225 Difference]: With dead ends: 4913 [2024-11-27 23:27:05,003 INFO L226 Difference]: Without dead ends: 3223 [2024-11-27 23:27:05,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:05,006 INFO L435 NwaCegarLoop]: 1849 mSDtfsCounter, 2044 mSDsluCounter, 7344 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 9193 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:05,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 9193 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:27:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2024-11-27 23:27:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1958. [2024-11-27 23:27:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 1.4813490035769035) internal successors, (2899), 1957 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2899 transitions. [2024-11-27 23:27:05,046 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2899 transitions. Word has length 878 [2024-11-27 23:27:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:05,046 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 2899 transitions. [2024-11-27 23:27:05,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2899 transitions. [2024-11-27 23:27:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2024-11-27 23:27:05,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:05,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:05,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:27:05,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:27:05,258 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:05,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash 33413237, now seen corresponding path program 1 times [2024-11-27 23:27:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689625955] [2024-11-27 23:27:05,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:06,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689625955] [2024-11-27 23:27:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689625955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560474319] [2024-11-27 23:27:06,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:06,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:06,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:06,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:06,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:27:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:09,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 4060 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:27:09,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 23:27:10,222 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:10,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560474319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:10,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856340885] [2024-11-27 23:27:10,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:10,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:10,227 INFO L87 Difference]: Start difference. First operand 1958 states and 2899 transitions. Second operand has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,520 INFO L93 Difference]: Finished difference Result 4935 states and 7315 transitions. [2024-11-27 23:27:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:11,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 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 879 [2024-11-27 23:27:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,524 INFO L225 Difference]: With dead ends: 4935 [2024-11-27 23:27:11,524 INFO L226 Difference]: Without dead ends: 3211 [2024-11-27 23:27:11,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:11,527 INFO L435 NwaCegarLoop]: 1850 mSDtfsCounter, 3934 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3934 SdHoareTripleChecker+Valid, 7567 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3934 Valid, 7567 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:27:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2024-11-27 23:27:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1958. [2024-11-27 23:27:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 1.4803270311701584) internal successors, (2897), 1957 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2897 transitions. [2024-11-27 23:27:11,566 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2897 transitions. Word has length 879 [2024-11-27 23:27:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:11,566 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 2897 transitions. [2024-11-27 23:27:11,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2897 transitions. [2024-11-27 23:27:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2024-11-27 23:27:11,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:11,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:11,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:27:11,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 23:27:11,778 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:11,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash 119712687, now seen corresponding path program 1 times [2024-11-27 23:27:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871259027] [2024-11-27 23:27:11,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:13,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871259027] [2024-11-27 23:27:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871259027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153489389] [2024-11-27 23:27:13,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:13,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:13,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:13,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:27:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:27:15,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:27:16,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153489389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574103205] [2024-11-27 23:27:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:16,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:16,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:16,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:16,295 INFO L87 Difference]: Start difference. First operand 1958 states and 2897 transitions. Second operand has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:17,872 INFO L93 Difference]: Finished difference Result 4911 states and 7287 transitions. [2024-11-27 23:27:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:17,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 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 880 [2024-11-27 23:27:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:17,876 INFO L225 Difference]: With dead ends: 4911 [2024-11-27 23:27:17,876 INFO L226 Difference]: Without dead ends: 3231 [2024-11-27 23:27:17,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:17,878 INFO L435 NwaCegarLoop]: 1851 mSDtfsCounter, 2043 mSDsluCounter, 7346 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 9197 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:17,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 9197 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:27:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2024-11-27 23:27:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1972. [2024-11-27 23:27:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1971 states have (on average 1.4789446981227803) internal successors, (2915), 1971 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2915 transitions. [2024-11-27 23:27:17,902 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2915 transitions. Word has length 880 [2024-11-27 23:27:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:17,903 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2915 transitions. [2024-11-27 23:27:17,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2915 transitions. [2024-11-27 23:27:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2024-11-27 23:27:17,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:17,908 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:17,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:18,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:18,108 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:18,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash -435015634, now seen corresponding path program 1 times [2024-11-27 23:27:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:18,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573566071] [2024-11-27 23:27:18,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:19,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573566071] [2024-11-27 23:27:19,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573566071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:19,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822156683] [2024-11-27 23:27:19,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:19,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:19,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:19,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:27:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:22,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:27:22,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:22,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822156683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857484089] [2024-11-27 23:27:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:22,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:22,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:22,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:22,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:22,615 INFO L87 Difference]: Start difference. First operand 1972 states and 2915 transitions. