./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:14:00,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:14:00,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:14:00,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:14:00,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:14:00,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:14:00,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:14:00,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:14:00,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:14:00,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:14:00,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:14:00,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:14:00,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:14:00,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:14:00,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:14:00,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:14:00,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:14:00,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:14:00,599 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:00,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:14:00,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:00,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:14:00,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:14:00,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:14:00,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:14:00,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:14:00,601 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_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 [2024-11-24 00:14:00,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:14:00,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:14:00,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:14:00,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:14:00,923 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:14:00,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-24 00:14:04,176 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/data/cd94ff2ca/9e5515a41a94475ea959a46a6f7c6b13/FLAGbecce76cd [2024-11-24 00:14:04,461 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:14:04,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-24 00:14:04,475 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/data/cd94ff2ca/9e5515a41a94475ea959a46a6f7c6b13/FLAGbecce76cd [2024-11-24 00:14:04,490 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/data/cd94ff2ca/9e5515a41a94475ea959a46a6f7c6b13 [2024-11-24 00:14:04,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:14:04,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:14:04,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:14:04,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:14:04,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:14:04,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:14:04" (1/1) ... [2024-11-24 00:14:04,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703cb574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:04, skipping insertion in model container [2024-11-24 00:14:04,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:14:04" (1/1) ... [2024-11-24 00:14:04,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:14:04,850 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_beedf85b-fa73-448b-b9db-629021048426/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-24 00:14:04,877 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_beedf85b-fa73-448b-b9db-629021048426/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-24 00:14:04,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:14:04,914 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:14:05,000 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_beedf85b-fa73-448b-b9db-629021048426/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-24 00:14:05,020 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_beedf85b-fa73-448b-b9db-629021048426/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-24 00:14:05,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:14:05,064 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:14:05,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05 WrapperNode [2024-11-24 00:14:05,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:14:05,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:14:05,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:14:05,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:14:05,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,123 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 505 [2024-11-24 00:14:05,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:14:05,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:14:05,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:14:05,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:14:05,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,159 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]. [2024-11-24 00:14:05,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:14:05,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:14:05,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:14:05,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:14:05,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (1/1) ... [2024-11-24 00:14:05,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:05,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:14:05,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:14:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:14:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:14:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:14:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:14:05,372 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:14:05,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:14:05,988 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-24 00:14:05,989 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:14:06,005 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:14:06,006 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:14:06,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:06 BoogieIcfgContainer [2024-11-24 00:14:06,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:14:06,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:14:06,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:14:06,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:14:06,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:14:04" (1/3) ... [2024-11-24 00:14:06,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f30a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:06, skipping insertion in model container [2024-11-24 00:14:06,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:05" (2/3) ... [2024-11-24 00:14:06,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f30a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:06, skipping insertion in model container [2024-11-24 00:14:06,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:06" (3/3) ... [2024-11-24 00:14:06,019 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-24 00:14:06,035 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:14:06,037 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c that has 1 procedures, 106 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 00:14:06,104 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:14:06,121 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;@2c8063d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:14:06,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:14:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 00:14:06,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:06,132 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] [2024-11-24 00:14:06,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:06,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1038847250, now seen corresponding path program 1 times [2024-11-24 00:14:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46622285] [2024-11-24 00:14:06,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46622285] [2024-11-24 00:14:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46622285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:06,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:14:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872892685] [2024-11-24 00:14:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:06,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:06,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:06,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:06,880 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 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 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) [2024-11-24 00:14:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:07,252 INFO L93 Difference]: Finished difference Result 416 states and 663 transitions. [2024-11-24 00:14:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:14:07,257 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 [2024-11-24 00:14:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:07,272 INFO L225 Difference]: With dead ends: 416 [2024-11-24 00:14:07,273 INFO L226 Difference]: Without dead ends: 353 [2024-11-24 00:14:07,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:14:07,280 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 596 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:07,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 768 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:14:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-24 00:14:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 155. [2024-11-24 00:14:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.4313725490196079) internal successors, (219), 154 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 219 transitions. [2024-11-24 00:14:07,348 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 219 transitions. Word has length 48 [2024-11-24 00:14:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:07,348 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 219 transitions. [2024-11-24 00:14:07,348 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) [2024-11-24 00:14:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 219 transitions. [2024-11-24 00:14:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 00:14:07,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:07,353 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] [2024-11-24 00:14:07,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:14:07,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:07,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1964840261, now seen corresponding path program 1 times [2024-11-24 00:14:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:07,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275137521] [2024-11-24 00:14:07,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275137521] [2024-11-24 00:14:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275137521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:07,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:07,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858310541] [2024-11-24 00:14:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:07,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:07,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:07,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:07,624 INFO L87 Difference]: Start difference. First operand 155 states and 219 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-24 00:14:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:07,693 INFO L93 Difference]: Finished difference Result 244 states and 352 transitions. [2024-11-24 00:14:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 [2024-11-24 00:14:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:07,696 INFO L225 Difference]: With dead ends: 244 [2024-11-24 00:14:07,698 INFO L226 Difference]: Without dead ends: 159 [2024-11-24 00:14:07,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:07,700 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:07,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 301 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-24 00:14:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2024-11-24 00:14:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 156 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2024-11-24 00:14:07,717 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 49 [2024-11-24 00:14:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:07,719 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2024-11-24 00:14:07,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-24 00:14:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2024-11-24 00:14:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:14:07,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:07,722 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] [2024-11-24 00:14:07,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:14:07,723 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:07,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1398279763, now seen corresponding path program 1 times [2024-11-24 00:14:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:07,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272022993] [2024-11-24 00:14:07,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272022993] [2024-11-24 00:14:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272022993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:08,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:08,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:14:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645214501] [2024-11-24 00:14:08,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:08,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:08,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:08,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:08,025 INFO L87 Difference]: Start difference. First operand 157 states and 220 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) [2024-11-24 00:14:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:08,163 INFO L93 Difference]: Finished difference Result 470 states and 690 transitions. [2024-11-24 00:14:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:08,164 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 [2024-11-24 00:14:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:08,166 INFO L225 Difference]: With dead ends: 470 [2024-11-24 00:14:08,166 INFO L226 Difference]: Without dead ends: 388 [2024-11-24 00:14:08,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:08,168 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 298 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:08,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 532 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-24 00:14:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 248. [2024-11-24 00:14:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 246 states have (on average 1.4593495934959348) internal successors, (359), 247 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 359 transitions. [2024-11-24 00:14:08,197 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 359 transitions. Word has length 50 [2024-11-24 00:14:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:08,197 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 359 transitions. [2024-11-24 00:14:08,197 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) [2024-11-24 00:14:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 359 transitions. [2024-11-24 00:14:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:14:08,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:08,199 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] [2024-11-24 00:14:08,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:14:08,199 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1526101883, now seen corresponding path program 1 times [2024-11-24 00:14:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552319276] [2024-11-24 00:14:08,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552319276] [2024-11-24 00:14:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552319276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:14:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554181401] [2024-11-24 00:14:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:08,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:08,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:08,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:08,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:08,444 INFO L87 Difference]: Start difference. First operand 248 states and 359 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) [2024-11-24 00:14:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:08,595 INFO L93 Difference]: Finished difference Result 556 states and 821 transitions. [2024-11-24 00:14:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:08,598 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 [2024-11-24 00:14:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:08,601 INFO L225 Difference]: With dead ends: 556 [2024-11-24 00:14:08,601 INFO L226 Difference]: Without dead ends: 474 [2024-11-24 00:14:08,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:08,603 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 356 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:08,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 537 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-24 00:14:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 376. [2024-11-24 00:14:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 1.4786096256684491) internal successors, (553), 375 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 553 transitions. [2024-11-24 00:14:08,638 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 553 transitions. Word has length 50 [2024-11-24 00:14:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:08,639 