./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/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 f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:26:47,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:26:47,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:26:48,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:26:48,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:26:48,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:26:48,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:26:48,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:26:48,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:26:48,049 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:26:48,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:26:48,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:26:48,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:26:48,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:26:48,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:26:48,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:26:48,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:26:48,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:26:48,051 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:48,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:48,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:48,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:26:48,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:26:48,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:26:48,053 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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/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 -> f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 [2024-11-28 04:26:48,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:26:48,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:26:48,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:26:48,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:26:48,355 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:26:48,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-28 04:26:51,286 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/data/51461be08/0ff2c41930d34dd8b9a3629e401b14a7/FLAG6e3ee052d [2024-11-28 04:26:51,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:26:51,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-28 04:26:51,712 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/data/51461be08/0ff2c41930d34dd8b9a3629e401b14a7/FLAG6e3ee052d [2024-11-28 04:26:51,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/data/51461be08/0ff2c41930d34dd8b9a3629e401b14a7 [2024-11-28 04:26:51,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:26:51,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:26:51,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:51,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:26:51,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:26:51,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:51" (1/1) ... [2024-11-28 04:26:51,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2755fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:51, skipping insertion in model container [2024-11-28 04:26:51,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:51" (1/1) ... [2024-11-28 04:26:51,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:26:52,025 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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-28 04:26:52,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:52,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:26:52,195 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_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-28 04:26:52,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:52,282 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:26:52,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52 WrapperNode [2024-11-28 04:26:52,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:52,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:52,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:26:52,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:26:52,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,444 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 516 [2024-11-28 04:26:52,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:52,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:26:52,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:26:52,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:26:52,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,537 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:26:52,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:26:52,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:26:52,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:26:52,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:26:52,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (1/1) ... [2024-11-28 04:26:52,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:52,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:26:52,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:26:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:26:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:26:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:26:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:26:52,907 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:26:52,910 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:54,230 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-11-28 04:26:54,230 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:54,253 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:54,254 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:26:54,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:54 BoogieIcfgContainer [2024-11-28 04:26:54,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:54,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:54,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:54,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:54,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:26:51" (1/3) ... [2024-11-28 04:26:54,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff70ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:54, skipping insertion in model container [2024-11-28 04:26:54,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:52" (2/3) ... [2024-11-28 04:26:54,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff70ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:54, skipping insertion in model container [2024-11-28 04:26:54,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:54" (3/3) ... [2024-11-28 04:26:54,271 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-28 04:26:54,291 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:54,293 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c that has 1 procedures, 130 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:26:54,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:54,404 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;@7f05a6f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:54,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:26:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:26:54,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:54,425 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] [2024-11-28 04:26:54,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:54,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1161288925, now seen corresponding path program 1 times [2024-11-28 04:26:54,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439361187] [2024-11-28 04:26:54,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439361187] [2024-11-28 04:26:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439361187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:26:55,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128505074] [2024-11-28 04:26:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:55,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:55,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:55,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:55,668 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 0 states have call successors, (0), 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 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:55,776 INFO L93 Difference]: Finished difference Result 233 states and 345 transitions. [2024-11-28 04:26:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-28 04:26:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:55,795 INFO L225 Difference]: With dead ends: 233 [2024-11-28 04:26:55,798 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 04:26:55,802 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 [2024-11-28 04:26:55,808 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:55,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 04:26:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-28 04:26:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4765625) internal successors, (189), 128 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2024-11-28 04:26:55,887 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 45 [2024-11-28 04:26:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:55,888 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2024-11-28 04:26:55,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2024-11-28 04:26:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:26:55,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:55,891 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] [2024-11-28 04:26:55,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:26:55,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:55,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1638522894, now seen corresponding path program 1 times [2024-11-28 04:26:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:55,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640287912] [2024-11-28 04:26:55,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640287912] [2024-11-28 04:26:56,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640287912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:56,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:56,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:26:56,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85285969] [2024-11-28 04:26:56,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:56,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:56,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:56,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:56,326 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:56,406 INFO L93 Difference]: Finished difference Result 234 states and 343 transitions. [2024-11-28 04:26:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:56,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-28 04:26:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:56,411 INFO L225 Difference]: With dead ends: 234 [2024-11-28 04:26:56,411 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 04:26:56,412 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 [2024-11-28 04:26:56,413 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 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 [2024-11-28 04:26:56,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 04:26:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-28 04:26:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 130 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2024-11-28 04:26:56,434 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 46 [2024-11-28 04:26:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:56,438 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2024-11-28 04:26:56,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2024-11-28 04:26:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:26:56,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:56,440 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] [2024-11-28 04:26:56,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:26:56,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:56,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash -352567844, now seen corresponding path program 1 times [2024-11-28 04:26:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:56,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645720633] [2024-11-28 04:26:56,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:57,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645720633] [2024-11-28 04:26:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645720633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:57,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:57,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:26:57,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143589012] [2024-11-28 04:26:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:57,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:57,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:57,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:57,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:57,314 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:57,435 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2024-11-28 04:26:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 04:26:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:57,440 INFO L225 Difference]: With dead ends: 241 [2024-11-28 04:26:57,444 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:26:57,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:57,445 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:57,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 889 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:26:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-28 04:26:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4592592592592593) internal successors, (197), 135 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 197 transitions. [2024-11-28 04:26:57,459 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 197 transitions. Word has length 47 [2024-11-28 04:26:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:57,460 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 197 transitions. [2024-11-28 04:26:57,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,461 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 197 transitions. [2024-11-28 04:26:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:26:57,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:57,463 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] [2024-11-28 04:26:57,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:26:57,465 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:57,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1430781511, now seen corresponding path program 1 times [2024-11-28 04:26:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356083718] [2024-11-28 04:26:57,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:57,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:57,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356083718] [2024-11-28 04:26:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356083718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:57,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:26:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672461792] [2024-11-28 04:26:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:57,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:57,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:57,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:57,820 INFO L87 Difference]: Start difference. First operand 136 states and 197 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:57,920 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2024-11-28 04:26:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:26:57,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-28 04:26:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:57,922 INFO L225 Difference]: With dead ends: 257 [2024-11-28 04:26:57,922 INFO L226 Difference]: Without dead ends: 147 [2024-11-28 04:26:57,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:57,924 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:57,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-28 04:26:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-28 04:26:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4452054794520548) internal successors, (211), 146 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2024-11-28 04:26:57,936 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 48 [2024-11-28 04:26:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:57,937 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2024-11-28 04:26:57,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2024-11-28 04:26:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:26:57,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:57,940 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] [2024-11-28 04:26:57,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:26:57,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:57,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1285611392, now seen corresponding path program 1 times [2024-11-28 04:26:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146408613] [2024-11-28 04:26:57,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146408613] [2024-11-28 04:26:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146408613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:58,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238444501] [2024-11-28 04:26:58,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:58,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:58,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:58,197 INFO L87 Difference]: Start difference. First operand 147 states and 211 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:58,327 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2024-11-28 04:26:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:26:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-28 04:26:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:58,331 INFO L225 Difference]: With dead ends: 363 [2024-11-28 04:26:58,333 INFO L226 Difference]: Without dead ends: 242 [2024-11-28 04:26:58,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:58,338 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 391 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:58,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-28 04:26:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 194. [2024-11-28 04:26:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2024-11-28 04:26:58,353 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 48 [2024-11-28 04:26:58,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:58,353 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2024-11-28 04:26:58,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2024-11-28 04:26:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:26:58,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:58,355 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] [2024-11-28 04:26:58,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:26:58,356 