./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/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_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/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 64bit --witnessprinter.graph.data.programhash 0dd8fe71e3b230e27e0bcdd5294ae2e199a80395a1a4486d14620d239c5fffeb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:45:00,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:45:00,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:45:00,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:45:00,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:45:00,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:45:00,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:45:00,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:45:00,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:45:00,907 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:45:00,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:45:00,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:45:00,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:45:00,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:45:00,908 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:45:00,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:45:00,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:45:00,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:45:00,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:45:00,909 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:45:00,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:45:00,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:45:00,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:45:00,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:45:00,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:45:00,911 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_60114a30-a03a-4078-8495-4e1a12b2f0db/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dd8fe71e3b230e27e0bcdd5294ae2e199a80395a1a4486d14620d239c5fffeb [2024-11-24 01:45:01,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:45:01,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:45:01,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:45:01,234 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:45:01,235 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:45:01,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2024-11-24 01:45:04,319 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/data/e9e9ed470/b6d20b73dd9345808f1be851c9c5a2aa/FLAGbb970371b [2024-11-24 01:45:04,708 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:45:04,709 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c [2024-11-24 01:45:04,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/data/e9e9ed470/b6d20b73dd9345808f1be851c9c5a2aa/FLAGbb970371b [2024-11-24 01:45:04,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/data/e9e9ed470/b6d20b73dd9345808f1be851c9c5a2aa [2024-11-24 01:45:04,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:45:04,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:45:04,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:45:04,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:45:04,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:45:04,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:45:04" (1/1) ... [2024-11-24 01:45:04,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18088efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:04, skipping insertion in model container [2024-11-24 01:45:04,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:45:04" (1/1) ... [2024-11-24 01:45:04,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:45:04,993 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_60114a30-a03a-4078-8495-4e1a12b2f0db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1253,1266] [2024-11-24 01:45:05,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:45:05,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:45:05,378 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_60114a30-a03a-4078-8495-4e1a12b2f0db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_2.c[1253,1266] [2024-11-24 01:45:05,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:45:05,496 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:45:05,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05 WrapperNode [2024-11-24 01:45:05,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:45:05,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:45:05,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:45:05,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:45:05,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:05,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:05,769 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1589 [2024-11-24 01:45:05,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:45:05,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:45:05,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:45:05,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:45:05,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:05,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:05,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,008 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 01:45:06,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:45:06,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:45:06,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:45:06,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:45:06,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (1/1) ... [2024-11-24 01:45:06,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:45:06,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:45:06,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:45:06,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:45:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:45:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:45:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:45:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:45:06,648 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:45:06,650 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:45:09,435 INFO L? ?]: Removed 997 outVars from TransFormulas that were not future-live. [2024-11-24 01:45:09,436 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:45:09,477 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:45:09,478 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:45:09,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:45:09 BoogieIcfgContainer [2024-11-24 01:45:09,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:45:09,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:45:09,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:45:09,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:45:09,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:45:04" (1/3) ... [2024-11-24 01:45:09,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e35a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:45:09, skipping insertion in model container [2024-11-24 01:45:09,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:45:05" (2/3) ... [2024-11-24 01:45:09,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e35a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:45:09, skipping insertion in model container [2024-11-24 01:45:09,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:45:09" (3/3) ... [2024-11-24 01:45:09,491 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_2.c [2024-11-24 01:45:09,511 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:45:09,513 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.sw_ball2004_2.c that has 1 procedures, 478 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:45:09,614 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:45:09,635 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;@25ae1825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:45:09,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:45:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 476 states have (on average 1.4978991596638656) internal successors, (713), 477 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 01:45:09,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:09,655 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] [2024-11-24 01:45:09,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:09,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1453068393, now seen corresponding path program 1 times [2024-11-24 01:45:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754193473] [2024-11-24 01:45:09,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:10,722 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 01:45:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754193473] [2024-11-24 01:45:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754193473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:10,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:45:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887776203] [2024-11-24 01:45:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:45:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:10,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:45:10,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:45:10,766 INFO L87 Difference]: Start difference. First operand has 478 states, 476 states have (on average 1.4978991596638656) internal successors, (713), 477 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:10,988 INFO L93 Difference]: Finished difference Result 889 states and 1329 transitions. [2024-11-24 01:45:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:45:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-24 01:45:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:11,008 INFO L225 Difference]: With dead ends: 889 [2024-11-24 01:45:11,008 INFO L226 Difference]: Without dead ends: 477 [2024-11-24 01:45:11,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:45:11,016 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 0 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:11,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2115 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:45:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-24 01:45:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2024-11-24 01:45:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.4936974789915967) internal successors, (711), 476 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 01:45:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 711 transitions. [2024-11-24 01:45:11,097 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 711 transitions. Word has length 41 [2024-11-24 01:45:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:11,101 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 711 transitions. [2024-11-24 01:45:11,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 711 transitions. [2024-11-24 01:45:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-24 01:45:11,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:11,103 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] [2024-11-24 01:45:11,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:45:11,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:11,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2097142610, now seen corresponding path program 1 times [2024-11-24 01:45:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211897273] [2024-11-24 01:45:11,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:11,415 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 01:45:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211897273] [2024-11-24 01:45:11,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211897273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:11,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:11,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:45:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257063937] [2024-11-24 01:45:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:11,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:45:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:11,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:45:11,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:45:11,420 INFO L87 Difference]: Start difference. First operand 477 states and 711 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:11,517 INFO L93 Difference]: Finished difference Result 890 states and 1327 transitions. [2024-11-24 01:45:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:45:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-24 01:45:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:11,521 INFO L225 Difference]: With dead ends: 890 [2024-11-24 01:45:11,521 INFO L226 Difference]: Without dead ends: 479 [2024-11-24 01:45:11,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:45:11,525 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 0 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:11,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:45:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-24 01:45:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-24 01:45:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.49163179916318) internal successors, (713), 478 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 713 transitions. [2024-11-24 01:45:11,559 