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:23,639 INFO L93 Difference]: Finished difference Result 5886 states and 8699 transitions. [2024-11-27 23:27:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 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 881 [2024-11-27 23:27:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:23,643 INFO L225 Difference]: With dead ends: 5886 [2024-11-27 23:27:23,643 INFO L226 Difference]: Without dead ends: 4206 [2024-11-27 23:27:23,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:23,646 INFO L435 NwaCegarLoop]: 1966 mSDtfsCounter, 4026 mSDsluCounter, 6984 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 8950 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:23,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 8950 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:27:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2024-11-27 23:27:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 2548. [2024-11-27 23:27:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2547 states have (on average 1.4648606203376522) internal successors, (3731), 2547 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3731 transitions. [2024-11-27 23:27:23,689 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3731 transitions. Word has length 881 [2024-11-27 23:27:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,690 INFO L471 AbstractCegarLoop]: Abstraction has 2548 states and 3731 transitions. [2024-11-27 23:27:23,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3731 transitions. [2024-11-27 23:27:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-27 23:27:23,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,699 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:27:23,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:23,899 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1193933261, now seen corresponding path program 1 times [2024-11-27 23:27:23,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600963472] [2024-11-27 23:27:23,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600963472] [2024-11-27 23:27:25,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600963472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129428719] [2024-11-27 23:27:25,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:25,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:25,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:25,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:27:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:28,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:28,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:31,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129428719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765494295] [2024-11-27 23:27:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:31,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:31,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:31,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:31,610 INFO L87 Difference]: Start difference. First operand 2548 states and 3731 transitions. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:33,435 INFO L93 Difference]: Finished difference Result 5506 states and 8116 transitions. [2024-11-27 23:27:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:27:33,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 882 [2024-11-27 23:27:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:33,440 INFO L225 Difference]: With dead ends: 5506 [2024-11-27 23:27:33,440 INFO L226 Difference]: Without dead ends: 3384 [2024-11-27 23:27:33,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:33,443 INFO L435 NwaCegarLoop]: 1701 mSDtfsCounter, 3806 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 6781 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:33,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3806 Valid, 6781 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:27:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-11-27 23:27:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3382. [2024-11-27 23:27:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 1.4732327713694173) internal successors, (4981), 3381 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4981 transitions. [2024-11-27 23:27:33,502 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4981 transitions. Word has length 882 [2024-11-27 23:27:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:33,504 INFO L471 AbstractCegarLoop]: Abstraction has 3382 states and 4981 transitions. [2024-11-27 23:27:33,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4981 transitions. [2024-11-27 23:27:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-11-27 23:27:33,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:33,516 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:33,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:27:33,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:33,717 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:33,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1645860356, now seen corresponding path program 1 times [2024-11-27 23:27:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539138482] [2024-11-27 23:27:33,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:35,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539138482] [2024-11-27 23:27:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539138482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92301912] [2024-11-27 23:27:35,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:35,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:35,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:27:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:38,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:27:38,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 23:27:38,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92301912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:38,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:38,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004880714] [2024-11-27 23:27:38,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:38,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:38,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:38,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:38,379 INFO L87 Difference]: Start difference. First operand 3382 states and 4981 transitions. Second operand has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:39,963 INFO L93 Difference]: Finished difference Result 8553 states and 12630 transitions. [2024-11-27 23:27:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:39,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 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 882 [2024-11-27 23:27:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:39,968 INFO L225 Difference]: With dead ends: 8553 [2024-11-27 23:27:39,968 INFO L226 Difference]: Without dead ends: 5525 [2024-11-27 23:27:39,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:39,970 INFO L435 NwaCegarLoop]: 1850 mSDtfsCounter, 2030 mSDsluCounter, 7342 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 9192 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:39,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 9192 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:27:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2024-11-27 23:27:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 3424. [2024-11-27 23:27:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 1.4732690622261175) internal successors, (5043), 3423 states have internal predecessors, (5043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 5043 transitions. [2024-11-27 23:27:40,015 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 5043 transitions. Word has length 882 [2024-11-27 23:27:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:40,015 INFO L471 AbstractCegarLoop]: Abstraction has 3424 states and 5043 transitions. [2024-11-27 23:27:40,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 5043 transitions. [2024-11-27 23:27:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2024-11-27 23:27:40,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:40,022 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:40,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:27:40,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-27 23:27:40,223 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:40,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1320648105, now seen corresponding path program 1 times [2024-11-27 23:27:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327506948] [2024-11-27 23:27:40,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327506948] [2024-11-27 23:27:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327506948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532883353] [2024-11-27 23:27:41,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:41,825 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:41,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:27:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:27:44,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:45,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:45,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532883353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:45,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:45,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:27:45,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590055847] [2024-11-27 23:27:45,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:45,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:45,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:45,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:45,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:45,207 INFO L87 Difference]: Start difference. First operand 3424 states and 5043 transitions. Second operand has 6 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:46,162 INFO L93 Difference]: Finished difference Result 9373 states and 13808 transitions. [2024-11-27 23:27:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 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 883 [2024-11-27 23:27:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:46,167 INFO L225 Difference]: With dead ends: 9373 [2024-11-27 23:27:46,167 INFO L226 Difference]: Without dead ends: 6417 [2024-11-27 23:27:46,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:46,170 INFO L435 NwaCegarLoop]: 1991 mSDtfsCounter, 3117 mSDsluCounter, 6755 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 8746 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:46,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 8746 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:27:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2024-11-27 