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:58,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1420291833, now seen corresponding path program 1 times [2024-11-28 04:26:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100258163] [2024-11-28 04:26:58,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100258163] [2024-11-28 04:26:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100258163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:58,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031115806] [2024-11-28 04:26:58,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:58,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:58,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:58,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:58,610 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:58,742 INFO L93 Difference]: Finished difference Result 357 states and 507 transitions. [2024-11-28 04:26:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:26:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 04:26:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:58,748 INFO L225 Difference]: With dead ends: 357 [2024-11-28 04:26:58,748 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 04:26:58,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:58,749 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 359 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:58,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 04:26:58,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 188. [2024-11-28 04:26:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4385026737967914) internal successors, (269), 187 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 269 transitions. [2024-11-28 04:26:58,774 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 269 transitions. Word has length 49 [2024-11-28 04:26:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:58,774 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 269 transitions. [2024-11-28 04:26:58,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 269 transitions. [2024-11-28 04:26:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:26:58,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:58,780 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] [2024-11-28 04:26:58,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:26:58,780 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:58,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash -559412370, now seen corresponding path program 1 times [2024-11-28 04:26:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690791378] [2024-11-28 04:26:58,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690791378] [2024-11-28 04:26:59,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690791378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:59,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:59,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:26:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153181059] [2024-11-28 04:26:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:59,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:59,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:59,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:59,145 INFO L87 Difference]: Start difference. First operand 188 states and 269 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:59,255 INFO L93 Difference]: Finished difference Result 337 states and 480 transitions. [2024-11-28 04:26:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:26:59,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 04:26:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:59,258 INFO L225 Difference]: With dead ends: 337 [2024-11-28 04:26:59,260 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 04:26:59,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:59,262 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:59,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 04:26:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-28 04:26:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.4195121951219511) internal successors, (291), 205 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 291 transitions. [2024-11-28 04:26:59,272 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 291 transitions. Word has length 49 [2024-11-28 04:26:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:59,273 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 291 transitions. [2024-11-28 04:26:59,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 291 transitions. [2024-11-28 04:26:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:26:59,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:59,274 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] [2024-11-28 04:26:59,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:26:59,275 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:59,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1444590169, now seen corresponding path program 1 times [2024-11-28 04:26:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444223816] [2024-11-28 04:26:59,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444223816] [2024-11-28 04:26:59,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444223816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:59,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:26:59,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443016792] [2024-11-28 04:26:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:59,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:59,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:59,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:59,535 INFO L87 Difference]: Start difference. First operand 206 states and 291 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:59,639 INFO L93 Difference]: Finished difference Result 385 states and 543 transitions. [2024-11-28 04:26:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:26:59,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 04:26:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:59,643 INFO L225 Difference]: With dead ends: 385 [2024-11-28 04:26:59,643 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 04:26:59,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:59,646 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:59,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 04:26:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-28 04:26:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4052863436123348) internal successors, (319), 227 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2024-11-28 04:26:59,658 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 50 [2024-11-28 04:26:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:59,658 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2024-11-28 04:26:59,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2024-11-28 04:26:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:26:59,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:59,662 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] [2024-11-28 04:26:59,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:26:59,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:59,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash -662315090, now seen corresponding path program 1 times [2024-11-28 04:26:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238468618] [2024-11-28 04:26:59,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238468618] [2024-11-28 04:26:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238468618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:59,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242792566] [2024-11-28 04:26:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:59,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:59,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:59,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:59,883 INFO L87 Difference]: Start difference. First operand 228 states and 319 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:00,007 INFO L93 Difference]: Finished difference Result 428 states and 595 transitions. [2024-11-28 04:27:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:27:00,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 04:27:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:00,010 INFO L225 Difference]: With dead ends: 428 [2024-11-28 04:27:00,010 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 04:27:00,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:00,011 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 375 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:00,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:27:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 04:27:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2024-11-28 04:27:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3963133640552996) internal successors, (303), 217 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 303 transitions. [2024-11-28 04:27:00,029 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 303 transitions. Word has length 50 [2024-11-28 04:27:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:00,029 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 303 transitions. [2024-11-28 04:27:00,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 303 transitions. [2024-11-28 04:27:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:27:00,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:00,031 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] [2024-11-28 04:27:00,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:27:00,031 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:00,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash -75276800, now seen corresponding path program 1 times [2024-11-28 04:27:00,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:00,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369664511] [2024-11-28 04:27:00,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:00,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369664511] [2024-11-28 04:27:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369664511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:00,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:27:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318281246] [2024-11-28 04:27:00,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:00,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:27:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:00,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:27:00,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:00,328 INFO L87 Difference]: Start difference. First operand 218 states and 303 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:00,426 INFO L93 Difference]: Finished difference Result 417 states and 579 transitions. [2024-11-28 04:27:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:27:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 04:27:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:00,429 INFO L225 Difference]: With dead ends: 417 [2024-11-28 04:27:00,429 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 04:27:00,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:00,431 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:00,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:27:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 04:27:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-28 04:27:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3849372384937237) internal successors, (331), 239 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 331 transitions. [2024-11-28 04:27:00,451 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 331 transitions. Word has length 51 [2024-11-28 04:27:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:00,452 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 331 transitions. [2024-11-28 04:27:00,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 331 transitions. [2024-11-28 04:27:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:27:00,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:00,453 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] [2024-11-28 04:27:00,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:27:00,453 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:00,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash 543160409, now seen corresponding path program 1 times [2024-11-28 04:27:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747733748] [2024-11-28 04:27:00,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:00,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747733748] [2024-11-28 04:27:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747733748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:00,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:00,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:27:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825937084] [2024-11-28 04:27:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:00,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:27:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:00,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:27:00,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:27:00,671 INFO L87 Difference]: Start difference. First operand 240 states and 331 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:00,768 INFO L93 Difference]: Finished difference Result 444 states and 607 transitions. [2024-11-28 04:27:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:27:00,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 04:27:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:00,770 INFO L225 Difference]: With dead ends: 444 [2024-11-28 04:27:00,771 INFO L226 Difference]: Without dead ends: 262 [2024-11-28 04:27:00,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:00,772 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 319 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:00,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:27:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-28 04:27:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2024-11-28 04:27:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.3755458515283843) internal successors, (315), 229 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2024-11-28 04:27:00,789 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 51 [2024-11-28 04:27:00,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:00,789 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2024-11-28 04:27:00,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2024-11-28 04:27:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:27:00,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:00,791 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] [2024-11-28 04:27:00,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:27:00,791 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:00,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash -131357547, now seen corresponding path program 1 times [2024-11-28 04:27:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:00,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802478378] [2024-11-28 04:27:00,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802478378] [2024-11-28 04:27:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802478378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:27:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997266478] [2024-11-28 04:27:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:00,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:27:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:00,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:27:00,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:27:00,956 INFO L87 Difference]: Start difference. First operand 230 states and 315 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:00,999 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2024-11-28 04:27:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:27:01,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-28 04:27:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:01,006 INFO L225 Difference]: With dead ends: 430 [2024-11-28 04:27:01,007 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 04:27:01,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:27:01,008 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 4 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 725 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 [2024-11-28 04:27:01,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 725 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:27:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 04:27:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-28 04:27:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.3673469387755102) internal successors, (335), 245 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-11-28 04:27:01,024 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 52 [2024-11-28 04:27:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:01,024 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-11-28 04:27:01,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-11-28 04:27:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:27:01,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:01,029 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] [2024-11-28 04:27:01,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:27:01,029 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:01,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -553739812, now seen corresponding path program 1 times [2024-11-28 04:27:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986490548] [2024-11-28 04:27:01,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:01,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986490548] [2024-11-28 04:27:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986490548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:27:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626171717] [2024-11-28 04:27:01,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:01,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:27:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:01,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:27:01,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:27:01,196 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:01,290 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2024-11-28 04:27:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:27:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-28 04:27:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:01,292 INFO L225 Difference]: With dead ends: 467 [2024-11-28 04:27:01,293 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 04:27:01,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:01,294 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 311 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:01,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:27:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 04:27:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2024-11-28 