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 713 transitions. Word has length 42 [2024-11-24 01:45:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:11,559 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 713 transitions. [2024-11-24 01:45:11,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 713 transitions. [2024-11-24 01:45:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-24 01:45:11,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:11,561 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] [2024-11-24 01:45:11,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:45:11,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:11,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash -511054238, now seen corresponding path program 1 times [2024-11-24 01:45:11,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:11,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679570394] [2024-11-24 01:45:11,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:11,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:11,930 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 01:45:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:11,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679570394] [2024-11-24 01:45:11,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679570394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:11,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:11,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665619566] [2024-11-24 01:45:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:11,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:11,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:11,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:11,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:11,933 INFO L87 Difference]: Start difference. First operand 479 states and 713 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:12,159 INFO L93 Difference]: Finished difference Result 1263 states and 1882 transitions. [2024-11-24 01:45:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:12,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-24 01:45:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:12,164 INFO L225 Difference]: With dead ends: 1263 [2024-11-24 01:45:12,164 INFO L226 Difference]: Without dead ends: 850 [2024-11-24 01:45:12,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:12,167 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 1781 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:12,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 2076 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-24 01:45:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 481. [2024-11-24 01:45:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4895833333333333) internal successors, (715), 480 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 01:45:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 715 transitions. [2024-11-24 01:45:12,185 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 715 transitions. Word has length 43 [2024-11-24 01:45:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:12,186 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 715 transitions. [2024-11-24 01:45:12,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 715 transitions. [2024-11-24 01:45:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-24 01:45:12,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:12,195 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:12,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:45:12,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:12,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:12,197 INFO L85 PathProgramCache]: Analyzing trace with hash -383665186, now seen corresponding path program 1 times [2024-11-24 01:45:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:12,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886237374] [2024-11-24 01:45:12,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886237374] [2024-11-24 01:45:16,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886237374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:16,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703605524] [2024-11-24 01:45:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:16,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:16,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:16,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:16,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:16,155 INFO L87 Difference]: Start difference. First operand 481 states and 715 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 01:45:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:16,381 INFO L93 Difference]: Finished difference Result 1251 states and 1863 transitions. [2024-11-24 01:45:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2024-11-24 01:45:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:16,386 INFO L225 Difference]: With dead ends: 1251 [2024-11-24 01:45:16,386 INFO L226 Difference]: Without dead ends: 838 [2024-11-24 01:45:16,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:16,388 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1703 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:16,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 2073 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-24 01:45:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 556. [2024-11-24 01:45:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.4846846846846846) internal successors, (824), 555 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 01:45:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 824 transitions. [2024-11-24 01:45:16,412 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 824 transitions. Word has length 248 [2024-11-24 01:45:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:16,413 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 824 transitions. [2024-11-24 01:45:16,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 01:45:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 824 transitions. [2024-11-24 01:45:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-24 01:45:16,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:16,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:16,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:45:16,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:16,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash -356656831, now seen corresponding path program 1 times [2024-11-24 01:45:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275994950] [2024-11-24 01:45:16,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275994950] [2024-11-24 01:45:20,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275994950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:20,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:20,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:20,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278180826] [2024-11-24 01:45:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:20,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:20,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:20,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:20,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:20,126 INFO L87 Difference]: Start difference. First operand 556 states and 824 transitions. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 01:45:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:20,310 INFO L93 Difference]: Finished difference Result 1251 states and 1861 transitions. [2024-11-24 01:45:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:20,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2024-11-24 01:45:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:20,316 INFO L225 Difference]: With dead ends: 1251 [2024-11-24 01:45:20,316 INFO L226 Difference]: Without dead ends: 838 [2024-11-24 01:45:20,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:20,319 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1665 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:20,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-24 01:45:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 623. [2024-11-24 01:45:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.4839228295819935) internal successors, (923), 622 states have internal predecessors, (923), 0 states have call successors, (0), 0 states 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 01:45:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 923 transitions. [2024-11-24 01:45:20,346 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 923 transitions. Word has length 250 [2024-11-24 01:45:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:20,346 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 923 transitions. [2024-11-24 01:45:20,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 01:45:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 923 transitions. [2024-11-24 01:45:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-24 01:45:20,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:20,352 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:20,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:45:20,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:20,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 255056225, now seen corresponding path program 1 times [2024-11-24 01:45:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146133470] [2024-11-24 01:45:20,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:23,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146133470] [2024-11-24 01:45:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146133470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132287797] [2024-11-24 01:45:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:23,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:23,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:23,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:23,231 INFO L87 Difference]: Start difference. First operand 623 states and 923 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 01:45:23,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:23,402 INFO L93 Difference]: Finished difference Result 1251 states and 1860 transitions. [2024-11-24 01:45:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2024-11-24 01:45:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:23,406 INFO L225 Difference]: With dead ends: 1251 [2024-11-24 01:45:23,407 INFO L226 Difference]: Without dead ends: 838 [2024-11-24 01:45:23,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:23,408 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1572 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:23,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-24 01:45:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 803. [2024-11-24 01:45:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.486284289276808) internal successors, (1192), 802 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 01:45:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1192 transitions. [2024-11-24 01:45:23,437 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1192 transitions. Word has length 251 [2024-11-24 01:45:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:23,437 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1192 transitions. [2024-11-24 01:45:23,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 01:45:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1192 transitions. [2024-11-24 01:45:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:45:23,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:23,442 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:23,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:45:23,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:23,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2122183140, now seen corresponding path program 1 times [2024-11-24 01:45:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684956889] [2024-11-24 01:45:23,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:25,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684956889] [2024-11-24 01:45:25,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684956889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:25,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:25,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627026204] [2024-11-24 01:45:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:25,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:25,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:25,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:25,642 INFO L87 Difference]: Start difference. First operand 803 states and 1192 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 01:45:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:25,835 INFO L93 Difference]: Finished difference Result 1393 states and 2071 transitions. [2024-11-24 01:45:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:25,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2024-11-24 01:45:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:25,841 INFO L225 Difference]: With dead ends: 1393 [2024-11-24 01:45:25,841 INFO L226 Difference]: Without dead ends: 838 [2024-11-24 01:45:25,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:25,843 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1642 