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 553 transitions. [2024-11-24 00:14:08,639 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) [2024-11-24 00:14:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 553 transitions. [2024-11-24 00:14:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:14:08,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:08,642 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] [2024-11-24 00:14:08,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:14:08,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:08,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2031133031, now seen corresponding path program 1 times [2024-11-24 00:14:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728624695] [2024-11-24 00:14:08,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728624695] [2024-11-24 00:14:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728624695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:14:08,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145926524] [2024-11-24 00:14:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:08,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:08,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:08,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:08,899 INFO L87 Difference]: Start difference. First operand 376 states and 553 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) [2024-11-24 00:14:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:09,041 INFO L93 Difference]: Finished difference Result 647 states and 960 transitions. [2024-11-24 00:14:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:09,041 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 [2024-11-24 00:14:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:09,045 INFO L225 Difference]: With dead ends: 647 [2024-11-24 00:14:09,046 INFO L226 Difference]: Without dead ends: 565 [2024-11-24 00:14:09,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:09,050 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 361 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:09,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 550 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-24 00:14:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 467. [2024-11-24 00:14:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4881720430107528) internal successors, (692), 466 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 692 transitions. [2024-11-24 00:14:09,067 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 692 transitions. Word has length 50 [2024-11-24 00:14:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:09,068 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 692 transitions. [2024-11-24 00:14:09,068 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) [2024-11-24 00:14:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 692 transitions. [2024-11-24 00:14:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-24 00:14:09,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:09,069 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] [2024-11-24 00:14:09,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:14:09,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:09,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 222346276, now seen corresponding path program 1 times [2024-11-24 00:14:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419956168] [2024-11-24 00:14:09,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:09,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419956168] [2024-11-24 00:14:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419956168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:09,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:14:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919996938] [2024-11-24 00:14:09,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:09,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:09,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:09,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:09,282 INFO L87 Difference]: Start difference. First operand 467 states and 692 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2024-11-24 00:14:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:09,426 INFO L93 Difference]: Finished difference Result 911 states and 1360 transitions. [2024-11-24 00:14:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 [2024-11-24 00:14:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:09,428 INFO L225 Difference]: With dead ends: 911 [2024-11-24 00:14:09,429 INFO L226 Difference]: Without dead ends: 467 [2024-11-24 00:14:09,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:09,430 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 380 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:09,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 80 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-24 00:14:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-11-24 00:14:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4666666666666666) internal successors, (682), 466 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 682 transitions. [2024-11-24 00:14:09,445 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 682 transitions. Word has length 51 [2024-11-24 00:14:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:09,445 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 682 transitions. [2024-11-24 00:14:09,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2024-11-24 00:14:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 682 transitions. [2024-11-24 00:14:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:14:09,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:09,447 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] [2024-11-24 00:14:09,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:14:09,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:09,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:09,447 INFO L85 PathProgramCache]: Analyzing trace with hash 323435980, now seen corresponding path program 1 times [2024-11-24 00:14:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217459338] [2024-11-24 00:14:09,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217459338] [2024-11-24 00:14:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217459338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:14:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863176585] [2024-11-24 00:14:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:09,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:09,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:09,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:09,589 INFO L87 Difference]: Start difference. First operand 467 states and 682 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-24 00:14:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:09,717 INFO L93 Difference]: Finished difference Result 907 states and 1336 transitions. [2024-11-24 00:14:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 [2024-11-24 00:14:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:09,719 INFO L225 Difference]: With dead ends: 907 [2024-11-24 00:14:09,720 INFO L226 Difference]: Without dead ends: 467 [2024-11-24 00:14:09,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:09,721 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 362 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:09,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 88 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-24 00:14:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-11-24 00:14:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4451612903225806) internal successors, (672), 466 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 672 transitions. [2024-11-24 00:14:09,737 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 672 transitions. Word has length 52 [2024-11-24 00:14:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:09,737 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 672 transitions. [2024-11-24 00:14:09,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-24 00:14:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 672 transitions. [2024-11-24 00:14:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:14:09,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:09,738 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] [2024-11-24 00:14:09,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:14:09,738 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:09,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 549255064, now seen corresponding path program 1 times [2024-11-24 00:14:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220618714] [2024-11-24 00:14:09,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220618714] [2024-11-24 00:14:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220618714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:09,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:09,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:14:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005662795] [2024-11-24 00:14:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:09,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:14:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:09,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:14:09,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:14:09,913 INFO L87 Difference]: Start difference. First operand 467 states and 672 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-11-24 00:14:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:10,073 INFO L93 Difference]: Finished difference Result 903 states and 1312 transitions. [2024-11-24 00:14:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:14:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 [2024-11-24 00:14:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:10,076 INFO L225 Difference]: With dead ends: 903 [2024-11-24 00:14:10,076 INFO L226 Difference]: Without dead ends: 467 [2024-11-24 00:14:10,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:14:10,077 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 344 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:10,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 96 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:14:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-24 00:14:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-11-24 00:14:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4236559139784946) internal successors, (662), 466 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 662 transitions. [2024-11-24 00:14:10,099 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 662 transitions. Word has length 53 [2024-11-24 00:14:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:10,100 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 662 transitions. [2024-11-24 00:14:10,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-11-24 00:14:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 662 transitions. [2024-11-24 00:14:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:14:10,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:10,101 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:10,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:14:10,101 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:10,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash -680909608, now seen corresponding path program 1 times [2024-11-24 00:14:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:10,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793389497] [2024-11-24 00:14:10,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:10,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:10,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793389497] [2024-11-24 00:14:10,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793389497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:10,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:14:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678235241] [2024-11-24 00:14:10,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:10,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:14:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:10,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:14:10,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:14:10,611 INFO L87 Difference]: Start difference. First operand 467 states and 662 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:11,050 INFO L93 Difference]: Finished difference Result 1260 states and 1810 transitions. [2024-11-24 00:14:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:14:11,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:14:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:11,057 INFO L225 Difference]: With dead ends: 1260 [2024-11-24 00:14:11,057 INFO L226 Difference]: Without dead ends: 856 [2024-11-24 00:14:11,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:14:11,060 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 706 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:11,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 324 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:14:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-11-24 00:14:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 467. [2024-11-24 00:14:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.421505376344086) internal successors, (661), 466 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 661 transitions. [2024-11-24 00:14:11,082 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 661 transitions. Word has length 54 [2024-11-24 00:14:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:11,082 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 661 transitions. [2024-11-24 00:14:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 661 transitions. [2024-11-24 00:14:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:14:11,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:11,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:11,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:14:11,084 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:11,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1757672516, now seen corresponding path program 1 times [2024-11-24 00:14:11,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:11,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436780483] [2024-11-24 00:14:11,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:11,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436780483] [2024-11-24 00:14:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436780483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:14:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530518512] [2024-11-24 00:14:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:11,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:14:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:11,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:14:11,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:14:11,561 INFO L87 Difference]: Start difference. First operand 467 states and 661 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:12,190 INFO L93 Difference]: Finished difference Result 1288 states and 1843 transitions. [2024-11-24 00:14:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:14:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:14:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:12,194 INFO L225 Difference]: With dead ends: 1288 [2024-11-24 00:14:12,195 INFO L226 Difference]: Without dead ends: 889 [2024-11-24 00:14:12,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:14:12,196 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 593 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:12,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 511 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:14:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-24 00:14:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 467. [2024-11-24 00:14:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4172043010752688) internal successors, (659), 466 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 659 transitions. [2024-11-24 00:14:12,216 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 659 transitions. Word has length 54 [2024-11-24 00:14:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:12,216 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 659 transitions. [2024-11-24 00:14:12,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 659 transitions. [2024-11-24 00:14:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:14:12,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:12,218 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:12,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:14:12,218 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:12,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash -728953036, now seen corresponding path program 1 times [2024-11-24 00:14:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:12,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136985611] [2024-11-24 00:14:12,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136985611] [2024-11-24 00:14:12,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136985611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:12,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:12,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:14:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60613186] [2024-11-24 00:14:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:12,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:14:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:12,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:14:12,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:14:12,635 INFO L87 Difference]: Start difference. First operand 467 states and 659 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:13,201 INFO L93 Difference]: Finished difference Result 1273 states and 1817 transitions. [2024-11-24 