23:27:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 4666. [2024-11-27 23:27:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4666 states, 4665 states have (on average 1.4587352625937835) internal successors, (6805), 4665 states have internal predecessors, (6805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 6805 transitions. [2024-11-27 23:27:46,218 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 6805 transitions. Word has length 883 [2024-11-27 23:27:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:46,219 INFO L471 AbstractCegarLoop]: Abstraction has 4666 states and 6805 transitions. [2024-11-27 23:27:46,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 6805 transitions. [2024-11-27 23:27:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-11-27 23:27:46,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:46,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:46,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:27:46,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-27 23:27:46,428 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:46,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1150172044, now seen corresponding path program 1 times [2024-11-27 23:27:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65115082] [2024-11-27 23:27:46,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65115082] [2024-11-27 23:27:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65115082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860964129] [2024-11-27 23:27:48,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:48,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:48,064 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:48,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:27:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:50,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 4075 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-27 23:27:50,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:52,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860964129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:52,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:52,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2024-11-27 23:27:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663545921] [2024-11-27 23:27:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:52,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:27:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:52,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:27:52,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:27:52,268 INFO L87 Difference]: Start difference. First operand 4666 states and 6805 transitions. Second operand has 15 states, 15 states have (on average 58.93333333333333) internal successors, (884), 15 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:54,780 INFO L93 Difference]: Finished difference Result 9605 states and 14074 transitions. [2024-11-27 23:27:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:27:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 58.93333333333333) internal successors, (884), 15 states have internal predecessors, (884), 0 states have call successors, (0), 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 884 [2024-11-27 23:27:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:54,786 INFO L225 Difference]: With dead ends: 9605 [2024-11-27 23:27:54,786 INFO L226 Difference]: Without dead ends: 4844 [2024-11-27 23:27:54,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:27:54,791 INFO L435 NwaCegarLoop]: 2218 mSDtfsCounter, 806 mSDsluCounter, 16391 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 18609 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:54,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 18609 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:27:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2024-11-27 23:27:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4795. [2024-11-27 23:27:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4795 states, 4794 states have (on average 1.4593241551939924) internal successors, (6996), 4794 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4795 states to 4795 states and 6996 transitions. [2024-11-27 23:27:54,832 INFO L78 Accepts]: Start accepts. Automaton has 4795 states and 6996 transitions. Word has length 884 [2024-11-27 23:27:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:54,832 INFO L471 AbstractCegarLoop]: Abstraction has 4795 states and 6996 transitions. [2024-11-27 23:27:54,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 58.93333333333333) internal successors, (884), 15 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4795 states and 6996 transitions. [2024-11-27 23:27:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-11-27 23:27:54,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:54,841 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:54,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:27:55,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 23:27:55,041 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:55,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1287929513, now seen corresponding path program 1 times [2024-11-27 23:27:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045708326] [2024-11-27 23:27:55,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 71 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045708326] [2024-11-27 23:27:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045708326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27021648] [2024-11-27 23:27:56,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:56,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:56,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:28:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:00,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 4075 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:28:00,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:28:00,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27021648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:00,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:28:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524059769] [2024-11-27 23:28:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:00,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:00,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:00,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:28:00,959 INFO L87 Difference]: Start difference. First operand 4795 states and 6996 transitions. Second operand has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:02,198 INFO L93 Difference]: Finished difference Result 11412 states and 16742 transitions. [2024-11-27 23:28:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 0 states have call successors, (0), 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 884 [2024-11-27 23:28:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:02,206 INFO L225 Difference]: With dead ends: 11412 [2024-11-27 23:28:02,206 INFO L226 Difference]: Without dead ends: 7341 [2024-11-27 23:28:02,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:02,211 INFO L435 NwaCegarLoop]: 1852 mSDtfsCounter, 3945 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 7571 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:02,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3945 Valid, 7571 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:28:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2024-11-27 23:28:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 4851. [2024-11-27 23:28:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.457319587628866) internal successors, (7068), 4850 states have internal predecessors, (7068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 7068 transitions. [2024-11-27 23:28:02,276 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 7068 transitions. Word has length 884 [2024-11-27 23:28:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:02,276 INFO L471 AbstractCegarLoop]: Abstraction has 4851 states and 7068 transitions. [2024-11-27 23:28:02,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 7068 transitions. [2024-11-27 23:28:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2024-11-27 23:28:02,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:02,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:02,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:28:02,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 23:28:02,486 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:02,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 534118012, now seen corresponding path program 1 times [2024-11-27 23:28:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441205618] [2024-11-27 23:28:02,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441205618] [2024-11-27 23:28:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441205618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266638062] [2024-11-27 23:28:04,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:04,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:04,539 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:04,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:28:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:07,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 4078 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:28:07,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:08,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266638062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:28:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565908304] [2024-11-27 23:28:08,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:08,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:08,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:08,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:28:08,371 INFO L87 Difference]: Start difference. First operand 4851 states and 7068 transitions. Second operand has 6 states, 6 states have (on average 147.5) internal successors, (885), 6 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:09,826 INFO L93 Difference]: Finished difference Result 12431 states and 18142 transitions. [2024-11-27 23:28:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 