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:25,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-24 01:45:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 803. [2024-11-24 01:45:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.4850374064837906) internal successors, (1191), 802 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 01:45:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1191 transitions. [2024-11-24 01:45:25,872 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1191 transitions. Word has length 252 [2024-11-24 01:45:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:25,872 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1191 transitions. [2024-11-24 01:45:25,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 01:45:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1191 transitions. [2024-11-24 01:45:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-24 01:45:25,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:25,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:25,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:45:25,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:25,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1217015235, now seen corresponding path program 1 times [2024-11-24 01:45:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465566241] [2024-11-24 01:45:25,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:28,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:28,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465566241] [2024-11-24 01:45:28,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465566241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:28,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:28,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:28,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510533032] [2024-11-24 01:45:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:28,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:28,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:28,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:28,625 INFO L87 Difference]: Start difference. First operand 803 states and 1191 transitions. Second operand has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:28,960 INFO L93 Difference]: Finished difference Result 1259 states and 1870 transitions. [2024-11-24 01:45:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:28,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-24 01:45:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:28,967 INFO L225 Difference]: With dead ends: 1259 [2024-11-24 01:45:28,967 INFO L226 Difference]: Without dead ends: 846 [2024-11-24 01:45:28,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:28,969 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1588 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:28,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 3435 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:45:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-24 01:45:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 806. [2024-11-24 01:45:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.484472049689441) internal successors, (1195), 805 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 01:45:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1195 transitions. [2024-11-24 01:45:28,996 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1195 transitions. Word has length 253 [2024-11-24 01:45:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:28,998 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1195 transitions. [2024-11-24 01:45:28,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:45:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1195 transitions. [2024-11-24 01:45:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-24 01:45:29,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:29,003 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:29,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:45:29,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:29,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1748225831, now seen corresponding path program 1 times [2024-11-24 01:45:29,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:29,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514099761] [2024-11-24 01:45:29,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514099761] [2024-11-24 01:45:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514099761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238934239] [2024-11-24 01:45:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:31,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:31,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:31,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:31,140 INFO L87 Difference]: Start difference. First operand 806 states and 1195 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 01:45:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:31,337 INFO L93 Difference]: Finished difference Result 1326 states and 1968 transitions. [2024-11-24 01:45:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2024-11-24 01:45:31,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:31,343 INFO L225 Difference]: With dead ends: 1326 [2024-11-24 01:45:31,346 INFO L226 Difference]: Without dead ends: 840 [2024-11-24 01:45:31,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:31,347 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1603 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:31,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-24 01:45:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 806. [2024-11-24 01:45:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.4832298136645963) internal successors, (1194), 805 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 01:45:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1194 transitions. [2024-11-24 01:45:31,380 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1194 transitions. Word has length 254 [2024-11-24 01:45:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:31,380 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1194 transitions. [2024-11-24 01:45:31,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 01:45:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1194 transitions. [2024-11-24 01:45:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-24 01:45:31,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:31,385 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:31,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:45:31,386 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:31,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1699695482, now seen corresponding path program 1 times [2024-11-24 01:45:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465256136] [2024-11-24 01:45:31,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465256136] [2024-11-24 01:45:33,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465256136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:33,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:33,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:33,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246242622] [2024-11-24 01:45:33,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:33,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:33,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:33,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:33,338 INFO L87 Difference]: Start difference. First operand 806 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 01:45:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:33,515 INFO L93 Difference]: Finished difference Result 1362 states and 2020 transitions. [2024-11-24 01:45:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2024-11-24 01:45:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:33,520 INFO L225 Difference]: With dead ends: 1362 [2024-11-24 01:45:33,520 INFO L226 Difference]: Without dead ends: 840 [2024-11-24 01:45:33,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:33,522 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1619 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:33,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-24 01:45:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 806. [2024-11-24 01:45:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.4819875776397515) internal successors, (1193), 805 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 01:45:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1193 transitions. [2024-11-24 01:45:33,546 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1193 transitions. Word has length 255 [2024-11-24 01:45:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:33,547 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1193 transitions. [2024-11-24 01:45:33,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 01:45:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1193 transitions. [2024-11-24 01:45:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-24 01:45:33,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:33,551 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:33,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:45:33,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:33,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -604709178, now seen corresponding path program 1 times [2024-11-24 01:45:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:33,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510968580] [2024-11-24 01:45:33,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510968580] [2024-11-24 01:45:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510968580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:35,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986865259] [2024-11-24 01:45:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:35,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:35,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:35,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:35,554 INFO L87 Difference]: Start difference. First operand 806 states and 1193 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 01:45:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:35,821 INFO L93 Difference]: Finished difference Result 1330 states and 1972 transitions. [2024-11-24 01:45:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-24 01:45:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:35,826 INFO L225 Difference]: With dead ends: 1330 [2024-11-24 01:45:35,826 INFO L226 Difference]: Without dead ends: 848 [2024-11-24 01:45:35,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:35,828 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1620 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:35,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 3093 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-24 01:45:35,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 808. [2024-11-24 01:45:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.4807930607187112) internal successors, (1195), 807 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 01:45:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1195 transitions. [2024-11-24 01:45:35,856 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1195 transitions. Word has length 256 [2024-11-24 01:45:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:35,857 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1195 transitions. [2024-11-24 01:45:35,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 01:45:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1195 transitions. [2024-11-24 01:45:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-24 01:45:35,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:35,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:35,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:45:35,862 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:35,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash -154979858, now seen corresponding path program 1 times [2024-11-24 01:45:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:35,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016870793] [2024-11-24 01:45:35,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016870793] [2024-11-24 01:45:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016870793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:37,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050295629] [2024-11-24 01:45:37,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:37,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:37,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:37,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:37,729 INFO L87 Difference]: Start difference. First operand 808 states and 1195 transitions. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 01:45:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:37,971 INFO L93 Difference]: Finished difference Result 1406 states and 2082 transitions. [2024-11-24 01:45:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2024-11-24 01:45:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:37,976 INFO L225 Difference]: With dead ends: 1406 [2024-11-24 01:45:37,977 INFO L226 Difference]: Without dead ends: 850 [2024-11-24 01:45:37,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:37,978 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1658 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:37,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 3093 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-24 01:45:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 810. [2024-11-24 01:45:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 1.4796044499381953) internal successors, (1197), 809 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states 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 01:45:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1197 transitions. [2024-11-24 01:45:38,028 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1197 transitions. Word has length 257 [2024-11-24 01:45:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:38,028 INFO L471 AbstractCegarLoop]: Abstraction has 810 states and 1197 transitions. [2024-11-24 01:45:38,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 01:45:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1197 transitions. [2024-11-24 01:45:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 01:45:38,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:38,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:38,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:45:38,034 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:38,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1399991450, now seen corresponding path program 1 times [2024-11-24 01:45:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101741188] [2024-11-24 01:45:38,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:39,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101741188] [2024-11-24 01:45:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101741188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918877277] [2024-11-24 01:45:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:39,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:39,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:39,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:39,801 INFO L87 Difference]: Start difference. First operand 810 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 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 01:45:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:40,053 INFO L93 Difference]: Finished difference Result 1372 states and 2031 transitions. [2024-11-24 01:45:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 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 258 [2024-11-24 01:45:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:40,057 INFO L225 Difference]: With dead ends: 1372 [2024-11-24 01:45:40,058 INFO L226 Difference]: Without dead ends: 852 [2024-11-24 01:45:40,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:40,059 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1637 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:40,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 3435 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-24 01:45:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 812. [2024-11-24 01:45:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 1.4784217016029593) internal successors, (1199), 811 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states 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 01:45:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1199 transitions. [2024-11-24 01:45:40,083 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1199 transitions. Word has length 258 [2024-11-24 01:45:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:40,083 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1199 transitions. [2024-11-24 01:45:40,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 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 01:45:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1199 transitions. [2024-11-24 01:45:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-24 01:45:40,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:40,088 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:40,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:45:40,089 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:40,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -429401763, now seen corresponding path program 1 times [2024-11-24 01:45:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248891426] [2024-11-24 01:45:40,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:42,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248891426] [2024-11-24 01:45:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248891426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:42,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:42,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750437064] [2024-11-24 01:45:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:42,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:42,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:42,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:42,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:42,322 INFO L87 Difference]: Start difference. First operand 812 states and 1199 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:42,558 INFO L93 Difference]: Finished difference Result 1374 states and 2033 transitions. [2024-11-24 01:45:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:42,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-24 01:45:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:42,563 INFO L225 Difference]: With dead ends: 1374 [2024-11-24 01:45:42,563 INFO L226 Difference]: Without dead ends: 858 [2024-11-24 01:45:42,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:42,565 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1647 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:42,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 3103 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-24 01:45:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 814. [2024-11-24 01:45:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4772447724477245) internal successors, (1201), 813 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 01:45:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1201 transitions. [2024-11-24 01:45:42,592 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1201 transitions. Word has length 259 [2024-11-24 01:45:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:42,592 INFO L471 AbstractCegarLoop]: Abstraction has 814 states and 1201 transitions. [2024-11-24 01:45:42,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1201 transitions. [2024-11-24 01:45:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-24 01:45:42,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:42,597 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:42,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:45:42,597 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:42,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1146089991, now seen corresponding path program 1 times [2024-11-24 01:45:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184593396] [2024-11-24 01:45:42,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184593396] [2024-11-24 01:45:44,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184593396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:44,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:44,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781800926] [2024-11-24 01:45:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:44,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:44,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:44,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:44,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:44,119 INFO L87 Difference]: Start difference. First operand 814 states and 1201 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:44,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:44,347 INFO L93 Difference]: Finished difference Result 1338 states and 1980 transitions. [2024-11-24 01:45:44,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:44,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-24 01:45:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:44,352 INFO L225 Difference]: With dead ends: 1338 [2024-11-24 01:45:44,353 INFO L226 Difference]: Without dead ends: 860 [2024-11-24 01:45:44,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:44,354 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1627 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:44,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 3103 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-24 01:45:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 816. [2024-11-24 01:45:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 1.4760736196319018) internal successors, (1203), 815 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 01:45:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1203 transitions. [2024-11-24 01:45:44,379 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1203 transitions. Word has length 259 [2024-11-24 01:45:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:44,380 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1203 transitions. [2024-11-24 01:45:44,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1203 transitions. [2024-11-24 01:45:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-24 01:45:44,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:44,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:44,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:45:44,385 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:44,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1349277547, now seen corresponding path program 1 times [2024-11-24 01:45:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:44,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994294248] [2024-11-24 01:45:44,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:46,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994294248] [2024-11-24 01:45:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994294248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:46,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:46,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38187342] [2024-11-24 01:45:46,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:46,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:46,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:46,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:46,019 INFO L87 Difference]: Start difference. First operand 816 states and 1203 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:46,145 INFO L93 Difference]: Finished difference Result 1300 states and 1922 transitions. [2024-11-24 01:45:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-24 01:45:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:46,150 INFO L225 Difference]: With dead ends: 1300 [2024-11-24 01:45:46,150 INFO L226 Difference]: Without dead ends: 850 [2024-11-24 01:45:46,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:46,151 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1576 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:46,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 2072 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-24 01:45:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 816. [2024-11-24 01:45:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 1.474846625766871) internal successors, (1202), 815 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 01:45:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1202 transitions. [2024-11-24 01:45:46,172 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1202 transitions. Word has length 259 [2024-11-24 01:45:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:46,174 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1202 transitions. [2024-11-24 01:45:46,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 01:45:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1202 transitions. [2024-11-24 01:45:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-24 01:45:46,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:46,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:46,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:45:46,179 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:46,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1510778313, now seen corresponding path program 1 times [2024-11-24 01:45:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:46,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864821793] [2024-11-24 01:45:46,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:46,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864821793] [2024-11-24 01:45:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864821793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:47,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793372250] [2024-11-24 01:45:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:47,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:47,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:47,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:47,816 INFO L87 Difference]: Start difference. First operand 816 states and 1202 transitions. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 01:45:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:48,008 INFO L93 Difference]: Finished difference Result 1275 states and 1885 transitions. [2024-11-24 01:45:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:48,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-24 01:45:48,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:48,012 INFO L225 Difference]: With dead ends: 1275 [2024-11-24 01:45:48,012 INFO L226 Difference]: Without dead ends: 862 [2024-11-24 01:45:48,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:48,014 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1585 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:48,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3268 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2024-11-24 01:45:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 822. [2024-11-24 01:45:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.4738124238733252) internal successors, (1210), 821 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 01:45:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1210 transitions. [2024-11-24 01:45:48,033 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1210 transitions. Word has length 260 [2024-11-24 01:45:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:48,033 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1210 transitions. [2024-11-24 01:45:48,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 01:45:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1210 transitions. [2024-11-24 01:45:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-24 01:45:48,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:48,035 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:48,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:45:48,036 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:48,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash 500926931, now seen corresponding path program 1 times [2024-11-24 01:45:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:48,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335922557] [2024-11-24 01:45:48,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:48,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335922557] [2024-11-24 01:45:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335922557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:49,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959944545] [2024-11-24 01:45:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:49,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:49,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:49,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:49,905 INFO L87 Difference]: Start difference. First operand 822 states and 1210 transitions. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 01:45:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:50,049 INFO L93 Difference]: Finished difference Result 1268 states and 1874 transitions. [2024-11-24 01:45:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-24 01:45:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:50,053 INFO L225 Difference]: With dead ends: 1268 [2024-11-24 01:45:50,054 INFO L226 Difference]: Without dead ends: 855 [2024-11-24 01:45:50,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:50,055 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1541 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:50,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2068 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-24 01:45:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 853. [2024-11-24 01:45:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.4730046948356808) internal successors, (1255), 852 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 01:45:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1255 transitions. [2024-11-24 01:45:50,077 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1255 transitions. Word has length 260 [2024-11-24 01:45:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:50,077 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1255 transitions. [2024-11-24 01:45:50,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 01:45:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1255 transitions. [2024-11-24 01:45:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-24 01:45:50,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:50,080 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:50,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:45:50,080 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:50,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1959908215, now seen corresponding path program 1 times [2024-11-24 01:45:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216036428] [2024-11-24 01:45:50,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:51,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216036428] [2024-11-24 01:45:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216036428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:51,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:51,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593428888] [2024-11-24 01:45:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:51,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:51,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:51,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:51,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:51,875 INFO L87 Difference]: Start difference. First operand 853 states and 1255 transitions. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 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 01:45:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:52,048 INFO L93 Difference]: Finished difference Result 1343 states and 1981 transitions. [2024-11-24 01:45:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 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 261 [2024-11-24 01:45:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:52,053 INFO L225 Difference]: With dead ends: 1343 [2024-11-24 01:45:52,053 INFO L226 Difference]: Without dead ends: 860 [2024-11-24 01:45:52,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:52,055 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1594 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:52,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 3089 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-24 01:45:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 855. [2024-11-24 01:45:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4718969555035128) internal successors, (1257), 854 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states 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 01:45:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1257 transitions. [2024-11-24 01:45:52,076 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1257 transitions. Word has length 261 [2024-11-24 01:45:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:52,077 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1257 transitions. [2024-11-24 01:45:52,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 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 01:45:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1257 transitions. [2024-11-24 01:45:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:45:52,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:52,080 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:52,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:45:52,080 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:52,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2093992540, now seen corresponding path program 1 times [2024-11-24 01:45:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068622225] [2024-11-24 01:45:52,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:53,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068622225] [2024-11-24 01:45:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068622225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271535312] [2024-11-24 01:45:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:53,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:53,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:53,834 INFO L87 Difference]: Start difference. First operand 855 states and 1257 transitions. Second operand has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 01:45:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:53,983 INFO L93 Difference]: Finished difference Result 1275 states and 1882 transitions. [2024-11-24 01:45:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-11-24 01:45:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:53,987 INFO L225 Difference]: With dead ends: 1275 [2024-11-24 01:45:53,987 INFO L226 Difference]: Without dead ends: 862 [2024-11-24 01:45:53,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:53,989 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1549 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:53,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3093 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2024-11-24 01:45:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 858. [2024-11-24 01:45:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.471411901983664) internal successors, (1261), 857 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states 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 01:45:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1261 transitions. [2024-11-24 01:45:54,009 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1261 transitions. Word has length 262 [2024-11-24 01:45:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:54,010 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1261 transitions. [2024-11-24 01:45:54,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 01:45:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1261 transitions. [2024-11-24 01:45:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 01:45:54,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:54,012 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:45:54,013 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:54,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash -91671297, now seen corresponding path program 1 times [2024-11-24 01:45:54,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:54,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913385995] [2024-11-24 01:45:54,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:54,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913385995] [2024-11-24 01:45:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913385995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392240678] [2024-11-24 01:45:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:55,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:55,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:55,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:55,630 INFO L87 Difference]: Start difference. First operand 858 states and 1261 transitions. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:55,815 INFO L93 Difference]: Finished difference Result 1281 states and 1890 transitions. [2024-11-24 01:45:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-24 01:45:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:55,818 INFO L225 Difference]: With dead ends: 1281 [2024-11-24 01:45:55,818 INFO L226 Difference]: Without dead ends: 868 [2024-11-24 01:45:55,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:55,820 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1557 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:55,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 3267 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-24 01:45:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 864. [2024-11-24 01:45:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.47045191193511) internal successors, (1269), 863 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states 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 01:45:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1269 transitions. [2024-11-24 01:45:55,838 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1269 transitions. Word has length 263 [2024-11-24 01:45:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:55,838 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1269 transitions. [2024-11-24 01:45:55,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1269 transitions. [2024-11-24 01:45:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 01:45:55,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:55,841 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:55,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:45:55,841 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:55,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 254366619, now seen corresponding path program 1 times [2024-11-24 01:45:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398748382] [2024-11-24 01:45:55,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398748382] [2024-11-24 01:45:57,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398748382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:57,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:57,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:45:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137911096] [2024-11-24 