04:27:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3574468085106384) internal successors, (319), 235 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2024-11-28 04:27:01,304 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 52 [2024-11-28 04:27:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:01,304 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2024-11-28 04:27:01,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2024-11-28 04:27:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:27:01,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:01,308 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] [2024-11-28 04:27:01,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:27:01,308 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:01,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1014688366, now seen corresponding path program 1 times [2024-11-28 04:27:01,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:01,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945855701] [2024-11-28 04:27:01,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:01,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:01,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945855701] [2024-11-28 04:27:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945855701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:01,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:27:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751614779] [2024-11-28 04:27:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:01,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:27:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:01,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:27:01,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:27:01,482 INFO L87 Difference]: Start difference. First operand 236 states and 319 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:01,589 INFO L93 Difference]: Finished difference Result 437 states and 591 transitions. [2024-11-28 04:27:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:27:01,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 04:27:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:01,592 INFO L225 Difference]: With dead ends: 437 [2024-11-28 04:27:01,593 INFO L226 Difference]: Without dead ends: 237 [2024-11-28 04:27:01,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:27:01,597 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:01,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:27:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-28 04:27:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2024-11-28 04:27:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3696682464454977) internal successors, (289), 211 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 289 transitions. [2024-11-28 04:27:01,608 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 289 transitions. Word has length 53 [2024-11-28 04:27:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:01,608 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 289 transitions. [2024-11-28 04:27:01,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 289 transitions. [2024-11-28 04:27:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:27:01,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:01,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:01,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:27:01,610 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:01,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:01,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1013570968, now seen corresponding path program 1 times [2024-11-28 04:27:01,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:01,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682130437] [2024-11-28 04:27:01,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682130437] [2024-11-28 04:27:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682130437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267079243] [2024-11-28 04:27:04,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:04,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:04,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:27:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:04,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-28 04:27:04,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:08,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267079243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:11,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 25] total 54 [2024-11-28 04:27:11,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559826254] [2024-11-28 04:27:11,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:11,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 04:27:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:11,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 04:27:11,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:27:11,805 INFO L87 Difference]: Start difference. First operand 212 states and 289 transitions. Second operand has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:17,363 INFO L93 Difference]: Finished difference Result 636 states and 871 transitions. [2024-11-28 04:27:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 04:27:17,364 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-28 04:27:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:17,366 INFO L225 Difference]: With dead ends: 636 [2024-11-28 04:27:17,366 INFO L226 Difference]: Without dead ends: 474 [2024-11-28 04:27:17,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3944 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1254, Invalid=11628, Unknown=0, NotChecked=0, Total=12882 [2024-11-28 04:27:17,373 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 989 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:17,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 3001 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:27:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-28 04:27:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 359. [2024-11-28 04:27:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2024-11-28 04:27:17,386 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 99 [2024-11-28 04:27:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:17,387 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2024-11-28 04:27:17,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2024-11-28 04:27:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:27:17,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:17,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:17,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:27:17,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:27:17,593 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:17,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1576973281, now seen corresponding path program 1 times [2024-11-28 04:27:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:17,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399838432] [2024-11-28 04:27:17,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399838432] [2024-11-28 04:27:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399838432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40879997] [2024-11-28 04:27:20,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:20,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:20,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:20,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:27:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:20,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-28 04:27:20,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:23,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40879997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:30,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:30,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 62 [2024-11-28 04:27:30,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834224164] [2024-11-28 04:27:30,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:30,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 04:27:30,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:30,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 04:27:30,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3378, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 04:27:30,675 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:38,697 INFO L93 Difference]: Finished difference Result 1057 states and 1446 transitions. [2024-11-28 04:27:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 04:27:38,697 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 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 100 [2024-11-28 04:27:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:38,700 INFO L225 Difference]: With dead ends: 1057 [2024-11-28 04:27:38,701 INFO L226 Difference]: Without dead ends: 780 [2024-11-28 04:27:38,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1960, Invalid=17780, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:27:38,706 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 1493 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:38,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 3490 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:27:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-28 04:27:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 546. [2024-11-28 04:27:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.3541284403669724) internal successors, (738), 545 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 738 transitions. [2024-11-28 04:27:38,722 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 738 transitions. Word has length 100 [2024-11-28 04:27:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:38,723 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 738 transitions. [2024-11-28 04:27:38,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 738 transitions. [2024-11-28 04:27:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:27:38,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:38,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:38,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:27:38,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:27:38,929 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:38,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2083150738, now seen corresponding path program 1 times [2024-11-28 04:27:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:38,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715727647] [2024-11-28 04:27:38,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:38,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:40,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715727647] [2024-11-28 04:27:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715727647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131336470] [2024-11-28 04:27:40,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:40,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:40,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:40,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:27:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:40,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-28 04:27:40,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:42,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131336470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:44,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 21] total 48 [2024-11-28 04:27:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712005658] [2024-11-28 04:27:44,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:44,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 04:27:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:44,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 04:27:44,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:27:44,037 INFO L87 Difference]: Start difference. First operand 546 states and 738 transitions. Second operand has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:51,261 INFO L93 Difference]: Finished difference Result 2106 states and 2854 transitions. [2024-11-28 04:27:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-28 04:27:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 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 100 [2024-11-28 04:27:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:51,268 INFO L225 Difference]: With dead ends: 2106 [2024-11-28 04:27:51,269 INFO L226 Difference]: Without dead ends: 1791 [2024-11-28 04:27:51,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6350 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2459, Invalid=17001, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 04:27:51,274 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1498 mSDsluCounter, 6914 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:51,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 7189 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 04:27:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2024-11-28 04:27:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 832. [2024-11-28 04:27:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.3465703971119134) internal successors, (1119), 831 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1119 transitions. [2024-11-28 04:27:51,305 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1119 transitions. Word has length 100 [2024-11-28 04:27:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:27:51,305 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1119 transitions. [2024-11-28 04:27:51,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:27:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1119 transitions. [2024-11-28 04:27:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:27:51,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:27:51,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:51,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:27:51,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:27:51,508 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:27:51,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1224472682, now seen corresponding path program 1 times [2024-11-28 04:27:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:51,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731245723] [2024-11-28 04:27:51,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731245723] [2024-11-28 04:27:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731245723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218177754] [2024-11-28 04:27:53,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:27:53,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:53,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:53,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:27:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:53,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-28 04:27:53,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:55,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:27:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:27:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218177754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:27:57,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:27:57,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 20] total 50 [2024-11-28 04:27:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20825937] [2024-11-28 04:27:57,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:27:57,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 04:27:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:57,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 04:27:57,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2246, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:27:57,350 INFO L87 Difference]: Start difference. First operand 832 states and 1119 transitions. Second operand has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:05,311 INFO L93 Difference]: Finished difference Result 2066 states and 2803 transitions. [2024-11-28 04:28:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-28 04:28:05,312 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-28 04:28:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:05,316 INFO L225 Difference]: With dead ends: 2066 [2024-11-28 04:28:05,316 INFO L226 Difference]: Without dead ends: 1544 [2024-11-28 04:28:05,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5435 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1769, Invalid=18823, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 04:28:05,320 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 2334 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:28:05,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4561 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:28:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-28 04:28:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1146. [2024-11-28 04:28:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.3362445414847162) internal successors, (1530), 1145 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1530 transitions. [2024-11-28 04:28:05,352 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1530 transitions. Word has length 101 [2024-11-28 04:28:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:05,352 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1530 transitions. [2024-11-28 04:28:05,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1530 transitions. [2024-11-28 04:28:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:28:05,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:05,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:05,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:28:05,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:28:05,555 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:05,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1373936955, now seen corresponding path program 1 times [2024-11-28 04:28:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982485585] [2024-11-28 04:28:05,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:28:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982485585] [2024-11-28 04:28:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982485585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:28:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536214265] [2024-11-28 04:28:07,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:07,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:28:07,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:28:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:07,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-28 04:28:07,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:28:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:09,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:28:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536214265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:28:11,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:28:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 15] total 38 [2024-11-28 04:28:11,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189681670] [2024-11-28 