00:14:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:14:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 00:14:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:13,206 INFO L225 Difference]: With dead ends: 1273 [2024-11-24 00:14:13,206 INFO L226 Difference]: Without dead ends: 884 [2024-11-24 00:14:13,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:14:13,208 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 706 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:13,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 406 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:14:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-24 00:14:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 467. [2024-11-24 00:14:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4086021505376345) internal successors, (655), 466 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 655 transitions. [2024-11-24 00:14:13,252 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 655 transitions. Word has length 55 [2024-11-24 00:14:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:13,252 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 655 transitions. [2024-11-24 00:14:13,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 655 transitions. [2024-11-24 00:14:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:14:13,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:13,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:13,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:14:13,253 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:13,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2014195720, now seen corresponding path program 1 times [2024-11-24 00:14:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062854888] [2024-11-24 00:14:13,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:13,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062854888] [2024-11-24 00:14:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062854888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:14,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-24 00:14:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332492804] [2024-11-24 00:14:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:14,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 00:14:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:14,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 00:14:14,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:14:14,890 INFO L87 Difference]: Start difference. First operand 467 states and 655 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:18,075 INFO L93 Difference]: Finished difference Result 1744 states and 2498 transitions. [2024-11-24 00:14:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 00:14:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 00:14:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:18,082 INFO L225 Difference]: With dead ends: 1744 [2024-11-24 00:14:18,082 INFO L226 Difference]: Without dead ends: 1653 [2024-11-24 00:14:18,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 00:14:18,085 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 819 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:18,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 2523 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:14:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2024-11-24 00:14:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 467. [2024-11-24 00:14:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.4064516129032258) internal successors, (654), 466 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 654 transitions. [2024-11-24 00:14:18,113 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 654 transitions. Word has length 56 [2024-11-24 00:14:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:18,113 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 654 transitions. [2024-11-24 00:14:18,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 654 transitions. [2024-11-24 00:14:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:14:18,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:18,115 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:18,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:14:18,116 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:18,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1797287643, now seen corresponding path program 1 times [2024-11-24 00:14:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823047843] [2024-11-24 00:14:18,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:18,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:18,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823047843] [2024-11-24 00:14:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823047843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:18,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:18,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:14:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206809386] [2024-11-24 00:14:18,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:18,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:14:18,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:18,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:14:18,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:14:18,796 INFO L87 Difference]: Start difference. First operand 467 states and 654 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:19,516 INFO L93 Difference]: Finished difference Result 1796 states and 2579 transitions. [2024-11-24 00:14:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:14:19,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 00:14:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:19,522 INFO L225 Difference]: With dead ends: 1796 [2024-11-24 00:14:19,523 INFO L226 Difference]: Without dead ends: 1604 [2024-11-24 00:14:19,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:14:19,524 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 630 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:19,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1020 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:14:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2024-11-24 00:14:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 446. [2024-11-24 00:14:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.40990990990991) internal successors, (626), 445 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 626 transitions. [2024-11-24 00:14:19,556 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 626 transitions. Word has length 56 [2024-11-24 00:14:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:19,556 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 626 transitions. [2024-11-24 00:14:19,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 626 transitions. [2024-11-24 00:14:19,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:14:19,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:19,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:19,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:14:19,559 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:19,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 929811098, now seen corresponding path program 1 times [2024-11-24 00:14:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:19,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283729196] [2024-11-24 00:14:19,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:19,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283729196] [2024-11-24 00:14:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283729196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 00:14:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667305545] [2024-11-24 00:14:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:21,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:14:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:21,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:14:21,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:14:21,066 INFO L87 Difference]: Start difference. First operand 446 states and 626 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:23,710 INFO L93 Difference]: Finished difference Result 1780 states and 2557 transitions. [2024-11-24 00:14:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:14:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 00:14:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:23,718 INFO L225 Difference]: With dead ends: 1780 [2024-11-24 00:14:23,718 INFO L226 Difference]: Without dead ends: 1603 [2024-11-24 00:14:23,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:14:23,721 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 739 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:23,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 2238 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:14:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2024-11-24 00:14:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 456. [2024-11-24 00:14:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 454 states have (on average 1.4052863436123348) internal successors, (638), 455 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 638 transitions. [2024-11-24 00:14:23,761 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 638 transitions. Word has length 56 [2024-11-24 00:14:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:23,762 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 638 transitions. [2024-11-24 00:14:23,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 638 transitions. [2024-11-24 00:14:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:14:23,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:23,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:23,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:14:23,764 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:23,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1026982439, now seen corresponding path program 1 times [2024-11-24 00:14:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471522435] [2024-11-24 00:14:23,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471522435] [2024-11-24 00:14:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471522435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:24,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:14:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81285210] [2024-11-24 00:14:24,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:24,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:14:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:24,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:14:24,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:14:24,588 INFO L87 Difference]: Start difference. First operand 456 states and 638 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:25,640 INFO L93 Difference]: Finished difference Result 994 states and 1423 transitions. [2024-11-24 00:14:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:14:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 00:14:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:25,645 INFO L225 Difference]: With dead ends: 994 [2024-11-24 00:14:25,645 INFO L226 Difference]: Without dead ends: 817 [2024-11-24 00:14:25,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:14:25,648 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 460 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:25,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1074 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:14:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-24 00:14:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 443. [2024-11-24 00:14:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 441 states have (on average 1.4058956916099774) internal successors, (620), 442 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 620 transitions. [2024-11-24 00:14:25,668 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 620 transitions. Word has length 56 [2024-11-24 00:14:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:25,669 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 620 transitions. [2024-11-24 00:14:25,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 620 transitions. [2024-11-24 00:14:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:14:25,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:25,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:25,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:14:25,670 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:25,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash 788720349, now seen corresponding path program 1 times [2024-11-24 00:14:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:25,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877047361] [2024-11-24 00:14:25,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877047361] [2024-11-24 00:14:26,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877047361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:26,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:26,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:14:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86430939] [2024-11-24 00:14:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:26,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:14:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:26,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:14:26,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:14:26,515 INFO L87 Difference]: Start difference. First operand 443 states and 620 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:27,390 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2024-11-24 00:14:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:14:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-24 00:14:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:27,395 INFO L225 Difference]: With dead ends: 978 [2024-11-24 00:14:27,395 INFO L226 Difference]: Without dead ends: 798 [2024-11-24 00:14:27,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:14:27,397 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 454 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:27,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1112 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:14:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-24 00:14:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 420. [2024-11-24 00:14:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.4152744630071599) internal successors, (593), 419 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 593 transitions. [2024-11-24 00:14:27,412 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 593 transitions. Word has length 57 [2024-11-24 00:14:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:27,413 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 593 transitions. [2024-11-24 00:14:27,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 593 transitions. [2024-11-24 00:14:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 00:14:27,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:27,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:27,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:14:27,414 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:27,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:27,414 INFO L85 PathProgramCache]: Analyzing trace with hash -773234718, now seen corresponding path program 1 times [2024-11-24 00:14:27,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:27,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180620057] [2024-11-24 00:14:27,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180620057] [2024-11-24 00:14:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180620057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:27,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:27,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:27,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706087653] [2024-11-24 00:14:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:27,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:27,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:27,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,514 INFO L87 Difference]: Start difference. First operand 420 states and 593 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:27,539 INFO L93 Difference]: Finished difference Result 1086 states and 1560 transitions. [2024-11-24 00:14:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-24 00:14:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:27,542 INFO L225 Difference]: With dead ends: 1086 [2024-11-24 00:14:27,542 INFO L226 Difference]: Without dead ends: 724 [2024-11-24 00:14:27,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,543 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 49 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:27,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 276 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-24 00:14:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 722. [2024-11-24 00:14:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.3994452149791956) internal successors, (1009), 721 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1009 transitions. [2024-11-24 00:14:27,559 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1009 transitions. Word has length 76 [2024-11-24 00:14:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:27,559 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1009 transitions. [2024-11-24 00:14:27,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1009 transitions. [2024-11-24 00:14:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 00:14:27,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:27,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:27,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:14:27,562 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:27,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2013626748, now seen corresponding path program 1 times [2024-11-24 00:14:27,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173181206] [2024-11-24 