01:45:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:57,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:45:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:57,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:45:57,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:57,130 INFO L87 Difference]: Start difference. First operand 864 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:57,322 INFO L93 Difference]: Finished difference Result 1358 states and 1999 transitions. [2024-11-24 01:45:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:45:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-24 01:45:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:57,325 INFO L225 Difference]: With dead ends: 1358 [2024-11-24 01:45:57,325 INFO L226 Difference]: Without dead ends: 870 [2024-11-24 01:45:57,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:57,328 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1602 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:57,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 3435 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-24 01:45:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 866. [2024-11-24 01:45:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.469364161849711) internal successors, (1271), 865 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 01:45:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1271 transitions. [2024-11-24 01:45:57,345 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1271 transitions. Word has length 263 [2024-11-24 01:45:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:57,345 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1271 transitions. [2024-11-24 01:45:57,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1271 transitions. [2024-11-24 01:45:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 01:45:57,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:57,347 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:57,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:45:57,348 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:57,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2054006327, now seen corresponding path program 1 times [2024-11-24 01:45:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:57,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929397723] [2024-11-24 01:45:57,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:45:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929397723] [2024-11-24 01:45:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929397723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:59,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:45:59,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:45:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620745268] [2024-11-24 01:45:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:59,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:45:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:59,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:45:59,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:45:59,119 INFO L87 Difference]: Start difference. First operand 866 states and 1271 transitions. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:59,256 INFO L93 Difference]: Finished difference Result 1520 states and 2231 transitions. [2024-11-24 01:45:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:45:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-24 01:45:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:59,259 INFO L225 Difference]: With dead ends: 1520 [2024-11-24 01:45:59,259 INFO L226 Difference]: Without dead ends: 866 [2024-11-24 01:45:59,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:45:59,260 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1652 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:59,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2073 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:45:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-11-24 01:45:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2024-11-24 01:45:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.4682080924855492) internal successors, (1270), 865 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states 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 01:45:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1270 transitions. [2024-11-24 01:45:59,281 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1270 transitions. Word has length 263 [2024-11-24 01:45:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:59,281 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1270 transitions. [2024-11-24 01:45:59,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 01:45:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1270 transitions. [2024-11-24 01:45:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-24 01:45:59,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:59,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:45:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:45:59,285 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:59,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2100922918, now seen corresponding path program 1 times [2024-11-24 01:45:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572807525] [2024-11-24 01:45:59,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572807525] [2024-11-24 01:46:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572807525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:46:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:46:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:46:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087560110] [2024-11-24 01:46:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:46:00,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:46:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:00,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:46:00,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:46:00,827 INFO L87 Difference]: Start difference. First operand 866 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 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 01:46:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:00,976 INFO L93 Difference]: Finished difference Result 1480 states and 2172 transitions. [2024-11-24 01:46:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:46:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 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 264 [2024-11-24 01:46:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:00,980 INFO L225 Difference]: With dead ends: 1480 [2024-11-24 01:46:00,980 INFO L226 Difference]: Without dead ends: 864 [2024-11-24 01:46:00,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:46:00,981 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1630 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:00,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2073 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:46:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-24 01:46:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2024-11-24 01:46:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.4681344148319815) internal successors, (1267), 863 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 01:46:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1267 transitions. [2024-11-24 01:46:01,004 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1267 transitions. Word has length 264 [2024-11-24 01:46:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:01,004 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1267 transitions. [2024-11-24 01:46:01,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 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 01:46:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1267 transitions. [2024-11-24 01:46:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-24 01:46:01,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:01,006 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:01,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:46:01,007 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:01,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1562482294, now seen corresponding path program 1 times [2024-11-24 01:46:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063870196] [2024-11-24 01:46:01,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:46:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:04,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063870196] [2024-11-24 01:46:04,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063870196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:46:04,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736541984] [2024-11-24 01:46:04,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:04,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:46:04,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:46:04,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:46:04,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:46:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:06,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-24 01:46:06,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:46:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:08,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:46:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736541984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:46:11,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:46:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-11-24 01:46:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229986632] [2024-11-24 01:46:11,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:46:11,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:46:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:11,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:46:11,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:46:11,434 INFO L87 Difference]: Start difference. First operand 864 states and 1267 transitions. Second operand has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:46:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:13,820 INFO L93 Difference]: Finished difference Result 2862 states and 4214 transitions. [2024-11-24 01:46:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:46:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2024-11-24 01:46:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:13,826 INFO L225 Difference]: With dead ends: 2862 [2024-11-24 01:46:13,826 INFO L226 Difference]: Without dead ends: 2077 [2024-11-24 01:46:13,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 511 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=352, Invalid=1718, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 01:46:13,828 INFO L435 NwaCegarLoop]: 600 mSDtfsCounter, 15576 mSDsluCounter, 9862 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15576 SdHoareTripleChecker+Valid, 10462 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:13,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15576 Valid, 10462 Invalid, 1683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:46:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-24 01:46:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1638. [2024-11-24 01:46:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 1.4679291386682956) internal successors, (2403), 1637 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states 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 01:46:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2403 transitions. [2024-11-24 01:46:13,861 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2403 transitions. Word has length 264 [2024-11-24 01:46:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:13,862 INFO L471 AbstractCegarLoop]: Abstraction has 1638 states and 2403 transitions. [2024-11-24 01:46:13,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:46:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2403 transitions. [2024-11-24 01:46:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-24 01:46:13,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:13,866 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:13,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:46:14,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:46:14,067 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1528262603, now seen corresponding path program 1 times [2024-11-24 01:46:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172537649] [2024-11-24 01:46:14,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172537649] [2024-11-24 01:46:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172537649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:46:14,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:46:14,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:46:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878997437] [2024-11-24 01:46:14,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:46:14,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:46:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:14,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:46:14,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:46:14,935 INFO L87 Difference]: Start difference. First operand 1638 states and 2403 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 01:46:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:15,039 