147.5) internal successors, (885), 6 states have internal predecessors, (885), 0 states have call successors, (0), 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 885 [2024-11-27 23:28:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:09,833 INFO L225 Difference]: With dead ends: 12431 [2024-11-27 23:28:09,833 INFO L226 Difference]: Without dead ends: 8360 [2024-11-27 23:28:09,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:09,837 INFO L435 NwaCegarLoop]: 1703 mSDtfsCounter, 4295 mSDsluCounter, 5097 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 6800 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:09,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4295 Valid, 6800 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:28:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8360 states. [2024-11-27 23:28:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8360 to 7304. [2024-11-27 23:28:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 7303 states have (on average 1.4474873339723402) internal successors, (10571), 7303 states have internal predecessors, (10571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 10571 transitions. [2024-11-27 23:28:09,909 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 10571 transitions. Word has length 885 [2024-11-27 23:28:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:09,909 INFO L471 AbstractCegarLoop]: Abstraction has 7304 states and 10571 transitions. [2024-11-27 23:28:09,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.5) internal successors, (885), 6 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 10571 transitions. [2024-11-27 23:28:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-11-27 23:28:09,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:09,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:09,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:28:10,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 23:28:10,120 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:10,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2104140340, now seen corresponding path program 1 times [2024-11-27 23:28:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788944365] [2024-11-27 23:28:10,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788944365] [2024-11-27 23:28:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788944365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639688853] [2024-11-27 23:28:12,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:12,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:12,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:12,043 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:28:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:15,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 4081 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-11-27 23:28:15,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:17,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639688853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:17,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2024-11-27 23:28:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079831816] [2024-11-27 23:28:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:17,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:28:17,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:17,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:28:17,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:28:17,629 INFO L87 Difference]: Start difference. First operand 7304 states and 10571 transitions. Second operand has 14 states, 14 states have (on average 63.285714285714285) internal successors, (886), 14 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:22,391 INFO L93 Difference]: Finished difference Result 27232 states and 39288 transitions. [2024-11-27 23:28:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:28:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 63.285714285714285) internal successors, (886), 14 states have internal predecessors, (886), 0 states have call successors, (0), 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 886 [2024-11-27 23:28:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:22,411 INFO L225 Difference]: With dead ends: 27232 [2024-11-27 23:28:22,411 INFO L226 Difference]: Without dead ends: 21260 [2024-11-27 23:28:22,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:28:22,420 INFO L435 NwaCegarLoop]: 2279 mSDtfsCounter, 5687 mSDsluCounter, 15272 mSDsCounter, 0 mSdLazyCounter, 5723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5687 SdHoareTripleChecker+Valid, 17551 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:22,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5687 Valid, 17551 Invalid, 5724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5723 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 23:28:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21260 states. [2024-11-27 23:28:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21260 to 8535. [2024-11-27 23:28:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8535 states, 8534 states have (on average 1.4450433559878135) internal successors, (12332), 8534 states have internal predecessors, (12332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 12332 transitions. [2024-11-27 23:28:22,560 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 12332 transitions. Word has length 886 [2024-11-27 23:28:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:22,560 INFO L471 AbstractCegarLoop]: Abstraction has 8535 states and 12332 transitions. [2024-11-27 23:28:22,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 63.285714285714285) internal successors, (886), 14 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 12332 transitions. [2024-11-27 23:28:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-11-27 23:28:22,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:22,572 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:22,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:28:22,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 23:28:22,773 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:22,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 400535768, now seen corresponding path program 1 times [2024-11-27 23:28:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233473191] [2024-11-27 23:28:22,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233473191] [2024-11-27 23:28:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233473191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860553247] [2024-11-27 23:28:24,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:24,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:24,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:28:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:28,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 4081 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:28:28,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:30,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:30,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860553247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:30,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:30,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:28:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631317335] [2024-11-27 23:28:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:30,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:30,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:30,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:28:30,100 INFO L87 Difference]: Start difference. First operand 8535 states and 12332 transitions. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:31,899 INFO L93 Difference]: Finished difference Result 22404 states and 32445 transitions. [2024-11-27 23:28:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 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 886 [2024-11-27 23:28:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:31,922 INFO L225 Difference]: With dead ends: 22404 [2024-11-27 23:28:31,923 INFO L226 Difference]: Without dead ends: 15572 [2024-11-27 23:28:31,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:31,932 INFO L435 NwaCegarLoop]: 1701 mSDtfsCounter, 3511 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 6794 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:31,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 6794 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:28:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15572 states. [2024-11-27 23:28:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15572 to 14447. [2024-11-27 23:28:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14447 states, 14446 states have (on average 1.4370760071992248) internal successors, (20760), 14446 states have internal predecessors, (20760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14447 states to 14447 states and 20760 transitions. [2024-11-27 23:28:32,126 INFO L78 Accepts]: Start accepts. Automaton has 14447 states and 20760 transitions. Word has length 886 [2024-11-27 23:28:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:32,128 INFO L471 AbstractCegarLoop]: Abstraction has 14447 states and 20760 transitions. [2024-11-27 23:28:32,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 14447 states and 20760 transitions. [2024-11-27 23:28:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2024-11-27 23:28:32,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:32,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:32,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:28:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 23:28:32,352 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 468273262, now seen corresponding path program 1 times [2024-11-27 23:28:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490503198] [2024-11-27 23:28:32,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:34,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:34,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490503198] [2024-11-27 23:28:34,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490503198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:34,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343521635] [2024-11-27 