00:14:27,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173181206] [2024-11-24 00:14:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173181206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:27,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421638847] [2024-11-24 00:14:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:27,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:27,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:27,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,681 INFO L87 Difference]: Start difference. First operand 722 states and 1009 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:27,704 INFO L93 Difference]: Finished difference Result 1807 states and 2544 transitions. [2024-11-24 00:14:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 00:14:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:27,708 INFO L225 Difference]: With dead ends: 1807 [2024-11-24 00:14:27,708 INFO L226 Difference]: Without dead ends: 1143 [2024-11-24 00:14:27,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,710 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:27,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2024-11-24 00:14:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1069. [2024-11-24 00:14:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 1.392322097378277) internal successors, (1487), 1068 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1487 transitions. [2024-11-24 00:14:27,736 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1487 transitions. Word has length 77 [2024-11-24 00:14:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:27,737 INFO L471 AbstractCegarLoop]: Abstraction has 1069 states and 1487 transitions. [2024-11-24 00:14:27,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1487 transitions. [2024-11-24 00:14:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 00:14:27,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:27,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:27,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:14:27,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:27,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 31132410, now seen corresponding path program 1 times [2024-11-24 00:14:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344952179] [2024-11-24 00:14:27,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344952179] [2024-11-24 00:14:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344952179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:27,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:27,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:27,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747719865] [2024-11-24 00:14:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:27,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:27,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:27,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,883 INFO L87 Difference]: Start difference. First operand 1069 states and 1487 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:27,910 INFO L93 Difference]: Finished difference Result 2983 states and 4150 transitions. [2024-11-24 00:14:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 00:14:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:27,916 INFO L225 Difference]: With dead ends: 2983 [2024-11-24 00:14:27,916 INFO L226 Difference]: Without dead ends: 1972 [2024-11-24 00:14:27,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:27,918 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:27,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-24 00:14:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1862. [2024-11-24 00:14:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 1.3761418592154755) internal successors, (2561), 1861 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2561 transitions. [2024-11-24 00:14:27,959 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2561 transitions. Word has length 78 [2024-11-24 00:14:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:27,959 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 2561 transitions. [2024-11-24 00:14:27,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2561 transitions. [2024-11-24 00:14:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:14:27,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:27,960 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:27,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:14:27,961 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:27,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 769651115, now seen corresponding path program 1 times [2024-11-24 00:14:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:27,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288867062] [2024-11-24 00:14:27,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:27,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288867062] [2024-11-24 00:14:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288867062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810788858] [2024-11-24 00:14:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:28,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:28,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:28,075 INFO L87 Difference]: Start difference. First operand 1862 states and 2561 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:28,104 INFO L93 Difference]: Finished difference Result 5254 states and 7183 transitions. [2024-11-24 00:14:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-24 00:14:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:28,114 INFO L225 Difference]: With dead ends: 5254 [2024-11-24 00:14:28,114 INFO L226 Difference]: Without dead ends: 3450 [2024-11-24 00:14:28,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:28,117 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 41 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:28,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 258 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2024-11-24 00:14:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3232. [2024-11-24 00:14:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 3231 states have (on average 1.3488084184463014) internal successors, (4358), 3231 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4358 transitions. [2024-11-24 00:14:28,189 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4358 transitions. Word has length 79 [2024-11-24 00:14:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:28,190 INFO L471 AbstractCegarLoop]: Abstraction has 3232 states and 4358 transitions. [2024-11-24 00:14:28,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4358 transitions. [2024-11-24 00:14:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 00:14:28,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:28,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:28,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:14:28,192 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:28,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1757386099, now seen corresponding path program 1 times [2024-11-24 00:14:28,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:28,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766922498] [2024-11-24 00:14:28,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:28,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766922498] [2024-11-24 00:14:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766922498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:14:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025867046] [2024-11-24 00:14:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:28,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:14:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:28,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:14:28,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:14:28,462 INFO L87 Difference]: Start difference. First operand 3232 states and 4358 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:28,503 INFO L93 Difference]: Finished difference Result 3330 states and 4487 transitions. [2024-11-24 00:14:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:14:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 00:14:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:28,512 INFO L225 Difference]: With dead ends: 3330 [2024-11-24 00:14:28,512 INFO L226 Difference]: Without dead ends: 3328 [2024-11-24 00:14:28,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:14:28,514 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:28,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2024-11-24 00:14:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 3328. [2024-11-24 00:14:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3327 states have (on average 1.3267207694619778) internal successors, (4414), 3327 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4414 transitions. [2024-11-24 00:14:28,580 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4414 transitions. Word has length 80 [2024-11-24 00:14:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:28,580 INFO L471 AbstractCegarLoop]: Abstraction has 3328 states and 4414 transitions. [2024-11-24 00:14:28,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4414 transitions. [2024-11-24 00:14:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 00:14:28,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:28,581 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:28,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:14:28,582 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:28,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1852306095, now seen corresponding path program 1 times [2024-11-24 00:14:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398266593] [2024-11-24 00:14:28,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398266593] [2024-11-24 00:14:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398266593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:14:28,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:14:28,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:14:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638675589] [2024-11-24 00:14:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:14:28,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:14:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:28,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:14:28,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:28,640 INFO L87 Difference]: Start difference. First operand 3328 states and 4414 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:28,676 INFO L93 Difference]: Finished difference Result 6724 states and 8936 transitions. [2024-11-24 00:14:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:14:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 00:14:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:28,695 INFO L225 Difference]: With dead ends: 6724 [2024-11-24 00:14:28,695 INFO L226 Difference]: Without dead ends: 3454 [2024-11-24 00:14:28,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:14:28,701 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 67 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:28,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:14:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2024-11-24 00:14:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3452. [2024-11-24 00:14:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3451 states have (on average 1.3057084902926688) internal successors, (4506), 3451 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 4506 transitions. [2024-11-24 00:14:28,777 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 4506 transitions. Word has length 80 [2024-11-24 00:14:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:28,777 INFO L471 AbstractCegarLoop]: Abstraction has 3452 states and 4506 transitions. [2024-11-24 00:14:28,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 4506 transitions. [2024-11-24 00:14:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:14:28,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:28,779 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:28,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:14:28,779 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:28,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1815794868, now seen corresponding path program 1 times [2024-11-24 00:14:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:28,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327732384] [2024-11-24 00:14:28,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:29,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:29,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327732384] [2024-11-24 00:14:29,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327732384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:29,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916952668] [2024-11-24 00:14:29,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:29,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:29,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:29,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:14:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:29,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:14:29,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:14:30,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:14:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916952668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:14:30,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:14:30,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 18 [2024-11-24 00:14:30,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955118383] [2024-11-24 00:14:30,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:30,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:14:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:30,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:14:30,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:14:30,794 INFO L87 Difference]: Start difference. First operand 3452 states and 4506 transitions. Second operand has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 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) [2024-11-24 00:14:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:14:35,506 INFO L93 Difference]: Finished difference Result 21661 states and 28405 transitions. [2024-11-24 00:14:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-24 00:14:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 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 101 [2024-11-24 00:14:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:14:35,554 INFO L225 Difference]: With dead ends: 21661 [2024-11-24 00:14:35,554 INFO L226 Difference]: Without dead ends: 18267 [2024-11-24 00:14:35,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=920, Invalid=4192, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 00:14:35,564 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1809 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:14:35,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 1150 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:14:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18267 states. [2024-11-24 00:14:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18267 to 11627. [2024-11-24 00:14:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11627 states, 11626 states have (on average 1.31747806640289) internal successors, (15317), 11626 states have internal predecessors, (15317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:14:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11627 states to 11627 states and 15317 transitions. [2024-11-24 00:14:35,960 INFO L78 Accepts]: Start accepts. Automaton has 11627 states and 15317 transitions. Word has length 101 [2024-11-24 00:14:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:14:35,961 INFO L471 AbstractCegarLoop]: Abstraction has 11627 states and 15317 transitions. [2024-11-24 00:14:35,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 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) [2024-11-24 00:14:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 11627 states and 15317 transitions. [2024-11-24 00:14:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:14:35,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:35,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:35,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:14:36,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:14:36,169 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:14:36,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1635937356, now seen corresponding path program 1 times [2024-11-24 00:14:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729785484] [2024-11-24 00:14:36,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:14:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729785484] [2024-11-24 00:14:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729785484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:14:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606969896] [2024-11-24 00:14:37,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:37,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:14:37,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:37,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:14:37,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:14:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:14:37,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 00:14:37,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:14:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:40,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:14:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:14:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606969896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:14:43,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:14:43,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 