04:28:11,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:28:11,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:28:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:11,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:28:11,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:28:11,203 INFO L87 Difference]: Start difference. First operand 1146 states and 1530 transitions. Second operand has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:13,082 INFO L93 Difference]: Finished difference Result 2131 states and 2862 transitions. [2024-11-28 04:28:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:28:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-28 04:28:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:13,086 INFO L225 Difference]: With dead ends: 2131 [2024-11-28 04:28:13,086 INFO L226 Difference]: Without dead ends: 1247 [2024-11-28 04:28:13,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=585, Invalid=3447, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:28:13,088 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 1170 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:28:13,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1852 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:28:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2024-11-28 04:28:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 947. [2024-11-28 04:28:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.3456659619450317) internal successors, (1273), 946 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1273 transitions. [2024-11-28 04:28:13,113 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1273 transitions. Word has length 101 [2024-11-28 04:28:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:13,114 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1273 transitions. [2024-11-28 04:28:13,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1273 transitions. [2024-11-28 04:28:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:28:13,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:13,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:28:13,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:28:13,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:13,316 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:13,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash 296144241, now seen corresponding path program 1 times [2024-11-28 04:28:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948156026] [2024-11-28 04:28:13,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:28:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948156026] [2024-11-28 04:28:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948156026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:28:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477542900] [2024-11-28 04:28:14,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:14,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:14,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:28:14,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:28:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:28:15,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-28 04:28:15,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:28:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:16,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:28:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477542900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:28:19,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:28:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 35 [2024-11-28 04:28:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195384694] [2024-11-28 04:28:19,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:28:19,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:28:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:19,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:28:19,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:28:19,120 INFO L87 Difference]: Start difference. First operand 947 states and 1273 transitions. Second operand has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:21,315 INFO L93 Difference]: Finished difference Result 1825 states and 2449 transitions. [2024-11-28 04:28:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:28:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 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 102 [2024-11-28 04:28:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:21,319 INFO L225 Difference]: With dead ends: 1825 [2024-11-28 04:28:21,319 INFO L226 Difference]: Without dead ends: 1009 [2024-11-28 04:28:21,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=586, Invalid=3970, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:28:21,321 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 553 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:28:21,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2265 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:28:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-11-28 04:28:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 925. [2024-11-28 04:28:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.3474025974025974) internal successors, (1245), 924 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1245 transitions. [2024-11-28 04:28:21,349 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1245 transitions. Word has length 102 [2024-11-28 04:28:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:21,349 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1245 transitions. [2024-11-28 04:28:21,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1245 transitions. [2024-11-28 04:28:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:28:21,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:21,353 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-28 04:28:21,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:28:21,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:21,554 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:21,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1122330496, now seen corresponding path program 2 times [2024-11-28 04:28:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147650941] [2024-11-28 04:28:21,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:28:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:22,715 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:28:22,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:28:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:29,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:28:29,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147650941] [2024-11-28 04:28:29,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147650941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:28:29,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132487456] [2024-11-28 04:28:29,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:28:29,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:29,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:29,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:28:29,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:28:30,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:28:30,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:28:30,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-28 04:28:30,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:28:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:32,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:28:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132487456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:28:36,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:28:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 66 [2024-11-28 04:28:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813846402] [2024-11-28 04:28:36,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:28:36,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 04:28:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:36,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 04:28:36,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3960, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:28:36,626 INFO L87 Difference]: Start difference. First operand 925 states and 1245 transitions. Second operand has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:28:47,578 INFO L93 Difference]: Finished difference Result 8359 states and 11173 transitions. [2024-11-28 04:28:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-28 04:28:47,579 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 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 150 [2024-11-28 04:28:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:28:47,590 INFO L225 Difference]: With dead ends: 8359 [2024-11-28 04:28:47,590 INFO L226 Difference]: Without dead ends: 7750 [2024-11-28 04:28:47,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13676 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=4230, Invalid=37590, Unknown=0, NotChecked=0, Total=41820 [2024-11-28 04:28:47,596 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 6349 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6349 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:28:47,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6349 Valid, 4660 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:28:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2024-11-28 04:28:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 2228. [2024-11-28 04:28:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 1.3390211046250562) internal successors, (2982), 2227 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2982 transitions. [2024-11-28 04:28:47,686 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2982 transitions. Word has length 150 [2024-11-28 04:28:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:47,686 INFO L471 AbstractCegarLoop]: Abstraction has 2228 states and 2982 transitions. [2024-11-28 04:28:47,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:28:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2982 transitions. [2024-11-28 04:28:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 04:28:47,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:47,692 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-28 04:28:47,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:28:47,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:28:47,892 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:47,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 211462663, now seen corresponding path program 2 times [2024-11-28 04:28:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585680646] [2024-11-28 04:28:47,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:28:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:28:49,040 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:28:49,040 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:28:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:28:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585680646] [2024-11-28 04:28:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585680646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:28:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920190329] [2024-11-28 04:28:53,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:28:53,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:28:53,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:28:53,276 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:28:53,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:28:53,932 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:28:53,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:28:53,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-28 04:28:53,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:28:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 61 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:28:55,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:28:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920190329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:28:57,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:28:57,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 21] total 59 [2024-11-28 04:28:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818460696] [2024-11-28 04:28:57,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:28:57,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:28:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:28:57,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:28:57,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3130, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:28:57,683 INFO L87 Difference]: Start difference. First operand 2228 states and 2982 transitions. Second operand has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:00,636 INFO L93 Difference]: Finished difference Result 5026 states and 6699 transitions. [2024-11-28 04:29:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:29:00,641 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 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 151 [2024-11-28 04:29:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:00,650 INFO L225 Difference]: With dead ends: 5026 [2024-11-28 04:29:00,650 INFO L226 Difference]: Without dead ends: 3078 [2024-11-28 04:29:00,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3459 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1370, Invalid=9972, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 04:29:00,657 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 1605 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:00,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 5702 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:29:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-11-28 04:29:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2524. [2024-11-28 04:29:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 1.3285770907649623) internal successors, (3352), 2523 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3352 transitions. [2024-11-28 04:29:00,720 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3352 transitions. Word has length 151 [2024-11-28 04:29:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:00,721 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3352 transitions. [2024-11-28 04:29:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3352 transitions. [2024-11-28 04:29:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 04:29:00,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:00,727 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-28 04:29:00,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:29:00,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:29:00,928 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:00,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -660574051, now seen corresponding path program 1 times [2024-11-28 04:29:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396010131] [2024-11-28 04:29:00,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:29:02,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:02,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396010131] [2024-11-28 04:29:02,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396010131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:02,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:02,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:29:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052664514] [2024-11-28 04:29:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:02,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:29:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:02,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:29:02,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:29:02,381 INFO L87 Difference]: Start difference. First operand 2524 states and 3352 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:02,530 INFO L93 Difference]: Finished difference Result 3530 states and 4707 transitions. [2024-11-28 04:29:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:29:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 152 [2024-11-28 04:29:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:02,535 INFO L225 Difference]: With dead ends: 3530 [2024-11-28 04:29:02,535 INFO L226 Difference]: Without dead ends: 2504 [2024-11-28 04:29:02,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:02,537 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 432 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:02,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 698 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:29:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2024-11-28 04:29:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2504. [2024-11-28 04:29:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.3284059129045145) internal successors, (3325), 2503 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3325 transitions. [2024-11-28 04:29:02,593 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3325 transitions. Word has length 152 [2024-11-28 04:29:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:02,593 INFO L471 AbstractCegarLoop]: Abstraction has 2504 states and 3325 transitions. [2024-11-28 04:29:02,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3325 transitions. [2024-11-28 04:29:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 04:29:02,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:02,599 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-28 04:29:02,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:29:02,599 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:02,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash -460941491, now seen corresponding path program 1 times [2024-11-28 04:29:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:02,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482347792] [2024-11-28 04:29:02,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:02,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:29:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482347792] [2024-11-28 04:29:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482347792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124175323] [2024-11-28 04:29:03,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:03,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:03,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:29:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:04,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 04:29:04,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:06,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:29:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124175323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:08,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:08,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 15] total 41 [2024-11-28 04:29:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726771471] [2024-11-28 04:29:08,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:08,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 