23:28:34,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:34,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:34,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:34,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:34,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:28:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:37,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:28:37,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:40,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343521635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:28:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513310466] [2024-11-27 23:28:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:40,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:40,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:40,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:28:40,951 INFO L87 Difference]: Start difference. First operand 14447 states and 20760 transitions. Second operand has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:43,283 INFO L93 Difference]: Finished difference Result 27053 states and 39199 transitions. [2024-11-27 23:28:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:28:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 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 887 [2024-11-27 23:28:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:43,303 INFO L225 Difference]: With dead ends: 27053 [2024-11-27 23:28:43,303 INFO L226 Difference]: Without dead ends: 15569 [2024-11-27 23:28:43,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:43,317 INFO L435 NwaCegarLoop]: 1703 mSDtfsCounter, 2546 mSDsluCounter, 5087 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 6790 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:43,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 6790 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:28:43,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15569 states. [2024-11-27 23:28:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15569 to 15567. [2024-11-27 23:28:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15567 states, 15566 states have (on average 1.441475009636387) internal successors, (22438), 15566 states have internal predecessors, (22438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15567 states to 15567 states and 22438 transitions. [2024-11-27 23:28:43,548 INFO L78 Accepts]: Start accepts. Automaton has 15567 states and 22438 transitions. Word has length 887 [2024-11-27 23:28:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:43,549 INFO L471 AbstractCegarLoop]: Abstraction has 15567 states and 22438 transitions. [2024-11-27 23:28:43,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15567 states and 22438 transitions. [2024-11-27 23:28:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2024-11-27 23:28:43,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:43,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:43,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 23:28:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 23:28:43,778 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1490126961, now seen corresponding path program 1 times [2024-11-27 23:28:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369230383] [2024-11-27 23:28:43,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:46,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369230383] [2024-11-27 23:28:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369230383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677388781] [2024-11-27 23:28:46,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:46,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:46,050 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:46,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:28:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:49,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-27 23:28:49,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:56,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677388781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2024-11-27 23:28:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971772769] [2024-11-27 23:28:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:56,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:28:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:56,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:28:56,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:28:56,900 INFO L87 Difference]: Start difference. First operand 15567 states and 22438 transitions. Second operand has 21 states, 21 states have (on average 42.23809523809524) internal successors, (887), 21 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:08,855 INFO L93 Difference]: Finished difference Result 48195 states and 70240 transitions. [2024-11-27 23:29:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:29:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 42.23809523809524) internal successors, (887), 21 states have internal predecessors, (887), 0 states have call successors, (0), 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 887 [2024-11-27 23:29:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:08,892 INFO L225 Difference]: With dead ends: 48195 [2024-11-27 23:29:08,893 INFO L226 Difference]: Without dead ends: 35591 [2024-11-27 23:29:08,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:29:08,914 INFO L435 NwaCegarLoop]: 4286 mSDtfsCounter, 9050 mSDsluCounter, 47768 mSDsCounter, 0 mSdLazyCounter, 14394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9050 SdHoareTripleChecker+Valid, 52054 SdHoareTripleChecker+Invalid, 14400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:08,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9050 Valid, 52054 Invalid, 14400 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6 Valid, 14394 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-27 23:29:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35591 states. [2024-11-27 23:29:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35591 to 19580. [2024-11-27 23:29:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19580 states, 19579 states have (on average 1.448439654732111) internal successors, (28359), 19579 states have internal predecessors, (28359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19580 states to 19580 states and 28359 transitions. [2024-11-27 23:29:09,213 INFO L78 Accepts]: Start accepts. Automaton has 19580 states and 28359 transitions. Word has length 887 [2024-11-27 23:29:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:09,214 INFO L471 AbstractCegarLoop]: Abstraction has 19580 states and 28359 transitions. [2024-11-27 23:29:09,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 42.23809523809524) internal successors, (887), 21 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 19580 states and 28359 transitions. [2024-11-27 23:29:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2024-11-27 23:29:09,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:09,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:09,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:29:09,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-27 23:29:09,438 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:09,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1711586664, now seen corresponding path program 1 times [2024-11-27 23:29:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314573896] [2024-11-27 23:29:09,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314573896] [2024-11-27 23:29:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314573896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097728874] [2024-11-27 23:29:11,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:11,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:11,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:11,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:11,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:29:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:15,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 4087 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:29:15,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:19,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097728874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:19,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:29:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:29:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269620867] [2024-11-27 23:29:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:19,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:29:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:19,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:29:19,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:29:19,354 INFO L87 Difference]: Start difference. First operand 19580 states and 28359 transitions. Second operand has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:23,571 INFO L93 Difference]: Finished difference Result 44075 states and 64132 transitions. [2024-11-27 23:29:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:29:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 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 888 [2024-11-27 23:29:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:23,602 INFO L225 Difference]: With dead ends: 44075 [2024-11-27 23:29:23,603 INFO L226 Difference]: Without dead ends: 27742 [2024-11-27 23:29:23,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:29:23,626 INFO L435 NwaCegarLoop]: 2979 mSDtfsCounter, 3246 mSDsluCounter, 13593 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 4395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:23,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3246 Valid, 16572 Invalid, 4395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 4392 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:29:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27742 states. [2024-11-27 23:29:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27742 to 26852. [2024-11-27 23:29:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26852 states, 26851 states have (on average 1.4461658783657965) internal successors, (38831), 26851 states have internal predecessors, (38831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26852 