21] total 56 [2024-11-24 00:14:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424424493] [2024-11-24 00:14:43,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:14:43,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-24 00:14:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:14:43,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-24 00:14:43,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2851, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 00:14:43,899 INFO L87 Difference]: Start difference. First operand 11627 states and 15317 transitions. Second operand has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 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) [2024-11-24 00:16:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:04,357 INFO L93 Difference]: Finished difference Result 149837 states and 197613 transitions. [2024-11-24 00:16:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 481 states. [2024-11-24 00:16:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 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) Word has length 102 [2024-11-24 00:16:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:04,667 INFO L225 Difference]: With dead ends: 149837 [2024-11-24 00:16:04,668 INFO L226 Difference]: Without dead ends: 138285 [2024-11-24 00:16:04,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119136 ImplicationChecksByTransitivity, 68.2s TimeCoverageRelationStatistics Valid=19060, Invalid=266630, Unknown=0, NotChecked=0, Total=285690 [2024-11-24 00:16:04,726 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 11325 mSDsluCounter, 8665 mSDsCounter, 0 mSdLazyCounter, 13669 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11325 SdHoareTripleChecker+Valid, 8934 SdHoareTripleChecker+Invalid, 13919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 13669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:04,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11325 Valid, 8934 Invalid, 13919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 13669 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-24 00:16:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138285 states. [2024-11-24 00:16:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138285 to 39267. [2024-11-24 00:16:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39267 states, 39266 states have (on average 1.3178576885855446) internal successors, (51747), 39266 states have internal predecessors, (51747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39267 states to 39267 states and 51747 transitions. [2024-11-24 00:16:06,159 INFO L78 Accepts]: Start accepts. Automaton has 39267 states and 51747 transitions. Word has length 102 [2024-11-24 00:16:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:06,159 INFO L471 AbstractCegarLoop]: Abstraction has 39267 states and 51747 transitions. [2024-11-24 00:16:06,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 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) [2024-11-24 00:16:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 39267 states and 51747 transitions. [2024-11-24 00:16:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:16:06,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:06,166 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:06,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:16:06,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:16:06,371 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:06,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1399222449, now seen corresponding path program 1 times [2024-11-24 00:16:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106822438] [2024-11-24 00:16:06,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106822438] [2024-11-24 00:16:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106822438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728477806] [2024-11-24 00:16:06,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:06,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:06,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:06,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:06,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:16:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:07,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:16:07,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:08,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:16:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728477806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:16:10,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:16:10,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 33 [2024-11-24 00:16:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471006095] [2024-11-24 00:16:10,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:16:10,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:16:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:10,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:16:10,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:16:10,513 INFO L87 Difference]: Start difference. First operand 39267 states and 51747 transitions. Second operand has 34 states, 34 states have (on average 7.588235294117647) internal successors, (258), 33 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:16,717 INFO L93 Difference]: Finished difference Result 129564 states and 171193 transitions. [2024-11-24 00:16:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-24 00:16:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.588235294117647) internal successors, (258), 33 states have internal predecessors, (258), 0 states have call successors, (0), 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 103 [2024-11-24 00:16:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:16,884 INFO L225 Difference]: With dead ends: 129564 [2024-11-24 00:16:16,884 INFO L226 Difference]: Without dead ends: 117109 [2024-11-24 00:16:16,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2085, Invalid=7035, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:16:16,926 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 2979 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2979 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:16,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2979 Valid, 2233 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:16:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117109 states. [2024-11-24 00:16:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117109 to 49152. [2024-11-24 00:16:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49152 states, 49151 states have (on average 1.3160668145103864) internal successors, (64686), 49151 states have internal predecessors, (64686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49152 states to 49152 states and 64686 transitions. [2024-11-24 00:16:18,067 INFO L78 Accepts]: Start accepts. Automaton has 49152 states and 64686 transitions. Word has length 103 [2024-11-24 00:16:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:18,068 INFO L471 AbstractCegarLoop]: Abstraction has 49152 states and 64686 transitions. [2024-11-24 00:16:18,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.588235294117647) internal successors, (258), 33 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 49152 states and 64686 transitions. [2024-11-24 00:16:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:16:18,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:18,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:18,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:16:18,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:16:18,281 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:18,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1444926327, now seen corresponding path program 1 times [2024-11-24 00:16:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602924812] [2024-11-24 00:16:18,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602924812] [2024-11-24 00:16:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602924812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685224100] [2024-11-24 00:16:19,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:19,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:19,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:19,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:19,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:16:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:19,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:16:19,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:20,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:16:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685224100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:16:21,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:16:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 00:16:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407182285] [2024-11-24 00:16:21,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:16:21,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:16:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:21,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:16:21,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:16:21,962 INFO L87 Difference]: Start difference. First operand 49152 states and 64686 transitions. Second operand has 27 states, 27 states have (on average 8.592592592592593) internal successors, (232), 26 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:23,835 INFO L93 Difference]: Finished difference Result 161927 states and 211859 transitions. [2024-11-24 00:16:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 00:16:23,835 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.592592592592593) internal successors, (232), 26 states have internal predecessors, (232), 0 states have call successors, (0), 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 103 [2024-11-24 00:16:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:24,071 INFO L225 Difference]: With dead ends: 161927 [2024-11-24 00:16:24,072 INFO L226 Difference]: Without dead ends: 124477 [2024-11-24 00:16:24,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 00:16:24,132 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 681 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:24,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1009 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:16:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124477 states. [2024-11-24 00:16:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124477 to 102067. [2024-11-24 00:16:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102067 states, 102066 states have (on average 1.3069778378696137) internal successors, (133398), 102066 states have internal predecessors, (133398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102067 states to 102067 states and 133398 transitions. [2024-11-24 00:16:26,048 INFO L78 Accepts]: Start accepts. Automaton has 102067 states and 133398 transitions. Word has length 103 [2024-11-24 00:16:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:26,048 INFO L471 AbstractCegarLoop]: Abstraction has 102067 states and 133398 transitions. [2024-11-24 00:16:26,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.592592592592593) internal successors, (232), 26 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 102067 states and 133398 transitions. [2024-11-24 00:16:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:16:26,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:26,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:26,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:16:26,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:16:26,263 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:26,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 945568886, now seen corresponding path program 1 times [2024-11-24 00:16:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079967666] [2024-11-24 00:16:26,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:26,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079967666] [2024-11-24 00:16:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079967666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680911190] [2024-11-24 00:16:26,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:26,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:26,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:16:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:27,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:16:27,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:28,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:16:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680911190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:16:29,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:16:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-24 00:16:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187194196] [2024-11-24 00:16:29,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:16:29,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:16:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:29,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:16:29,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:16:29,112 INFO L87 Difference]: Start difference. First operand 102067 states and 133398 transitions. Second operand has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 20 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:30,713 INFO L93 Difference]: Finished difference Result 182374 states and 239835 transitions. [2024-11-24 00:16:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:16:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 20 states have internal predecessors, (264), 0 states have call successors, (0), 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 103 [2024-11-24 00:16:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:30,926 INFO L225 Difference]: With dead ends: 182374 [2024-11-24 00:16:30,926 INFO L226 Difference]: Without dead ends: 156333 [2024-11-24 00:16:30,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=1174, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:16:30,980 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 928 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:30,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 905 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:16:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156333 states. [2024-11-24 00:16:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156333 to 103423. [2024-11-24 00:16:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103423 states, 103422 states have (on average 1.3077585039933477) internal successors, (135251), 103422 states have internal predecessors, (135251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103423 states to 103423 states and 135251 transitions. [2024-11-24 00:16:32,983 INFO L78 Accepts]: Start accepts. Automaton has 103423 states and 135251 transitions. Word has length 103 [2024-11-24 00:16:32,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:32,983 INFO L471 AbstractCegarLoop]: Abstraction has 103423 states and 135251 transitions. [2024-11-24 00:16:32,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.571428571428571) internal successors, (264), 20 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 103423 states and 135251 transitions. [2024-11-24 00:16:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:16:32,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:32,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:33,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:16:33,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:16:33,195 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:33,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1362288286, now seen corresponding path program 1 times [2024-11-24 00:16:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864907210] [2024-11-24 00:16:33,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:33,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:33,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864907210] [2024-11-24 00:16:33,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864907210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:16:33,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:16:33,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:16:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331337540] [2024-11-24 00:16:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:16:33,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:16:33,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:33,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:16:33,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:33,698 INFO L87 Difference]: Start difference. First operand 103423 states and 135251 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:34,513 INFO L93 Difference]: Finished difference Result 206736 states and 270385 transitions. [2024-11-24 00:16:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:16:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-11-24 00:16:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:34,705 INFO L225 Difference]: With dead ends: 206736 [2024-11-24 00:16:34,705 INFO L226 Difference]: Without dead ends: 103425 [2024-11-24 00:16:34,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:34,776 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:34,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:16:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103425 states. [2024-11-24 00:16:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103425 to 99535. [2024-11-24 00:16:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99535 states, 99534 states have (on average 1.277864850201941) internal successors, (127191), 99534 states have internal predecessors, (127191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99535 states to 99535 states and 127191 transitions. [2024-11-24 00:16:37,041 INFO L78 Accepts]: Start accepts. Automaton has 99535 states