INFO L93 Difference]: Finished difference Result 2434 states and 3570 transitions. [2024-11-24 01:46:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:46:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-11-24 01:46:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:15,043 INFO L225 Difference]: With dead ends: 2434 [2024-11-24 01:46:15,044 INFO L226 Difference]: Without dead ends: 1647 [2024-11-24 01:46:15,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:46:15,045 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 1743 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:15,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2077 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:46:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2024-11-24 01:46:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1635. [2024-11-24 01:46:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 1.4669522643818849) internal successors, (2397), 1634 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states 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 01:46:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2397 transitions. [2024-11-24 01:46:15,070 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2397 transitions. Word has length 265 [2024-11-24 01:46:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:15,070 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 2397 transitions. [2024-11-24 01:46:15,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 01:46:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2397 transitions. [2024-11-24 01:46:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-24 01:46:15,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:15,073 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:15,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:46:15,073 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:15,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1183023602, now seen corresponding path program 1 times [2024-11-24 01:46:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:15,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260380138] [2024-11-24 01:46:15,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260380138] [2024-11-24 01:46:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260380138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:46:15,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:46:15,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:46:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211975585] [2024-11-24 01:46:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:46:15,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:46:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:15,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:46:15,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:46:15,666 INFO L87 Difference]: Start difference. First operand 1635 states and 2397 transitions. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 01:46:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:15,793 INFO L93 Difference]: Finished difference Result 2050 states and 3014 transitions. [2024-11-24 01:46:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:46:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-11-24 01:46:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:15,797 INFO L225 Difference]: With dead ends: 2050 [2024-11-24 01:46:15,797 INFO L226 Difference]: Without dead ends: 1262 [2024-11-24 01:46:15,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:46:15,798 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 1725 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:15,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 2076 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:46:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2024-11-24 01:46:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1260. [2024-11-24 01:46:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 1.4733915806195392) internal successors, (1855), 1259 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states 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 01:46:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1855 transitions. [2024-11-24 01:46:15,815 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1855 transitions. Word has length 265 [2024-11-24 01:46:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:15,815 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1855 transitions. [2024-11-24 01:46:15,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 01:46:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1855 transitions. [2024-11-24 01:46:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-24 01:46:15,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:15,819 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:15,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:46:15,820 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:15,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1957156687, now seen corresponding path program 1 times [2024-11-24 01:46:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964225161] [2024-11-24 01:46:15,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:15,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 187 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:24,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964225161] [2024-11-24 01:46:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964225161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:46:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222277422] [2024-11-24 01:46:24,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:24,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:46:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:46:24,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:46:24,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:46:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:25,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-24 01:46:26,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:46:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 159 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:29,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:46:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 153 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222277422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:46:38,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:46:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 15] total 31 [2024-11-24 01:46:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236443721] [2024-11-24 01:46:38,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:46:38,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:46:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:38,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:46:38,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:46:38,407 INFO L87 Difference]: Start difference. First operand 1260 states and 1855 transitions. Second operand has 31 states, 31 states have (on average 40.29032258064516) internal successors, (1249), 31 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 01:46:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:40,951 INFO L93 Difference]: Finished difference Result 3942 states and 5862 transitions. [2024-11-24 01:46:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:46:40,951 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 40.29032258064516) internal successors, (1249), 31 states have internal predecessors, (1249), 0 states have call successors, (0), 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 470 [2024-11-24 01:46:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:40,959 INFO L225 Difference]: With dead ends: 3942 [2024-11-24 01:46:40,959 INFO L226 Difference]: Without dead ends: 3129 [2024-11-24 01:46:40,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1939, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 01:46:40,962 INFO L435 NwaCegarLoop]: 1078 mSDtfsCounter, 6527 mSDsluCounter, 14827 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 15905 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:40,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6527 Valid, 15905 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:46:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-11-24 01:46:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1563. [2024-11-24 01:46:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.471830985915493) internal successors, (2299), 1562 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states 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 01:46:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2299 transitions. [2024-11-24 01:46:40,996 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2299 transitions. Word has length 470 [2024-11-24 01:46:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:40,996 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2299 transitions. [2024-11-24 01:46:40,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 40.29032258064516) internal successors, (1249), 31 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 01:46:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2299 transitions. [2024-11-24 01:46:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-24 01:46:41,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:41,002 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:41,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:46:41,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:46:41,202 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:41,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -13654829, now seen corresponding path program 1 times [2024-11-24 01:46:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038810763] [2024-11-24 01:46:41,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:46:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 187 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:46:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038810763] [2024-11-24 01:46:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038810763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:46:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037433121] [2024-11-24 01:46:51,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:46:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:46:51,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:46:51,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:46:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:53,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-24 01:46:53,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:46:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 141 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:46:57,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:47:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 135 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:03,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037433121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:47:03,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:47:03,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 15] total 37 [2024-11-24 01:47:03,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186923722] [2024-11-24 01:47:03,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:47:03,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-24 01:47:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:47:03,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-24 01:47:03,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:47:03,575 INFO L87 Difference]: Start difference. First operand 1563 states and 2299 transitions. Second operand has 37 states, 37 states have (on average 34.486486486486484) internal successors, (1276), 37 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states 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 01:47:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:47:09,554 INFO L93 Difference]: Finished difference Result 7258 states and 10751 transitions. [2024-11-24 01:47:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-24 01:47:09,555 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 34.486486486486484) internal successors, (1276), 37 states have internal predecessors, (1276), 0 states have call successors, (0), 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 473 [2024-11-24 01:47:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:47:09,569 INFO L225 Difference]: With dead ends: 7258 [2024-11-24 01:47:09,570 INFO L226 Difference]: Without dead ends: 6277 [2024-11-24 01:47:09,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2137 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1030, Invalid=8090, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 01:47:09,574 INFO L435 NwaCegarLoop]: 2148 mSDtfsCounter, 13304 mSDsluCounter, 41012 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13304 SdHoareTripleChecker+Valid, 43160 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:47:09,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13304 Valid, 43160 Invalid, 3816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:47:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2024-11-24 01:47:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 3399. [2024-11-24 