states to 26852 states and 38831 transitions. [2024-11-27 23:29:23,958 INFO L78 Accepts]: Start accepts. Automaton has 26852 states and 38831 transitions. Word has length 888 [2024-11-27 23:29:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:23,959 INFO L471 AbstractCegarLoop]: Abstraction has 26852 states and 38831 transitions. [2024-11-27 23:29:23,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 26852 states and 38831 transitions. [2024-11-27 23:29:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2024-11-27 23:29:24,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:24,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:24,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:29:24,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-27 23:29:24,330 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:24,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1429964933, now seen corresponding path program 1 times [2024-11-27 23:29:24,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:24,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928999023] [2024-11-27 23:29:24,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:26,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928999023] [2024-11-27 23:29:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928999023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828949342] [2024-11-27 23:29:26,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:26,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:26,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:26,496 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:26,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:29:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:32,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 4087 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:29:32,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:33,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828949342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:33,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:29:33,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:29:33,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443116825] [2024-11-27 23:29:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:33,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:33,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:33,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:29:33,693 INFO L87 Difference]: Start difference. First operand 26852 states and 38831 transitions. Second operand has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:36,027 INFO L93 Difference]: Finished difference Result 74544 states and 108205 transitions. [2024-11-27 23:29:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 888 [2024-11-27 23:29:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:36,073 INFO L225 Difference]: With dead ends: 74544 [2024-11-27 23:29:36,073 INFO L226 Difference]: Without dead ends: 52199 [2024-11-27 23:29:36,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:29:36,095 INFO L435 NwaCegarLoop]: 1701 mSDtfsCounter, 4822 mSDsluCounter, 5091 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4822 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:36,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4822 Valid, 6792 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:29:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52199 states. [2024-11-27 23:29:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52199 to 46119. [2024-11-27 23:29:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46119 states, 46118 states have (on average 1.4380068519883777) internal successors, (66318), 46118 states have internal predecessors, (66318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46119 states to 46119 states and 66318 transitions. [2024-11-27 23:29:36,679 INFO L78 Accepts]: Start accepts. Automaton has 46119 states and 66318 transitions. Word has length 888 [2024-11-27 23:29:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:36,679 INFO L471 AbstractCegarLoop]: Abstraction has 46119 states and 66318 transitions. [2024-11-27 23:29:36,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 46119 states and 66318 transitions. [2024-11-27 23:29:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-27 23:29:36,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:36,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:36,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:36,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 23:29:36,915 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:36,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1683562351, now seen corresponding path program 1 times [2024-11-27 23:29:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95128921] [2024-11-27 23:29:36,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:39,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95128921] [2024-11-27 23:29:39,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95128921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196176337] [2024-11-27 23:29:39,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:39,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:39,743 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:29:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:43,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 4090 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:29:43,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:46,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196176337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:46,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:29:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:29:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824912514] [2024-11-27 23:29:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:46,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:46,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:46,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:29:46,486 INFO L87 Difference]: Start difference. First operand 46119 states and 66318 transitions. Second operand has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:49,262 INFO L93 Difference]: Finished difference Result 89721 states and 130255 transitions. [2024-11-27 23:29:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:29:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 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 889 [2024-11-27 23:29:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:49,300 INFO L225 Difference]: With dead ends: 89721 [2024-11-27 23:29:49,300 INFO L226 Difference]: Without dead ends: 52187 [2024-11-27 23:29:49,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:29:49,320 INFO L435 NwaCegarLoop]: 1703 mSDtfsCounter, 2593 mSDsluCounter, 5087 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 6790 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:49,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2593 Valid, 6790 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:29:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52187 states. [2024-11-27 23:29:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52187 to 52183. [2024-11-27 23:29:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52183 states, 52182 states have (on average 1.4449427005480817) internal successors, (75400), 52182 states have internal predecessors, (75400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52183 states to 52183 states and 75400 transitions. [2024-11-27 23:29:50,130 INFO L78 Accepts]: Start accepts. Automaton has 52183 states and 75400 transitions. Word has length 889 [2024-11-27 23:29:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:50,131 INFO L471 AbstractCegarLoop]: Abstraction has 52183 states and 75400 transitions. [2024-11-27 23:29:50,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 52183 states and 75400 transitions. [2024-11-27 23:29:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-27 23:29:50,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:50,206 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:50,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:50,407 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:50,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1825291337, now seen corresponding path program 1 times [2024-11-27 23:29:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503111173] [2024-11-27 23:29:50,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503111173] [2024-11-27 23:29:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503111173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298150955] [2024-11-27 23:29:53,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:53,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:53,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:53,803 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:53,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:29:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:59,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 4090 conjuncts, 307 conjuncts are in the unsatisfiable core [2024-11-27 23:29:59,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:02,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:30:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298150955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:30:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2024-11-27 23:30:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928968254] [2024-11-27 23:30:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:02,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:30:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:02,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:30:02,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:30:02,288 INFO L87 Difference]: Start difference. First operand 52183 states and 75400 transitions. Second operand has 15 states, 15 states have (on average 59.266666666666666) internal successors, (889), 15 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:13,600 INFO L93 Difference]: Finished difference Result 147942 states and 215685 transitions. [2024-11-27 23:30:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:30:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 