and 127191 transitions. Word has length 103 [2024-11-24 00:16:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:37,041 INFO L471 AbstractCegarLoop]: Abstraction has 99535 states and 127191 transitions. [2024-11-24 00:16:37,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 99535 states and 127191 transitions. [2024-11-24 00:16:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:16:37,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:37,045 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:37,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 00:16:37,046 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:37,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash 892045564, now seen corresponding path program 1 times [2024-11-24 00:16:37,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066208806] [2024-11-24 00:16:37,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 00:16:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:37,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066208806] [2024-11-24 00:16:37,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066208806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:16:37,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:16:37,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:16:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009342042] [2024-11-24 00:16:37,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:16:37,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:16:37,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:37,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:16:37,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:37,122 INFO L87 Difference]: Start difference. First operand 99535 states and 127191 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2024-11-24 00:16:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:37,699 INFO L93 Difference]: Finished difference Result 169513 states and 216638 transitions. [2024-11-24 00:16:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:16:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 103 [2024-11-24 00:16:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:37,785 INFO L225 Difference]: With dead ends: 169513 [2024-11-24 00:16:37,785 INFO L226 Difference]: Without dead ends: 70090 [2024-11-24 00:16:37,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:37,829 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 80 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:37,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 118 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:16:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70090 states. [2024-11-24 00:16:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70090 to 70090. [2024-11-24 00:16:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70090 states, 70089 states have (on average 1.2529212857937764) internal successors, (87816), 70089 states have internal predecessors, (87816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70090 states to 70090 states and 87816 transitions. [2024-11-24 00:16:39,643 INFO L78 Accepts]: Start accepts. Automaton has 70090 states and 87816 transitions. Word has length 103 [2024-11-24 00:16:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:39,643 INFO L471 AbstractCegarLoop]: Abstraction has 70090 states and 87816 transitions. [2024-11-24 00:16:39,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2024-11-24 00:16:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 70090 states and 87816 transitions. [2024-11-24 00:16:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:16:39,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:39,646 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:39,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 00:16:39,647 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:39,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 994530446, now seen corresponding path program 1 times [2024-11-24 00:16:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474129270] [2024-11-24 00:16:39,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:16:39,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:39,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474129270] [2024-11-24 00:16:39,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474129270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:16:39,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:16:39,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:16:39,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157584685] [2024-11-24 00:16:39,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:16:39,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:16:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:39,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:16:39,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:39,712 INFO L87 Difference]: Start difference. First operand 70090 states and 87816 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2024-11-24 00:16:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:40,081 INFO L93 Difference]: Finished difference Result 126821 states and 159088 transitions. [2024-11-24 00:16:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:16:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 104 [2024-11-24 00:16:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:40,139 INFO L225 Difference]: With dead ends: 126821 [2024-11-24 00:16:40,140 INFO L226 Difference]: Without dead ends: 56843 [2024-11-24 00:16:40,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:16:40,168 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 79 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:40,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 132 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:16:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56843 states. [2024-11-24 00:16:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56843 to 56843. [2024-11-24 00:16:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56843 states, 56842 states have (on average 1.2337004327785792) internal successors, (70126), 56842 states have internal predecessors, (70126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56843 states to 56843 states and 70126 transitions. [2024-11-24 00:16:41,045 INFO L78 Accepts]: Start accepts. Automaton has 56843 states and 70126 transitions. Word has length 104 [2024-11-24 00:16:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:41,045 INFO L471 AbstractCegarLoop]: Abstraction has 56843 states and 70126 transitions. [2024-11-24 00:16:41,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2024-11-24 00:16:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 56843 states and 70126 transitions. [2024-11-24 00:16:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:16:41,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:41,047 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:41,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 00:16:41,048 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:41,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1262740939, now seen corresponding path program 1 times [2024-11-24 00:16:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543097407] [2024-11-24 00:16:41,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543097407] [2024-11-24 00:16:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543097407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637788142] [2024-11-24 00:16:42,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:42,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:42,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:42,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:42,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:16:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:42,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:16:42,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:16:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:44,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:16:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637788142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:16:46,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:16:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 15] total 50 [2024-11-24 00:16:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243937350] [2024-11-24 00:16:46,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:16:46,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-24 00:16:46,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:16:46,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-24 00:16:46,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2268, Unknown=0, NotChecked=0, Total=2450 [2024-11-24 00:16:46,490 INFO L87 Difference]: Start difference. First operand 56843 states and 70126 transitions. Second operand has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:16:56,176 INFO L93 Difference]: Finished difference Result 189085 states and 233615 transitions. [2024-11-24 00:16:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-24 00:16:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 0 states have call successors, (0), 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 104 [2024-11-24 00:16:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:16:56,340 INFO L225 Difference]: With dead ends: 189085 [2024-11-24 00:16:56,340 INFO L226 Difference]: Without dead ends: 139315 [2024-11-24 00:16:56,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3720 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1836, Invalid=14420, Unknown=0, NotChecked=0, Total=16256 [2024-11-24 00:16:56,388 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 2544 mSDsluCounter, 8718 mSDsCounter, 0 mSdLazyCounter, 4740 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2544 SdHoareTripleChecker+Valid, 9018 SdHoareTripleChecker+Invalid, 4774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:16:56,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2544 Valid, 9018 Invalid, 4774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 4740 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 00:16:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139315 states. [2024-11-24 00:16:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139315 to 89330. [2024-11-24 00:16:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89330 states, 89329 states have (on average 1.2339553784325359) internal successors, (110228), 89329 states have internal predecessors, (110228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89330 states to 89330 states and 110228 transitions. [2024-11-24 00:16:58,156 INFO L78 Accepts]: Start accepts. Automaton has 89330 states and 110228 transitions. Word has length 104 [2024-11-24 00:16:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:16:58,157 INFO L471 AbstractCegarLoop]: Abstraction has 89330 states and 110228 transitions. [2024-11-24 00:16:58,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.48) internal successors, (274), 50 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:16:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 89330 states and 110228 transitions. [2024-11-24 00:16:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:16:58,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:16:58,159 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:16:58,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:16:58,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 00:16:58,360 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:16:58,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:16:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1790700788, now seen corresponding path program 1 times [2024-11-24 00:16:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:16:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456692099] [2024-11-24 00:16:58,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:16:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:16:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:16:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456692099] [2024-11-24 00:16:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456692099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:16:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971279493] [2024-11-24 00:16:59,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:16:59,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:16:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:16:59,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:16:59,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:16:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:16:59,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:16:59,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:01,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971279493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:02,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:02,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 14] total 46 [2024-11-24 00:17:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141039572] [2024-11-24 00:17:02,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:02,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-24 00:17:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:02,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-24 00:17:02,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1912, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 00:17:02,499 INFO L87 Difference]: Start difference. First operand 89330 states and 110228 transitions. Second operand has 46 states, 46 states have (on average 6.217391304347826) internal successors, (286), 46 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) [2024-11-24 00:17:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:12,901 INFO L93 Difference]: Finished difference Result 155128 states and 191427 transitions. [2024-11-24 00:17:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-24 00:17:12,902 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.217391304347826) internal successors, (286), 46 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 104 [2024-11-24 00:17:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:13,201 INFO L225 Difference]: With dead ends: 155128 [2024-11-24 00:17:13,201 INFO L226 Difference]: Without dead ends: 101714 [2024-11-24 00:17:13,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4262 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2606, Invalid=15754, Unknown=0, NotChecked=0, Total=18360 [2024-11-24 00:17:13,225 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 2257 mSDsluCounter, 6420 mSDsCounter, 0 mSdLazyCounter, 3533 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 6698 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:13,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 6698 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3533 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:17:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101714 states. [2024-11-24 00:17:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101714 to 81341. [2024-11-24 00:17:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81341 states, 81340 states have (on average 1.2300098352594049) internal successors, (100049), 81340 states have internal predecessors, (100049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81341 states to 81341 states and 100049 transitions. [2024-11-24 00:17:14,697 INFO L78 Accepts]: Start accepts. Automaton has 81341 states and 100049 transitions. Word has length 104 [2024-11-24 00:17:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:14,698 INFO L471 AbstractCegarLoop]: Abstraction has 81341 states and 100049 transitions. [2024-11-24 00:17:14,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.217391304347826) internal successors, (286), 46 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) [2024-11-24 00:17:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 81341 states and 100049 transitions. [2024-11-24 00:17:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:17:14,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:14,702 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:14,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:17:14,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 00:17:14,903 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:14,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1757508947, now seen corresponding path program 1 times [2024-11-24 00:17:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958497362] [2024-11-24 00:17:14,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:14,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958497362] [2024-11-24 00:17:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958497362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372069621] [2024-11-24 00:17:15,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:15,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:15,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:17:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:16,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:17:16,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:17,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372069621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:18,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:18,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 38 [2024-11-24 00:17:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070584756] [2024-11-24 00:17:18,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:18,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 00:17:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:18,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 00:17:18,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:17:18,957 INFO L87 Difference]: Start difference. First operand 81341 states and 100049 transitions. Second operand has 38 states, 38 states have (on average 7.815789473684211) internal successors, (297), 38 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:35,825 