04:29:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:08,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 04:29:08,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1465, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:29:08,738 INFO L87 Difference]: Start difference. First operand 2504 states and 3325 transitions. Second operand has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:11,858 INFO L93 Difference]: Finished difference Result 5215 states and 6982 transitions. [2024-11-28 04:29:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 04:29:11,859 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 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 152 [2024-11-28 04:29:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:11,869 INFO L225 Difference]: With dead ends: 5215 [2024-11-28 04:29:11,869 INFO L226 Difference]: Without dead ends: 3721 [2024-11-28 04:29:11,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=743, Invalid=5419, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 04:29:11,873 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 865 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:11,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 5724 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:29:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2024-11-28 04:29:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 2737. [2024-11-28 04:29:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2736 states have (on average 1.3362573099415205) internal successors, (3656), 2736 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3656 transitions. [2024-11-28 04:29:11,935 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3656 transitions. Word has length 152 [2024-11-28 04:29:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:11,936 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 3656 transitions. [2024-11-28 04:29:11,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3656 transitions. [2024-11-28 04:29:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 04:29:11,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:11,943 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-28 04:29:11,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:29:12,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:29:12,143 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:12,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1605008847, now seen corresponding path program 2 times [2024-11-28 04:29:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583727172] [2024-11-28 04:29:12,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:13,169 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:29:13,169 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583727172] [2024-11-28 04:29:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583727172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807394734] [2024-11-28 04:29:16,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:16,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:16,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:16,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:16,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:29:17,789 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:29:17,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:17,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-28 04:29:17,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:20,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807394734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:24,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 67 [2024-11-28 04:29:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140414175] [2024-11-28 04:29:24,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:24,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-28 04:29:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:24,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-28 04:29:24,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4100, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 04:29:24,506 INFO L87 Difference]: Start difference. First operand 2737 states and 3656 transitions. Second operand has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:41,931 INFO L93 Difference]: Finished difference Result 7580 states and 10023 transitions. [2024-11-28 04:29:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2024-11-28 04:29:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 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 152 [2024-11-28 04:29:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:41,947 INFO L225 Difference]: With dead ends: 7580 [2024-11-28 04:29:41,947 INFO L226 Difference]: Without dead ends: 5843 [2024-11-28 04:29:41,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23753 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=4385, Invalid=66105, Unknown=0, NotChecked=0, Total=70490 [2024-11-28 04:29:41,954 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 2966 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 9136 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 10659 SdHoareTripleChecker+Invalid, 9175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 9136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:41,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 10659 Invalid, 9175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 9136 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:29:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2024-11-28 04:29:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 3406. [2024-11-28 04:29:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.3309838472834068) internal successors, (4532), 3405 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 4532 transitions. [2024-11-28 04:29:42,036 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 4532 transitions. Word has length 152 [2024-11-28 04:29:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:42,037 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 4532 transitions. [2024-11-28 04:29:42,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 4532 transitions. [2024-11-28 04:29:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:29:42,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:42,045 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-11-28 04:29:42,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:42,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:42,246 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:29:42,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 996168025, now seen corresponding path program 2 times [2024-11-28 04:29:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:29:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081370719] [2024-11-28 04:29:42,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:43,278 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:29:43,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:46,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:46,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081370719] [2024-11-28 04:29:46,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081370719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:46,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484107505] [2024-11-28 04:29:46,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:46,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:46,692 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:46,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:29:47,617 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:29:47,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:29:47,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-28 04:29:47,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:49,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484107505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:54,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:29:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 33] total 74 [2024-11-28 04:29:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428835419] [2024-11-28 04:29:54,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:54,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-28 04:29:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:54,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-28 04:29:54,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=4973, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 04:29:54,516 INFO L87 Difference]: Start difference. First operand 3406 states and 4532 transitions. Second operand has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:00,095 INFO L93 Difference]: Finished difference Result 8571 states and 11373 transitions. [2024-11-28 04:30:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:30:00,096 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 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 153 [2024-11-28 04:30:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:00,109 INFO L225 Difference]: With dead ends: 8571 [2024-11-28 04:30:00,110 INFO L226 Difference]: Without dead ends: 5464 [2024-11-28 04:30:00,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1372, Invalid=13880, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 04:30:00,112 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 2267 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 4863 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:00,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 4863 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3848 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:30:00,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2024-11-28 04:30:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4131. [2024-11-28 04:30:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 4130 states have (on average 1.3014527845036319) internal successors, (5375), 4130 states have internal predecessors, (5375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 5375 transitions. [2024-11-28 04:30:00,196 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 5375 transitions. Word has length 153 [2024-11-28 04:30:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:00,196 INFO L471 AbstractCegarLoop]: Abstraction has 4131 states and 5375 transitions. [2024-11-28 04:30:00,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 5375 transitions. [2024-11-28 04:30:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:30:00,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:00,204 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-28 04:30:00,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:00,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:00,405 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:00,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 836606794, now seen corresponding path program 1 times [2024-11-28 04:30:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236128004] [2024-11-28 04:30:00,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:00,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 55 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236128004] [2024-11-28 04:30:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236128004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800414474] [2024-11-28 04:30:04,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:04,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:04,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:04,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:04,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:30:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:05,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-28 04:30:05,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:08,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:12,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800414474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:12,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:12,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 26] total 69 [2024-11-28 04:30:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074163217] [2024-11-28 04:30:12,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:12,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 04:30:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:12,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 04:30:12,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4342, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:30:12,968 INFO L87 Difference]: Start difference. First operand 4131 states and 5375 transitions. Second operand has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:30,135 INFO L93 Difference]: Finished difference Result 16411 states and 21536 transitions. [2024-11-28 04:30:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-28 04:30:30,136 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 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 153 [2024-11-28 04:30:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:30,159 INFO L225 Difference]: With dead ends: 16411 [2024-11-28 04:30:30,159 INFO L226 Difference]: Without dead ends: 12345 [2024-11-28 04:30:30,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18169 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=4590, Invalid=48080, Unknown=0, NotChecked=0, Total=52670 [2024-11-28 04:30:30,168 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 3691 mSDsluCounter, 8115 mSDsCounter, 0 mSdLazyCounter, 6810 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 6881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 6810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:30,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 8263 Invalid, 6881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 6810 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 04:30:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2024-11-28 04:30:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 6847. [2024-11-28 04:30:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6847 states, 6846 states have (on average 1.3236926672509495) internal successors, (9062), 6846 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 9062 transitions. [2024-11-28 04:30:30,310 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 9062 transitions. Word has length 153 [2024-11-28 04:30:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:30,311 INFO L471 AbstractCegarLoop]: Abstraction has 6847 states and 9062 transitions. [2024-11-28 04:30:30,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 9062 transitions. [2024-11-28 04:30:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:30:30,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:30,316 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-28 04:30:30,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:30:30,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:30:30,517 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:30,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2051927795, now seen corresponding path program 1 times [2024-11-28 04:30:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876674501] [2024-11-28 04:30:30,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876674501] [2024-11-28 04:30:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876674501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78376841] [2024-11-28 04:30:32,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:32,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:32,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:30:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:34,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 04:30:34,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:36,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 10 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:38,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78376841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:38,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:38,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 19] total 56 [2024-11-28 04:30:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056647288] [2024-11-28 04:30:38,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:38,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:30:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:38,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:30:38,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2719, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:30:38,682 INFO L87 Difference]: Start difference. First operand 6847 states and 9062 transitions. Second operand has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:43,268 INFO L93 Difference]: Finished difference Result 13886 states and 18441 transitions. [2024-11-28 04:30:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 04:30:43,269 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 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 153 [2024-11-28 04:30:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:43,284 INFO L225 Difference]: With dead ends: 13886 [2024-11-28 04:30:43,284 INFO L226 Difference]: Without dead ends: 8610 [2024-11-28 04:30:43,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5182 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1772, Invalid=13728, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 04:30:43,289 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 2408 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:43,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 6725 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:30:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2024-11-28 04:30:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 5468. [2024-11-28 04:30:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5468 states, 5467 states have (on average 1.3305286263032743) internal successors, (7274), 5467 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5468 states to 5468 states and 7274 transitions. [2024-11-28 04:30:43,397 INFO L78 Accepts]: Start accepts. Automaton has 5468 states and 7274 transitions. Word has length 153 [2024-11-28 04:30:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:43,397 INFO L471 AbstractCegarLoop]: Abstraction has 5468 states and 7274 transitions. [2024-11-28 04:30:43,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:30:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5468 states and 7274 transitions. [2024-11-28 04:30:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:30:43,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:43,401 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:30:43,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:30:43,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:30:43,601 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:43,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash 201357518, now seen corresponding path program 1 times [2024-11-28 04:30:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089324367] [2024-11-28 04:30:43,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:48,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089324367] [2024-11-28 