59.266666666666666) internal successors, (889), 15 states have internal predecessors, (889), 0 states have call successors, (0), 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 889 [2024-11-27 23:30:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:13,702 INFO L225 Difference]: With dead ends: 147942 [2024-11-27 23:30:13,703 INFO L226 Difference]: Without dead ends: 104344 [2024-11-27 23:30:13,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:30:13,735 INFO L435 NwaCegarLoop]: 5185 mSDtfsCounter, 9992 mSDsluCounter, 34156 mSDsCounter, 0 mSdLazyCounter, 10528 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9992 SdHoareTripleChecker+Valid, 39341 SdHoareTripleChecker+Invalid, 10529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:13,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9992 Valid, 39341 Invalid, 10529 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 10528 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-27 23:30:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104344 states. [2024-11-27 23:30:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104344 to 53093. [2024-11-27 23:30:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53093 states, 53092 states have (on average 1.444247720937241) internal successors, (76678), 53092 states have internal predecessors, (76678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53093 states to 53093 states and 76678 transitions. [2024-11-27 23:30:14,796 INFO L78 Accepts]: Start accepts. Automaton has 53093 states and 76678 transitions. Word has length 889 [2024-11-27 23:30:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:14,796 INFO L471 AbstractCegarLoop]: Abstraction has 53093 states and 76678 transitions. [2024-11-27 23:30:14,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.266666666666666) internal successors, (889), 15 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:14,796 INFO L276 IsEmpty]: Start isEmpty. Operand 53093 states and 76678 transitions. [2024-11-27 23:30:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-27 23:30:14,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:14,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:14,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:30:15,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:15,062 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:15,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -25298890, now seen corresponding path program 1 times [2024-11-27 23:30:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504298042] [2024-11-27 23:30:15,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504298042] [2024-11-27 23:30:17,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504298042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719712681] [2024-11-27 23:30:17,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:17,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:17,993 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:30:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:22,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 4090 conjuncts, 173 conjuncts are in the unsatisfiable core [2024-11-27 23:30:22,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:24,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:30:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719712681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:24,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:30:24,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2024-11-27 23:30:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157693210] [2024-11-27 23:30:24,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:24,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:30:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:24,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:30:24,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:30:24,713 INFO L87 Difference]: Start difference. First operand 53093 states and 76678 transitions. Second operand has 14 states, 14 states have (on average 63.5) internal successors, (889), 14 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:34,224 INFO L93 Difference]: Finished difference Result 138480 states and 201232 transitions. [2024-11-27 23:30:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:30:34,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 63.5) internal successors, (889), 14 states have internal predecessors, (889), 0 states have call successors, (0), 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 889 [2024-11-27 23:30:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:34,313 INFO L225 Difference]: With dead ends: 138480 [2024-11-27 23:30:34,313 INFO L226 Difference]: Without dead ends: 92784 [2024-11-27 23:30:34,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:30:34,350 INFO L435 NwaCegarLoop]: 4042 mSDtfsCounter, 4839 mSDsluCounter, 33755 mSDsCounter, 0 mSdLazyCounter, 9679 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 37797 SdHoareTripleChecker+Invalid, 9682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:34,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 37797 Invalid, 9682 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3 Valid, 9679 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-27 23:30:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92784 states. [2024-11-27 23:30:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92784 to 53215. [2024-11-27 23:30:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53215 states, 53214 states have (on average 1.442101702559477) internal successors, (76740), 53214 states have internal predecessors, (76740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53215 states to 53215 states and 76740 transitions. [2024-11-27 23:30:35,502 INFO L78 Accepts]: Start accepts. Automaton has 53215 states and 76740 transitions. Word has length 889 [2024-11-27 23:30:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:35,503 INFO L471 AbstractCegarLoop]: Abstraction has 53215 states and 76740 transitions. [2024-11-27 23:30:35,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 63.5) internal successors, (889), 14 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 53215 states and 76740 transitions. [2024-11-27 23:30:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-27 23:30:35,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:35,576 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:35,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-27 23:30:35,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 23:30:35,777 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:35,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash -266636947, now seen corresponding path program 1 times [2024-11-27 23:30:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301161223] [2024-11-27 23:30:35,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:38,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301161223] [2024-11-27 23:30:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301161223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770597061] [2024-11-27 23:30:38,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:38,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:38,963 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:38,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:30:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:44,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 4088 conjuncts, 275 conjuncts are in the unsatisfiable core [2024-11-27 23:30:44,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:48,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:30:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770597061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:30:48,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2024-11-27 23:30:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709643802] [2024-11-27 23:30:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:48,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:30:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:48,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:30:48,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:30:48,147 INFO L87 Difference]: Start difference. First operand 53215 states and 76740 transitions. Second operand has 18 states, 18 states have (on average 49.388888888888886) internal successors, (889), 18 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:57,762 INFO L93 Difference]: Finished difference Result 170367 states and 248613 transitions. [2024-11-27 23:30:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:30:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 49.388888888888886) internal successors, (889), 18 states have internal predecessors, (889), 0 states have call successors, (0), 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 889 [2024-11-27 23:30:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:58,181 INFO L225 Difference]: With dead ends: 170367 [2024-11-27 23:30:58,182 INFO L226 Difference]: Without dead ends: 126111 [2024-11-27 23:30:58,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:30:58,208 INFO L435 NwaCegarLoop]: 3959 mSDtfsCounter, 9170 mSDsluCounter, 28367 mSDsCounter, 0 mSdLazyCounter, 9013 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9170 SdHoareTripleChecker+Valid, 32326 SdHoareTripleChecker+Invalid, 9017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:58,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9170 Valid, 32326 Invalid, 9017 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 9013 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-27 23:30:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126111 states. [2024-11-27 23:30:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126111 to 58442. [2024-11-27 23:30:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58442 states, 58441 states have (on average 1.4405810988860561) internal successors, (84189), 58441 states have internal predecessors, (84189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58442 states to 58442 states and 84189 transitions. [2024-11-27 23:30:59,555 INFO L78 Accepts]: Start accepts. Automaton has 58442 states and 84189 transitions. Word has length 889 [2024-11-27 23:30:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:59,556 INFO L471 AbstractCegarLoop]: Abstraction