INFO L93 Difference]: Finished difference Result 185242 states and 226772 transitions. [2024-11-24 00:17:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-24 00:17:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.815789473684211) internal successors, (297), 38 states have internal predecessors, (297), 0 states have call successors, (0), 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 104 [2024-11-24 00:17:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:35,948 INFO L225 Difference]: With dead ends: 185242 [2024-11-24 00:17:35,948 INFO L226 Difference]: Without dead ends: 134823 [2024-11-24 00:17:35,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9480 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=4084, Invalid=25672, Unknown=0, NotChecked=0, Total=29756 [2024-11-24 00:17:35,983 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 2786 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 6786 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 6851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 6786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:35,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 4701 Invalid, 6851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 6786 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-24 00:17:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134823 states. [2024-11-24 00:17:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134823 to 73306. [2024-11-24 00:17:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73306 states, 73305 states have (on average 1.2202305436191256) internal successors, (89449), 73305 states have internal predecessors, (89449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73306 states to 73306 states and 89449 transitions. [2024-11-24 00:17:37,418 INFO L78 Accepts]: Start accepts. Automaton has 73306 states and 89449 transitions. Word has length 104 [2024-11-24 00:17:37,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:37,418 INFO L471 AbstractCegarLoop]: Abstraction has 73306 states and 89449 transitions. [2024-11-24 00:17:37,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.815789473684211) internal successors, (297), 38 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 73306 states and 89449 transitions. [2024-11-24 00:17:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:17:37,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:37,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:37,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:37,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 00:17:37,622 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:37,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1954021763, now seen corresponding path program 1 times [2024-11-24 00:17:37,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:37,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379840679] [2024-11-24 00:17:37,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:37,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379840679] [2024-11-24 00:17:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379840679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249794756] [2024-11-24 00:17:39,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:39,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:39,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:17:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:39,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:17:39,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:41,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249794756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:43,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:43,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 14] total 51 [2024-11-24 00:17:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148172238] [2024-11-24 00:17:43,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:43,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 00:17:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:43,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 00:17:43,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 00:17:43,190 INFO L87 Difference]: Start difference. First operand 73306 states and 89449 transitions. Second operand has 51 states, 51 states have (on average 5.568627450980392) internal successors, (284), 51 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:53,020 INFO L93 Difference]: Finished difference Result 104869 states and 128047 transitions. [2024-11-24 00:17:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-24 00:17:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.568627450980392) internal successors, (284), 51 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 00:17:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:53,092 INFO L225 Difference]: With dead ends: 104869 [2024-11-24 00:17:53,093 INFO L226 Difference]: Without dead ends: 87352 [2024-11-24 00:17:53,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1662, Invalid=9894, Unknown=0, NotChecked=0, Total=11556 [2024-11-24 00:17:53,105 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 4055 mSDsluCounter, 7906 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 8214 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:53,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 8214 Invalid, 3978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3941 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:17:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87352 states. [2024-11-24 00:17:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87352 to 79979. [2024-11-24 00:17:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79979 states, 79978 states have (on average 1.2187101452899547) internal successors, (97470), 79978 states have internal predecessors, (97470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79979 states to 79979 states and 97470 transitions. [2024-11-24 00:17:53,920 INFO L78 Accepts]: Start accepts. Automaton has 79979 states and 97470 transitions. Word has length 105 [2024-11-24 00:17:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:53,921 INFO L471 AbstractCegarLoop]: Abstraction has 79979 states and 97470 transitions. [2024-11-24 00:17:53,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.568627450980392) internal successors, (284), 51 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 79979 states and 97470 transitions. [2024-11-24 00:17:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:17:53,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:53,923 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:53,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:17:54,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:54,124 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:54,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -26883123, now seen corresponding path program 1 times [2024-11-24 00:17:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581628524] [2024-11-24 00:17:54,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581628524] [2024-11-24 00:17:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581628524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281153041] [2024-11-24 00:17:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:54,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:54,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:54,213 INFO L87 Difference]: Start difference. First operand 79979 states and 97470 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 00:17:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:54,499 INFO L93 Difference]: Finished difference Result 115503 states and 140757 transitions. [2024-11-24 00:17:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:54,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 105 [2024-11-24 00:17:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:54,846 INFO L225 Difference]: With dead ends: 115503 [2024-11-24 00:17:54,846 INFO L226 Difference]: Without dead ends: 35718 [2024-11-24 00:17:54,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:54,868 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 44 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:54,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 212 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35718 states. [2024-11-24 00:17:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35718 to 33466. [2024-11-24 00:17:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33466 states, 33465 states have (on average 1.196294636187061) internal successors, (40034), 33465 states have internal predecessors, (40034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33466 states to 33466 states and 40034 transitions. [2024-11-24 00:17:55,273 INFO L78 Accepts]: Start accepts. Automaton has 33466 states and 40034 transitions. Word has length 105 [2024-11-24 00:17:55,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:55,273 INFO L471 AbstractCegarLoop]: Abstraction has 33466 states and 40034 transitions. [2024-11-24 00:17:55,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 00:17:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33466 states and 40034 transitions. [2024-11-24 00:17:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:17:55,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:55,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:55,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-24 00:17:55,277 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:55,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1388502445, now seen corresponding path program 1 times [2024-11-24 00:17:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:55,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597563046] [2024-11-24 00:17:55,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:55,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 00:17:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597563046] [2024-11-24 00:17:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597563046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880577324] [2024-11-24 00:17:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:55,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:55,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:55,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:55,329 INFO L87 Difference]: Start difference. First operand 33466 states and 40034 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:55,490 INFO L93 Difference]: Finished difference Result 56598 states and 67890 transitions. [2024-11-24 00:17:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:55,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 00:17:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:55,511 INFO L225 Difference]: With dead ends: 56598 [2024-11-24 00:17:55,511 INFO L226 Difference]: Without dead ends: 23406 [2024-11-24 00:17:55,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:55,525 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 75 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:55,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 96 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23406 states. [2024-11-24 00:17:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23406 to 23406. [2024-11-24 00:17:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23406 states, 23405 states have (on average 1.178765221106601) internal successors, (27589), 23405 states have internal predecessors, (27589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23406 states to 23406 states and 27589 transitions. [2024-11-24 00:17:55,942 INFO L78 Accepts]: Start accepts. Automaton has 23406 states and 27589 transitions. Word has length 105 [2024-11-24 00:17:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:55,942 INFO L471 AbstractCegarLoop]: Abstraction has 23406 states and 27589 transitions. [2024-11-24 00:17:55,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 23406 states and 27589 transitions. [2024-11-24 00:17:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:17:55,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:55,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:55,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 00:17:55,944 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:55,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1882751161, now seen corresponding path program 1 times [2024-11-24 00:17:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986677843] [2024-11-24 00:17:55,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:56,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986677843] [2024-11-24 00:17:56,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986677843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916825527] [2024-11-24 00:17:56,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:56,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:56,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:56,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:17:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:56,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:17:56,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:58,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916825527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:59,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 38 [2024-11-24 00:17:59,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706134607] [2024-11-24 00:17:59,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:59,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 00:17:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:59,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 00:17:59,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:17:59,475 INFO L87 Difference]: Start difference. First operand 23406 states and 27589 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) [2024-11-24 00:18:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:01,120 INFO L93 Difference]: Finished difference Result 36699 states and 43532 transitions. [2024-11-24 00:18:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 00:18:01,121 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 105 [2024-11-24 00:18:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:01,152 INFO L225 Difference]: With dead ends: 36699 [2024-11-24 00:18:01,152 INFO L226 Difference]: Without dead ends: 29198 [2024-11-24 00:18:01,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=356, Invalid=2194, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 00:18:01,162 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 741 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:01,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 3811 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:18:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29198 states. [2024-11-24 00:18:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29198 to 26002. [2024-11-24 00:18:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26002 states, 26001 states have (on average 1.1773777931618015) internal successors, (30613), 26001 states have internal predecessors, (30613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26002 states to 26002 states and 30613 transitions. [2024-11-24 00:18:01,554 INFO L78 Accepts]: Start accepts. Automaton has 26002 states and 30613 transitions. Word has length 105 [2024-11-24 00:18:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:01,555 INFO L471 AbstractCegarLoop]: Abstraction has 26002 states and 30613 transitions. [2024-11-24 00:18:01,555 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) [2024-11-24 00:18:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 26002 states and 30613 transitions. [2024-11-24 00:18:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:18:01,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:01,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:01,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:18:01,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 00:18:01,757 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:01,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -150515526, now seen corresponding path program 1 times [2024-11-24 00:18:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:01,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621598505] [2024-11-24 00:18:01,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621598505] [2024-11-24 00:18:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621598505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401225350] [2024-11-24 00:18:02,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:02,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:02,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:18:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:02,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:18:02,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:03,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:03,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401225350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:03,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2024-11-24 00:18:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906920381] [2024-11-24 00:18:03,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:03,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 00:18:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:03,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 00:18:03,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:18:03,928 INFO L87 Difference]: Start difference. First operand 26002 states and 30613 transitions. Second operand has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:05,073 INFO L93 Difference]: Finished difference Result 45428 states and 53680 transitions. [2024-11-24 00:18:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:18:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 00:18:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:05,100 INFO L225 Difference]: With dead ends: 45428 [2024-11-24 