04:30:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089324367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:48,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18324004] [2024-11-28 04:30:48,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:48,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:48,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:48,304 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:48,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:30:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:49,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-28 04:30:49,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:30:50,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18324004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:54,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:54,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 26] total 64 [2024-11-28 04:30:54,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885066815] [2024-11-28 04:30:54,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:54,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 04:30:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:54,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 04:30:54,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:30:54,805 INFO L87 Difference]: Start difference. First operand 5468 states and 7274 transitions. Second operand has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:05,672 INFO L93 Difference]: Finished difference Result 20353 states and 27329 transitions. [2024-11-28 04:31:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-28 04:31:05,672 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 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 156 [2024-11-28 04:31:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:05,702 INFO L225 Difference]: With dead ends: 20353 [2024-11-28 04:31:05,703 INFO L226 Difference]: Without dead ends: 16176 [2024-11-28 04:31:05,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11332 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3091, Invalid=31319, Unknown=0, NotChecked=0, Total=34410 [2024-11-28 04:31:05,716 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 3842 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 4723 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:05,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 6177 Invalid, 4786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4723 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 04:31:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16176 states. [2024-11-28 04:31:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16176 to 7485. [2024-11-28 04:31:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 7484 states have (on average 1.3384553714591128) internal successors, (10017), 7484 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10017 transitions. [2024-11-28 04:31:05,951 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10017 transitions. Word has length 156 [2024-11-28 04:31:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:05,952 INFO L471 AbstractCegarLoop]: Abstraction has 7485 states and 10017 transitions. [2024-11-28 04:31:05,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10017 transitions. [2024-11-28 04:31:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 04:31:05,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:05,959 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:05,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:31:06,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:31:06,160 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:06,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1469699451, now seen corresponding path program 2 times [2024-11-28 04:31:06,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5159398] [2024-11-28 04:31:06,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:31:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:07,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:31:07,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:31:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:31:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5159398] [2024-11-28 04:31:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5159398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:31:07,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41655266] [2024-11-28 04:31:07,627 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:31:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:07,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:07,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:31:08,721 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:31:08,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:31:08,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:31:08,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:31:08,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:31:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 205 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:31:09,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41655266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:31:09,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:31:09,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-28 04:31:09,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863797112] [2024-11-28 04:31:09,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:31:09,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:31:09,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:09,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:31:09,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:31:09,477 INFO L87 Difference]: Start difference. First operand 7485 states and 10017 transitions. Second operand has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:09,952 INFO L93 Difference]: Finished difference Result 25172 states and 33644 transitions. [2024-11-28 04:31:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:31:09,953 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 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 203 [2024-11-28 04:31:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:09,967 INFO L225 Difference]: With dead ends: 25172 [2024-11-28 04:31:09,967 INFO L226 Difference]: Without dead ends: 18246 [2024-11-28 04:31:09,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:31:09,975 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 1080 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:09,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1961 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:31:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18246 states. [2024-11-28 04:31:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18246 to 13925. [2024-11-28 04:31:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13925 states, 13924 states have (on average 1.3316575696638897) internal successors, (18542), 13924 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 18542 transitions. [2024-11-28 04:31:10,310 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 18542 transitions. Word has length 203 [2024-11-28 04:31:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:10,310 INFO L471 AbstractCegarLoop]: Abstraction has 13925 states and 18542 transitions. [2024-11-28 04:31:10,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 18542 transitions. [2024-11-28 04:31:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 04:31:10,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:10,321 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:10,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:31:10,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:10,522 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:31:10,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -845817580, now seen corresponding path program 1 times [2024-11-28 04:31:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:31:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213418394] [2024-11-28 04:31:10,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:31:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 04:31:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:31:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213418394] [2024-11-28 04:31:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213418394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:31:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507211724] [2024-11-28 04:31:16,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:16,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:16,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:16,782 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:16,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:31:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:18,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-11-28 04:31:18,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:23,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:31:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 21 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507211724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:31:30,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:31:30,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 84 [2024-11-28 04:31:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136040673] [2024-11-28 04:31:30,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:31:30,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-28 04:31:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:31:30,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-28 04:31:30,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=6587, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 04:31:30,338 INFO L87 Difference]: Start difference. First operand 13925 states and 18542 transitions. Second operand has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:15,165 INFO L93 Difference]: Finished difference Result 66642 states and 88922 transitions. [2024-11-28 04:32:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2024-11-28 04:32:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 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 204 [2024-11-28 04:32:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:15,204 INFO L225 Difference]: With dead ends: 66642 [2024-11-28 04:32:15,204 INFO L226 Difference]: Without dead ends: 52344 [2024-11-28 04:32:15,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81488 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=10738, Invalid=195832, Unknown=0, NotChecked=0, Total=206570 [2024-11-28 04:32:15,219 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 3702 mSDsluCounter, 14151 mSDsCounter, 0 mSdLazyCounter, 14871 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 14431 SdHoareTripleChecker+Invalid, 14954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 14871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:15,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 14431 Invalid, 14954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 14871 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-28 04:32:15,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52344 states. [2024-11-28 04:32:15,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52344 to 27388. [2024-11-28 04:32:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27388 states, 27387 states have (on average 1.3369116734216964) internal successors, (36614), 27387 states have internal predecessors, (36614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27388 states to 27388 states and 36614 transitions. [2024-11-28 04:32:15,730 INFO L78 Accepts]: Start accepts. Automaton has 27388 states and 36614 transitions. Word has length 204 [2024-11-28 04:32:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:15,730 INFO L471 AbstractCegarLoop]: Abstraction has 27388 states and 36614 transitions. [2024-11-28 04:32:15,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27388 states and 36614 transitions. [2024-11-28 04:32:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 04:32:15,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:15,743 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:15,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:32:15,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:32:15,943 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:15,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1262314959, now seen corresponding path program 1 times [2024-11-28 04:32:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:15,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636832917] [2024-11-28 04:32:15,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-28 04:32:18,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:18,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636832917] [2024-11-28 04:32:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636832917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:32:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128532411] [2024-11-28 04:32:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:18,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:32:18,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:18,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:32:18,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:32:18,696 INFO L87 Difference]: Start difference. First operand 27388 states and 36614 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:18,977 INFO L93 Difference]: Finished difference Result 49926 states and 67155 transitions. [2024-11-28 04:32:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:32:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 204 [2024-11-28 04:32:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:19,003 INFO L225 Difference]: With dead ends: 49926 [2024-11-28 04:32:19,003 INFO L226 Difference]: Without dead ends: 29118 [2024-11-28 04:32:19,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:32:19,019 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 8 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:19,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1437 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2024-11-28 04:32:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 28552. [2024-11-28 04:32:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28552 states, 28551 states have (on average 1.3324226822177858) internal successors, (38042), 28551 states have internal predecessors, (38042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28552 states to 28552 states and 38042 transitions. [2024-11-28 04:32:19,446 INFO L78 Accepts]: Start accepts. Automaton has 28552 states and 38042 transitions. Word has length 204 [2024-11-28 04:32:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:19,447 INFO L471 AbstractCegarLoop]: Abstraction has 28552 states and 38042 transitions. [2024-11-28 04:32:19,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28552 states and 38042 transitions. [2024-11-28 04:32:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 04:32:19,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:19,459 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:19,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 04:32:19,459 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:19,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash -322449372, now seen corresponding path program 1 times [2024-11-28 04:32:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:19,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772413611] [2024-11-28 04:32:19,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:32:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772413611] [2024-11-28 04:32:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772413611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:32:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501066671] [2024-11-28 04:32:21,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:21,227 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:21,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:32:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:22,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-28 04:32:22,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:32:23,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:32:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 109 proven. 84 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:32:25,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501066671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:32:25,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:32:25,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 16] total 34 [2024-11-28 04:32:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397916626] [2024-11-28 04:32:25,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:32:25,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:32:25,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:25,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:32:25,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:32:25,461 INFO L87 Difference]: Start difference. First operand 28552 states and 38042 transitions. Second operand has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:27,409 INFO L93 Difference]: Finished difference Result 48324 states and 64430 transitions. [2024-11-28 04:32:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:32:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 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 204 [2024-11-28 04:32:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:27,425 INFO L225 Difference]: With dead ends: 48324 [2024-11-28 04:32:27,425 INFO L226 Difference]: Without dead ends: 19874 [2024-11-28 04:32:27,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=2078, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:32:27,438 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 601 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:27,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 3474 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:32:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19874 states. [2024-11-28 04:32:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19874 to 19669. [2024-11-28 04:32:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19669 states, 19668 states have (on average 1.3257575757575757) internal successors, (26075), 19668 states have internal predecessors, (26075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19669 states to 19669 states and 26075 transitions. [2024-11-28 04:32:27,708 INFO L78 Accepts]: Start accepts. Automaton has 19669 states and 26075 transitions. Word has length 204 [2024-11-28 04:32:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:27,709 INFO L471 AbstractCegarLoop]: Abstraction has 19669 states and 26075 transitions. [2024-11-28 04:32:27,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 19669 states and 26075 transitions. [2024-11-28 04:32:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 04:32:27,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:27,721 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:27,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:32:27,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:32:27,922 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:27,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -653487970, now seen corresponding path program 1 times [2024-11-28 04:32:27,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:27,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363438950] [2024-11-28 04:32:27,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 96 proven. 