has 58442 states and 84189 transitions. [2024-11-27 23:30:59,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 49.388888888888886) internal successors, (889), 18 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 58442 states and 84189 transitions. [2024-11-27 23:30:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-27 23:30:59,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:59,624 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:59,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:30:59,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-27 23:30:59,825 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:59,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1673127018, now seen corresponding path program 1 times [2024-11-27 23:30:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:59,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520227442] [2024-11-27 23:30:59,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:59,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520227442] [2024-11-27 23:31:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520227442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699521444] [2024-11-27 23:31:02,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,773 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:31:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:08,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 4093 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:31:08,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:09,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699521444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:09,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:31:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165929130] [2024-11-27 23:31:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:09,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:31:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:09,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:31:09,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:31:09,629 INFO L87 Difference]: Start difference. First operand 58442 states and 84189 transitions. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:12,197 INFO L93 Difference]: Finished difference Result 157435 states and 228006 transitions. [2024-11-27 23:31:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:31:12,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 890 [2024-11-27 23:31:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:12,330 INFO L225 Difference]: With dead ends: 157435 [2024-11-27 23:31:12,330 INFO L226 Difference]: Without dead ends: 108896 [2024-11-27 23:31:12,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:12,383 INFO L435 NwaCegarLoop]: 1699 mSDtfsCounter, 4767 mSDsluCounter, 5086 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 6785 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:12,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4767 Valid, 6785 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:31:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108896 states. [2024-11-27 23:31:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108896 to 95454. [2024-11-27 23:31:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95454 states, 95453 states have (on average 1.432715577299823) internal successors, (136757), 95453 states have internal predecessors, (136757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95454 states to 95454 states and 136757 transitions. [2024-11-27 23:31:14,344 INFO L78 Accepts]: Start accepts. Automaton has 95454 states and 136757 transitions. Word has length 890 [2024-11-27 23:31:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:14,344 INFO L471 AbstractCegarLoop]: Abstraction has 95454 states and 136757 transitions. [2024-11-27 23:31:14,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:14,345 INFO L276 IsEmpty]: Start isEmpty. Operand 95454 states and 136757 transitions. [2024-11-27 23:31:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-27 23:31:14,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:14,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:14,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:31:14,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-27 23:31:14,671 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:14,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1868022782, now seen corresponding path program 1 times [2024-11-27 23:31:14,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:14,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620950772] [2024-11-27 23:31:14,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:14,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620950772] [2024-11-27 23:31:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620950772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:18,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353199123] [2024-11-27 23:31:18,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:18,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:18,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:18,189 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:18,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:31:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:24,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 287 conjuncts are in the unsatisfiable core [2024-11-27 23:31:24,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:26,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353199123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:26,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:26,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2024-11-27 23:31:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001349455] [2024-11-27 23:31:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:26,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:31:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:26,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:31:26,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:31:26,363 INFO L87 Difference]: Start difference. First operand 95454 states and 136757 transitions. Second operand has 16 states, 16 states have (on average 55.625) internal successors, (890), 16 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:40,426 INFO L93 Difference]: Finished difference Result 351229 states and 507667 transitions. [2024-11-27 23:31:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:31:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 55.625) internal successors, (890), 16 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 890 [2024-11-27 23:31:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:40,754 INFO L225 Difference]: With dead ends: 351229 [2024-11-27 23:31:40,754 INFO L226 Difference]: Without dead ends: 273980 [2024-11-27 23:31:40,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:31:40,806 INFO L435 NwaCegarLoop]: 5096 mSDtfsCounter, 13137 mSDsluCounter, 41843 mSDsCounter, 0 mSdLazyCounter, 13286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13137 SdHoareTripleChecker+Valid, 46939 SdHoareTripleChecker+Invalid, 13287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:40,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13137 Valid, 46939 Invalid, 13287 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 13286 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-27 23:31:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273980 states. [2024-11-27 23:31:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273980 to 97257. [2024-11-27 23:31:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97257 states, 97256 states have (on average 1.4330118450275562) internal successors, (139369), 97256 states have internal predecessors, (139369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97257 states to 97257 states and 139369 transitions. [2024-11-27 23:31:43,534 INFO L78 Accepts]: Start accepts. Automaton has 97257 states and 139369 transitions. Word has length 890 [2024-11-27 23:31:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:43,534 INFO L471 AbstractCegarLoop]: Abstraction has 97257 states and 139369 transitions. [2024-11-27 23:31:43,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 55.625) internal successors, (890), 16 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 97257 states and 139369 transitions. [2024-11-27 23:31:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2024-11-27 23:31:43,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:43,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:43,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:31:43,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 23:31:43,858 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:43,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1610268385, now seen corresponding path program 1 times [2024-11-27 23:31:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:43,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709496558] [2024-11-27 23:31:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709496558] [2024-11-27 23:31:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709496558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689357176] [2024-11-27 23:31:47,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:47,056 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:47,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75371c9c-aff0-4c07-937f-53be14ca69a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:31:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:52,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:31:52,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:54,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689357176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:31:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401786466] [2024-11-27 23:31:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:54,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:31:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:54,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:31:54,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:31:54,210 INFO L87 Difference]: Start difference. First operand 97257 states and 139369 transitions. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)