00:18:05,100 INFO L226 Difference]: Without dead ends: 29470 [2024-11-24 00:18:05,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1051, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:18:05,110 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 563 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:05,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1108 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:18:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29470 states. [2024-11-24 00:18:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29470 to 26906. [2024-11-24 00:18:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26906 states, 26905 states have (on average 1.1789630180263893) internal successors, (31720), 26905 states have internal predecessors, (31720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26906 states to 26906 states and 31720 transitions. [2024-11-24 00:18:05,356 INFO L78 Accepts]: Start accepts. Automaton has 26906 states and 31720 transitions. Word has length 105 [2024-11-24 00:18:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:05,356 INFO L471 AbstractCegarLoop]: Abstraction has 26906 states and 31720 transitions. [2024-11-24 00:18:05,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 26906 states and 31720 transitions. [2024-11-24 00:18:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:18:05,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:05,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:05,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:18:05,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:18:05,559 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:05,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -528362802, now seen corresponding path program 1 times [2024-11-24 00:18:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843910827] [2024-11-24 00:18:05,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843910827] [2024-11-24 00:18:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843910827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918711154] [2024-11-24 00:18:06,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:06,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:06,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:18:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:06,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 00:18:06,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:09,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:13,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918711154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:13,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:13,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 22] total 57 [2024-11-24 00:18:13,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162948405] [2024-11-24 00:18:13,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:13,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 00:18:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:13,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 00:18:13,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2832, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 00:18:13,142 INFO L87 Difference]: Start difference. First operand 26906 states and 31720 transitions. Second operand has 57 states, 57 states have (on average 4.771929824561403) internal successors, (272), 57 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:30,164 INFO L93 Difference]: Finished difference Result 41516 states and 49035 transitions. [2024-11-24 00:18:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-24 00:18:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.771929824561403) internal successors, (272), 57 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 00:18:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:30,211 INFO L225 Difference]: With dead ends: 41516 [2024-11-24 00:18:30,212 INFO L226 Difference]: Without dead ends: 33448 [2024-11-24 00:18:30,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7545 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=2918, Invalid=21574, Unknown=0, NotChecked=0, Total=24492 [2024-11-24 00:18:30,225 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 2545 mSDsluCounter, 8117 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 8407 SdHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:30,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 8407 Invalid, 5176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 5133 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 00:18:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33448 states. [2024-11-24 00:18:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33448 to 25575. [2024-11-24 00:18:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25575 states, 25574 states have (on average 1.1798310784390396) internal successors, (30173), 25574 states have internal predecessors, (30173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25575 states to 25575 states and 30173 transitions. [2024-11-24 00:18:30,545 INFO L78 Accepts]: Start accepts. Automaton has 25575 states and 30173 transitions. Word has length 105 [2024-11-24 00:18:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:30,545 INFO L471 AbstractCegarLoop]: Abstraction has 25575 states and 30173 transitions. [2024-11-24 00:18:30,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.771929824561403) internal successors, (272), 57 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 25575 states and 30173 transitions. [2024-11-24 00:18:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:18:30,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:30,546 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:30,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:18:30,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:18:30,747 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:30,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1292346169, now seen corresponding path program 1 times [2024-11-24 00:18:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433119058] [2024-11-24 00:18:30,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433119058] [2024-11-24 00:18:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433119058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486553398] [2024-11-24 00:18:31,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:31,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:31,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:18:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:31,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:18:31,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:32,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486553398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:33,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 34 [2024-11-24 00:18:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632657568] [2024-11-24 00:18:33,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:33,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:18:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:33,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:18:33,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:18:33,422 INFO L87 Difference]: Start difference. First operand 25575 states and 30173 transitions. Second operand has 34 states, 34 states have (on average 8.088235294117647) internal successors, (275), 34 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) [2024-11-24 00:18:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:35,883 INFO L93 Difference]: Finished difference Result 29156 states and 34431 transitions. [2024-11-24 00:18:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 00:18:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.088235294117647) internal successors, (275), 34 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 105 [2024-11-24 00:18:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:35,899 INFO L225 Difference]: With dead ends: 29156 [2024-11-24 00:18:35,900 INFO L226 Difference]: Without dead ends: 20097 [2024-11-24 00:18:35,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=393, Invalid=3767, Unknown=0, NotChecked=0, Total=4160 [2024-11-24 00:18:35,906 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 670 mSDsluCounter, 5791 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:35,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 6036 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 00:18:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20097 states. [2024-11-24 00:18:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20097 to 19879. [2024-11-24 00:18:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19879 states, 19878 states have (on average 1.1753697555086025) internal successors, (23364), 19878 states have internal predecessors, (23364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19879 states to 19879 states and 23364 transitions. [2024-11-24 00:18:36,085 INFO L78 Accepts]: Start accepts. Automaton has 19879 states and 23364 transitions. Word has length 105 [2024-11-24 00:18:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:36,085 INFO L471 AbstractCegarLoop]: Abstraction has 19879 states and 23364 transitions. [2024-11-24 00:18:36,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.088235294117647) internal successors, (275), 34 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) [2024-11-24 00:18:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 19879 states and 23364 transitions. [2024-11-24 00:18:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:18:36,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:36,087 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:36,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:36,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 00:18:36,287 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:36,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1976505579, now seen corresponding path program 1 times [2024-11-24 00:18:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132740730] [2024-11-24 00:18:36,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132740730] [2024-11-24 00:18:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132740730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:36,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555347705] [2024-11-24 00:18:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:36,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:36,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:36,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:36,357 INFO L87 Difference]: Start difference. First operand 19879 states and 23364 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:36,406 INFO L93 Difference]: Finished difference Result 24217 states and 28354 transitions. [2024-11-24 00:18:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-24 00:18:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:36,410 INFO L225 Difference]: With dead ends: 24217 [2024-11-24 00:18:36,410 INFO L226 Difference]: Without dead ends: 4825 [2024-11-24 00:18:36,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:36,416 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:36,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 194 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2024-11-24 00:18:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4823. [2024-11-24 00:18:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4822 states have (on average 1.1248444628784737) internal successors, (5424), 4822 states have internal predecessors, (5424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 5424 transitions. [2024-11-24 00:18:36,461 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 5424 transitions. Word has length 106 [2024-11-24 00:18:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:36,462 INFO L471 AbstractCegarLoop]: Abstraction has 4823 states and 5424 transitions. [2024-11-24 00:18:36,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 5424 transitions. [2024-11-24 00:18:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:18:36,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:36,463 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:36,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 00:18:36,463 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:36,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 384046205, now seen corresponding path program 1 times [2024-11-24 00:18:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459315046] [2024-11-24 00:18:36,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459315046] [2024-11-24 00:18:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459315046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229453141] [2024-11-24 00:18:37,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:37,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:37,429 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:37,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:18:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:37,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:18:37,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:40,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229453141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:44,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 58 [2024-11-24 00:18:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349945883] [2024-11-24 00:18:44,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:44,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-24 00:18:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:44,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-24 00:18:44,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2980, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 00:18:44,477 INFO L87 Difference]: Start difference. First operand 4823 states and 5424 transitions. Second operand has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 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) [2024-11-24 00:18:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:50,609 INFO L93 Difference]: Finished difference Result 6829 states and 7703 transitions. [2024-11-24 00:18:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-24 00:18:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 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 106 [2024-11-24 00:18:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:50,614 INFO L225 Difference]: With dead ends: 6829 [2024-11-24 00:18:50,614 INFO L226 Difference]: Without dead ends: 5221 [2024-11-24 00:18:50,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1240, Invalid=9890, Unknown=0, NotChecked=0, Total=11130 [2024-11-24 00:18:50,617 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 1413 mSDsluCounter, 4963 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:50,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 5181 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:18:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2024-11-24 00:18:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 4941. [2024-11-24 00:18:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 4940 states have (on average 1.1236842105263158) internal successors, (5551), 4940 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 5551 transitions. [2024-11-24 00:18:50,686 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 5551 transitions. Word has length 106 [2024-11-24 00:18:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:50,686 INFO L471 AbstractCegarLoop]: Abstraction has 4941 states and 5551 transitions. [2024-11-24 00:18:50,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.879310344827586) internal successors, (283), 58 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) [2024-11-24 00:18:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 5551 transitions. [2024-11-24 00:18:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:18:50,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:50,689 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:50,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:50,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-24 00:18:50,889 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:50,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1769850430, now seen corresponding path program 1 times [2024-11-24 00:18:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:50,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425755083] [2024-11-24 00:18:50,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:50,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425755083] [2024-11-24 00:18:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425755083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803883693] [2024-11-24 00:18:53,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:53,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:53,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beedf85b-fa73-448b-b9db-629021048426/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:18:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-24 00:18:53,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:59,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803883693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:08,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 29] total 82 [2024-11-24 00:19:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890857336] [2024-11-24 00:19:08,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:08,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-24 00:19:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:08,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-24 00:19:08,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=6153, Unknown=0, NotChecked=0, Total=6642 [2024-11-24 00:19:08,124 INFO L87 Difference]: Start difference. First operand 4941 states and 5551 transitions. Second operand has 82 states, 82 states have (on average 3.548780487804878) internal successors, (291), 82 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)