97 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 04:32:29,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:32:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363438950] [2024-11-28 04:32:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363438950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:32:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259191024] [2024-11-28 04:32:29,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:29,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:29,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:29,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:32:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:30,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 243 conjuncts are in the unsatisfiable core [2024-11-28 04:32:30,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 64 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:35,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:32:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 15 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259191024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:32:43,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:32:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 36, 38] total 78 [2024-11-28 04:32:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077273798] [2024-11-28 04:32:43,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:32:43,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 04:32:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:32:43,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 04:32:43,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=5586, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 04:32:43,672 INFO L87 Difference]: Start difference. First operand 19669 states and 26075 transitions. Second operand has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:33:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:33:17,688 INFO L93 Difference]: Finished difference Result 98024 states and 130526 transitions. [2024-11-28 04:33:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-28 04:33:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 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 204 [2024-11-28 04:33:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:33:17,754 INFO L225 Difference]: With dead ends: 98024 [2024-11-28 04:33:17,754 INFO L226 Difference]: Without dead ends: 78457 [2024-11-28 04:33:17,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30038 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=6836, Invalid=83464, Unknown=0, NotChecked=0, Total=90300 [2024-11-28 04:33:17,781 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 5268 mSDsluCounter, 12632 mSDsCounter, 0 mSdLazyCounter, 9613 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5268 SdHoareTripleChecker+Valid, 12923 SdHoareTripleChecker+Invalid, 9756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 9613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:33:17,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5268 Valid, 12923 Invalid, 9756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 9613 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 04:33:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78457 states. [2024-11-28 04:33:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78457 to 43251. [2024-11-28 04:33:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43251 states, 43250 states have (on average 1.323121387283237) internal successors, (57225), 43250 states have internal predecessors, (57225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:33:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43251 states to 43251 states and 57225 transitions. [2024-11-28 04:33:18,682 INFO L78 Accepts]: Start accepts. Automaton has 43251 states and 57225 transitions. Word has length 204 [2024-11-28 04:33:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:33:18,682 INFO L471 AbstractCegarLoop]: Abstraction has 43251 states and 57225 transitions. [2024-11-28 04:33:18,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:33:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 43251 states and 57225 transitions. [2024-11-28 04:33:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:33:18,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:33:18,695 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:18,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:33:18,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:18,896 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:33:18,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1437863642, now seen corresponding path program 1 times [2024-11-28 04:33:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679469867] [2024-11-28 04:33:18,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 04:33:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679469867] [2024-11-28 04:33:25,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679469867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:33:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859162141] [2024-11-28 04:33:25,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:33:25,324 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:33:25,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:33:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:27,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-28 04:33:27,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 98 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:33:30,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 51 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859162141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:33:37,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:33:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 26] total 78 [2024-11-28 04:33:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76652654] [2024-11-28 04:33:37,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:33:37,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 04:33:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:37,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 04:33:37,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=5711, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 04:33:37,140 INFO L87 Difference]: Start difference. First operand 43251 states and 57225 transitions. Second operand has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:01,617 INFO L93 Difference]: Finished difference Result 137922 states and 182149 transitions. [2024-11-28 04:34:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-28 04:34:01,618 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 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 206 [2024-11-28 04:34:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:01,715 INFO L225 Difference]: With dead ends: 137922 [2024-11-28 04:34:01,715 INFO L226 Difference]: Without dead ends: 97153 [2024-11-28 04:34:01,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32275 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=5538, Invalid=84762, Unknown=0, NotChecked=0, Total=90300 [2024-11-28 04:34:01,752 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 3601 mSDsluCounter, 16011 mSDsCounter, 0 mSdLazyCounter, 11496 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 16308 SdHoareTripleChecker+Invalid, 11543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 11496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:01,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 16308 Invalid, 11543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 11496 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-28 04:34:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97153 states. [2024-11-28 04:34:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97153 to 62068. [2024-11-28 04:34:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62068 states, 62067 states have (on average 1.3125976767042067) internal successors, (81469), 62067 states have internal predecessors, (81469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62068 states to 62068 states and 81469 transitions. [2024-11-28 04:34:03,242 INFO L78 Accepts]: Start accepts. Automaton has 62068 states and 81469 transitions. Word has length 206 [2024-11-28 04:34:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:03,243 INFO L471 AbstractCegarLoop]: Abstraction has 62068 states and 81469 transitions. [2024-11-28 04:34:03,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 62068 states and 81469 transitions. [2024-11-28 04:34:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:34:03,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:03,259 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:03,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:34:03,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:34:03,459 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:03,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1388882565, now seen corresponding path program 1 times [2024-11-28 04:34:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:03,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198559317] [2024-11-28 04:34:03,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:03,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:34:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198559317] [2024-11-28 04:34:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198559317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578099053] [2024-11-28 04:34:05,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:05,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:05,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:05,262 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:05,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:34:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:08,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-11-28 04:34:08,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:10,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 173 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:34:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578099053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:15,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 29, 24] total 56 [2024-11-28 04:34:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369546952] [2024-11-28 04:34:15,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:15,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:34:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:15,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:34:15,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2776, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:34:15,173 INFO L87 Difference]: Start difference. First operand 62068 states and 81469 transitions. Second operand has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:22,568 INFO L93 Difference]: Finished difference Result 138697 states and 181478 transitions. [2024-11-28 04:34:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 04:34:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 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 206 [2024-11-28 04:34:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:22,627 INFO L225 Difference]: With dead ends: 138697 [2024-11-28 04:34:22,628 INFO L226 Difference]: Without dead ends: 78010 [2024-11-28 04:34:22,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4581 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2078, Invalid=16012, Unknown=0, NotChecked=0, Total=18090 [2024-11-28 04:34:22,656 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 2690 mSDsluCounter, 6189 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:22,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 6419 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:34:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78010 states. [2024-11-28 04:34:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78010 to 62443. [2024-11-28 04:34:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62443 states, 62442 states have (on average 1.3103359918003907) internal successors, (81820), 62442 states have internal predecessors, (81820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 81820 transitions. [2024-11-28 04:34:23,906 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 81820 transitions. Word has length 206 [2024-11-28 04:34:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:23,907 INFO L471 AbstractCegarLoop]: Abstraction has 62443 states and 81820 transitions. [2024-11-28 04:34:23,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 81820 transitions. [2024-11-28 04:34:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:34:23,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:23,922 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:23,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:24,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:34:24,123 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:24,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1760157407, now seen corresponding path program 1 times [2024-11-28 04:34:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792945962] [2024-11-28 04:34:24,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 115 proven. 78 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:34:33,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792945962] [2024-11-28 04:34:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792945962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735386489] [2024-11-28 04:34:33,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:33,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:33,154 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:33,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:34:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:35,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 329 conjuncts are in the unsatisfiable core [2024-11-28 04:34:35,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:43,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735386489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:55,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 54, 39] total 110 [2024-11-28 04:34:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32970219] [2024-11-28 04:34:55,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:55,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-28 04:34:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:55,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-28 04:34:55,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=11210, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 04:34:55,911 INFO L87 Difference]: Start difference. First operand 62443 states and 81820 transitions. Second operand has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:27,161 INFO L93 Difference]: Finished difference Result 202680 states and 263406 transitions. [2024-11-28 04:36:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 567 states. [2024-11-28 04:36:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-28 04:36:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:27,271 INFO L225 Difference]: With dead ends: 202680 [2024-11-28 04:36:27,271 INFO L226 Difference]: Without dead ends: 142783 [2024-11-28 04:36:27,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 672 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195990 ImplicationChecksByTransitivity, 86.7s TimeCoverageRelationStatistics Valid=25980, Invalid=427622, Unknown=0, NotChecked=0, Total=453602 [2024-11-28 04:36:27,324 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 12205 mSDsluCounter, 16099 mSDsCounter, 0 mSdLazyCounter, 10451 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12205 SdHoareTripleChecker+Valid, 16377 SdHoareTripleChecker+Invalid, 10754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 10451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:27,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12205 Valid, 16377 Invalid, 10754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 10451 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-28 04:36:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142783 states. [2024-11-28 04:36:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142783 to 67881. [2024-11-28 04:36:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67881 states, 67880 states have (on average 1.3095904537418974) internal successors, (88895), 67880 states have internal predecessors, (88895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67881 states to 67881 states and 88895 transitions. [2024-11-28 04:36:29,518 INFO L78 Accepts]: Start accepts. Automaton has 67881 states and 88895 transitions. Word has length 206 [2024-11-28 04:36:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:29,518 INFO L471 AbstractCegarLoop]: Abstraction has 67881 states and 88895 transitions. [2024-11-28 04:36:29,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 67881 states and 88895 transitions. [2024-11-28 04:36:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:36:29,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:29,540 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:29,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:36:29,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:36:29,740 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:29,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1835943249, now seen corresponding path program 1 times [2024-11-28 04:36:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293123365] [2024-11-28 04:36:29,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:39,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293123365] [2024-11-28 04:36:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293123365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:39,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028044273] [2024-11-28 04:36:39,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:39,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:39,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:39,123 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:39,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:36:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:40,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-11-28 04:36:40,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 63 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:44,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028044273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:50,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 32] total 88 [2024-11-28 04:36:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839763413] [2024-11-28 04:36:50,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:50,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-28 04:36:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:50,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-28 04:36:50,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7067, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 04:36:50,419 INFO L87 Difference]: Start difference. First operand 67881 states and 88895 transitions. Second operand has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:07,531 INFO L93 Difference]: Finished difference Result 128684 states and 169043 transitions. [2024-11-28 04:37:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-28 04:37:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 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 207 [2024-11-28 04:37:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:07,607 INFO L225 Difference]: With dead ends: 128684 [2024-11-28 04:37:07,607 INFO L226 Difference]: Without dead ends: 71115 [2024-11-28 04:37:07,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 357 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18622 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=4477, Invalid=51455, Unknown=0, NotChecked=0, Total=55932 [2024-11-28 04:37:07,636 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 2401 mSDsluCounter, 7048 mSDsCounter, 0 mSdLazyCounter, 9126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 9176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 9126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:07,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 7221 Invalid, 9176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 9126 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 04:37:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71115 states. [2024-11-28 04:37:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71115 to 66842. [2024-11-28 04:37:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66842 states, 66841 states have (on average 1.3093610209302673) internal successors, (87519), 66841 states have internal predecessors, (87519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66842 states to 66842 states and 87519 transitions. [2024-11-28 04:37:08,745 INFO L78 Accepts]: Start accepts. Automaton has 66842 states and 87519 transitions. Word has length 207 [2024-11-28 04:37:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:08,745 INFO L471 AbstractCegarLoop]: Abstraction has 66842 states and 87519 transitions. [2024-11-28 04:37:08,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 66842 states and 87519 transitions. [2024-11-28 04:37:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:37:08,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:08,755 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:08,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:37:08,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:37:08,955 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:08,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash 390427642, now seen corresponding path program 1 times [2024-11-28 04:37:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:08,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225960553] [2024-11-28 04:37:08,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:08,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:37:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225960553] [2024-11-28 04:37:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225960553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083898488] [2024-11-28 04:37:10,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:10,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:10,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:10,764 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:10,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:37:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:12,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:37:12,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:37:12,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:37:13,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083898488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:13,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 16 [2024-11-28 04:37:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467239456] [2024-11-28 04:37:13,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:13,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:37:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:13,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:37:13,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:37:13,747 INFO L87 Difference]: Start difference. First operand 66842 states and 87519 transitions. Second operand has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:15,015 INFO L93 Difference]: Finished difference Result 132018 states and 172845 transitions. [2024-11-28 04:37:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:37:15,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 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 207 [2024-11-28 04:37:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:15,128 INFO L225 Difference]: With dead ends: 132018 [2024-11-28 04:37:15,128 INFO L226 Difference]: Without dead ends: 65278 [2024-11-28 04:37:15,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:37:15,166 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 370 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:15,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 650 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:37:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2024-11-28 04:37:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 62922. [2024-11-28 04:37:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62922 states, 62921 states have (on average 1.3111361866467475) internal successors, (82498), 62921 states have internal predecessors, (82498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62922 states to 62922 states and 82498 transitions. [2024-11-28 04:37:16,695 INFO L78 Accepts]: Start accepts. Automaton has 62922 states and 82498 transitions. Word has length 207 [2024-11-28 04:37:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:16,695 INFO L471 AbstractCegarLoop]: Abstraction has 62922 states and 82498 transitions. [2024-11-28 04:37:16,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 62922 states and 82498 transitions. [2024-11-28 04:37:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:37:16,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:16,706 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:16,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:37:16,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:37:16,907 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:16,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1858472034, now seen corresponding path program 1 times [2024-11-28 04:37:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938787299] [2024-11-28 04:37:16,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 30 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938787299] [2024-11-28 04:37:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938787299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964062521] [2024-11-28 04:37:28,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:28,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:28,972 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:28,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:37:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:31,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-11-28 04:37:31,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 49 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:37,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 42 proven. 161 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964062521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:43,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:43,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 32, 26] total 93 [2024-11-28 04:37:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538793197] [2024-11-28 04:37:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:43,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-28 04:37:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:43,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-28 04:37:43,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=7982, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 04:37:43,441 INFO L87 Difference]: Start difference. First operand 62922 states and 82498 transitions. Second operand has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:40,219 INFO L93 Difference]: Finished difference Result 269032 states and 353883 transitions. [2024-11-28 04:38:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2024-11-28 04:38:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 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 207 [2024-11-28 04:38:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:40,424 INFO L225 Difference]: With dead ends: 269032 [2024-11-28 04:38:40,424 INFO L226 Difference]: Without dead ends: 214461 [2024-11-28 04:38:40,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69905 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=11051, Invalid=173419, Unknown=0, NotChecked=0, Total=184470 [2024-11-28 04:38:40,459 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 6071 mSDsluCounter, 15762 mSDsCounter, 0 mSdLazyCounter, 13322 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6071 SdHoareTripleChecker+Valid, 16115 SdHoareTripleChecker+Invalid, 13454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 13322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:40,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6071 Valid, 16115 Invalid, 13454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 13322 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-28 04:38:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214461 states. [2024-11-28 04:38:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214461 to 139980. [2024-11-28 04:38:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139980 states, 139979 states have (on average 1.3129540859700384) internal successors, (183786), 139979 states have internal predecessors, (183786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139980 states to 139980 states and 183786 transitions. [2024-11-28 04:38:44,383 INFO L78 Accepts]: Start accepts. Automaton has 139980 states and 183786 transitions. Word has length 207 [2024-11-28 04:38:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:44,387 INFO L471 AbstractCegarLoop]: Abstraction has 139980 states and 183786 transitions. [2024-11-28 04:38:44,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 139980 states and 183786 transitions. [2024-11-28 04:38:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:38:44,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:44,422 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:44,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:38:44,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:38:44,623 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:44,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -134225123, now seen corresponding path program 1 times [2024-11-28 04:38:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784509561] [2024-11-28 04:38:44,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-28 04:38:48,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:48,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784509561] [2024-11-28 04:38:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784509561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:38:48,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216692867] [2024-11-28 04:38:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:48,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:38:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:48,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:38:48,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:38:48,182 INFO L87 Difference]: Start difference. First operand 139980 states and 183786 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:50,312 INFO L93 Difference]: Finished difference Result 318024 states and 418129 transitions. [2024-11-28 04:38:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:38:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-28 04:38:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:50,690 INFO L225 Difference]: With dead ends: 318024 [2024-11-28 04:38:50,690 INFO L226 Difference]: Without dead ends: 190776 [2024-11-28 04:38:50,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:38:50,748 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 368 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:50,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1761 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:38:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190776 states. [2024-11-28 04:38:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190776 to 137439. [2024-11-28 04:38:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137439 states, 137438 states have (on average 1.3140252331960594) internal successors, (180597), 137438 states have internal predecessors, (180597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137439 states to 137439 states and 180597 transitions. [2024-11-28 04:38:53,708 INFO L78 Accepts]: Start accepts. Automaton has 137439 states and 180597 transitions. Word has length 207 [2024-11-28 04:38:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:53,709 INFO L471 AbstractCegarLoop]: Abstraction has 137439 states and 180597 transitions. [2024-11-28 04:38:53,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 137439 states and 180597 transitions. [2024-11-28 04:38:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:38:53,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:53,743 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:53,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 04:38:53,744 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:53,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash 130105270, now seen corresponding path program 1 times [2024-11-28 04:38:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407516573] [2024-11-28 04:38:53,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-28 04:38:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:56,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407516573] [2024-11-28 04:38:56,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407516573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:56,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:38:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432516523] [2024-11-28 04:38:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:56,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:38:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:56,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:38:56,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:38:56,805 INFO L87 Difference]: Start difference. First operand 137439 states and 180597 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:58,431 INFO L93 Difference]: Finished difference Result 276183 states and 363149 transitions. [2024-11-28 04:38:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:38:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 207 [2024-11-28 04:38:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:58,604 INFO L225 Difference]: With dead ends: 276183 [2024-11-28 04:38:58,604 INFO L226 Difference]: Without dead ends: 143517 [2024-11-28 04:38:58,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:38:58,642 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 8 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:58,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1264 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:38:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143517 states. [2024-11-28 04:39:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143517 to 141856. [2024-11-28 04:39:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141856 states, 141855 states have (on average 1.3108314828522083) internal successors, (185948), 141855 states have internal predecessors, (185948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141856 states to 141856 states and 185948 transitions. [2024-11-28 04:39:01,335 INFO L78 Accepts]: Start accepts. Automaton has 141856 states and 185948 transitions. Word has length 207 [2024-11-28 04:39:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:01,335 INFO L471 AbstractCegarLoop]: Abstraction has 141856 states and 185948 transitions. [2024-11-28 04:39:01,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 141856 states and 185948 transitions. [2024-11-28 04:39:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:39:01,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:01,348 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 04:39:01,348 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1002100731, now seen corresponding path program 1 times [2024-11-28 04:39:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375274870] [2024-11-28 04:39:01,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 82 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 04:39:09,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375274870] [2024-11-28 04:39:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375274870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:09,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997147308] [2024-11-28 04:39:09,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:09,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:09,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:09,105 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1ebc5-15c4-4a36-8dcb-7367e30bf254/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:39:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:11,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 319 conjuncts are in the unsatisfiable core [2024-11-28 04:39:11,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 24 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:18,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 207 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:39:28,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997147308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:28,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 42, 38] total 95 [2024-11-28 04:39:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857114605] [2024-11-28 04:39:28,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:28,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 04:39:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:28,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 04:39:28,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=8025, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 04:39:28,623 INFO L87 Difference]: Start difference. First operand 141856 states and 185948 transitions. Second operand has 95 states, 95 states have (on average 5.631578947368421) internal successors, (535), 95 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)