01:47:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3398 states have (on average 1.4746909947027664) internal successors, (5011), 3398 states have internal predecessors, (5011), 0 states have call successors, (0), 0 states 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 01:47:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5011 transitions. [2024-11-24 01:47:09,683 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5011 transitions. Word has length 473 [2024-11-24 01:47:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:47:09,684 INFO L471 AbstractCegarLoop]: Abstraction has 3399 states and 5011 transitions. [2024-11-24 01:47:09,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 34.486486486486484) internal successors, (1276), 37 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states 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 01:47:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5011 transitions. [2024-11-24 01:47:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-24 01:47:09,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:47:09,689 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:47:09,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:47:09,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:47:09,890 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:47:09,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:47:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1362206830, now seen corresponding path program 1 times [2024-11-24 01:47:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:47:09,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520597388] [2024-11-24 01:47:09,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:47:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 177 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:47:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520597388] [2024-11-24 01:47:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520597388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533623480] [2024-11-24 01:47:17,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:17,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:17,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:17,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:47:17,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:47:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:19,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 3025 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-24 01:47:19,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:47:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 189 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:21,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:47:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:47:23,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533623480] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:47:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 10] total 27 [2024-11-24 01:47:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676960774] [2024-11-24 01:47:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:47:23,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:47:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:47:23,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:47:23,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:47:23,304 INFO L87 Difference]: Start difference. First operand 3399 states and 5011 transitions. Second operand has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 01:47:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:47:24,208 INFO L93 Difference]: Finished difference Result 7773 states and 11489 transitions. [2024-11-24 01:47:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:47:24,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 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 474 [2024-11-24 01:47:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:47:24,218 INFO L225 Difference]: With dead ends: 7773 [2024-11-24 01:47:24,218 INFO L226 Difference]: Without dead ends: 6699 [2024-11-24 01:47:24,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 931 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:47:24,222 INFO L435 NwaCegarLoop]: 1268 mSDtfsCounter, 2647 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 9778 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:47:24,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 9778 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:47:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6699 states. [2024-11-24 01:47:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6699 to 6673. [2024-11-24 01:47:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 6672 states have (on average 1.476468824940048) internal successors, (9851), 6672 states have internal predecessors, (9851), 0 states have call successors, (0), 0 states 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 01:47:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 9851 transitions. [2024-11-24 01:47:24,306 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 9851 transitions. Word has length 474 [2024-11-24 01:47:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:47:24,306 INFO L471 AbstractCegarLoop]: Abstraction has 6673 states and 9851 transitions. [2024-11-24 01:47:24,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 01:47:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 9851 transitions. [2024-11-24 01:47:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-24 01:47:24,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:47:24,314 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:47:24,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:47:24,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:24,515 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:47:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:47:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1967252343, now seen corresponding path program 1 times [2024-11-24 01:47:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:47:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441456702] [2024-11-24 01:47:24,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:47:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 177 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:47:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441456702] [2024-11-24 01:47:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441456702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336677318] [2024-11-24 01:47:30,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:30,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:30,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:30,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:47:30,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:47:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:32,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:47:32,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:47:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 209 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:34,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:47:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 209 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336677318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:47:37,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:47:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-24 01:47:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432853181] [2024-11-24 01:47:37,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:47:37,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:47:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:47:37,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:47:37,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:47:37,008 INFO L87 Difference]: Start difference. First operand 6673 states and 9851 transitions. Second operand has 21 states, 21 states have (on average 59.142857142857146) internal successors, (1242), 21 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 01:47:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:47:38,512 INFO L93 Difference]: Finished difference Result 13170 states and 19553 transitions. [2024-11-24 01:47:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:47:38,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 59.142857142857146) internal successors, (1242), 21 states have internal predecessors, (1242), 0 states have call successors, (0), 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 474 [2024-11-24 01:47:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:47:38,530 INFO L225 Difference]: With dead ends: 13170 [2024-11-24 01:47:38,530 INFO L226 Difference]: Without dead ends: 8483 [2024-11-24 01:47:38,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=385, Invalid=1255, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:47:38,539 INFO L435 NwaCegarLoop]: 1085 mSDtfsCounter, 12140 mSDsluCounter, 7415 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12140 SdHoareTripleChecker+Valid, 8500 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:47:38,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12140 Valid, 8500 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:47:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8483 states. [2024-11-24 01:47:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8483 to 6549. [2024-11-24 01:47:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 6548 states have (on average 1.4720525351252292) internal successors, (9639), 6548 states have internal predecessors, (9639), 0 states have call successors, (0), 0 states 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 01:47:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9639 transitions. [2024-11-24 01:47:38,650 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9639 transitions. Word has length 474 [2024-11-24 01:47:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:47:38,651 INFO L471 AbstractCegarLoop]: Abstraction has 6549 states and 9639 transitions. [2024-11-24 01:47:38,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.142857142857146) internal successors, (1242), 21 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 01:47:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9639 transitions. [2024-11-24 01:47:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-24 01:47:38,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:47:38,657 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:47:38,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:47:38,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:38,858 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:47:38,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:47:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash -825390926, now seen corresponding path program 1 times [2024-11-24 01:47:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:47:38,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214186719] [2024-11-24 01:47:38,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:47:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 217 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:46,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:47:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214186719] [2024-11-24 01:47:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214186719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925438094] [2024-11-24 01:47:46,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:46,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:46,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:46,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:47:46,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:47:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:48,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-24 01:47:48,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:47:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 141 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:50,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:47:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-24 01:47:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925438094] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:51,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:47:51,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13, 9] total 25 [2024-11-24 01:47:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352802162] [2024-11-24 01:47:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:47:51,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:47:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:47:51,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:47:51,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:47:51,063 INFO L87 Difference]: Start difference. First operand 6549 states and 9639 transitions. Second operand has 7 states, 7 states have (on average 57.857142857142854) internal successors, (405), 7 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:47:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:47:51,512 INFO L93 Difference]: Finished difference Result 17621 states and 26146 transitions. [2024-11-24 01:47:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:47:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 57.857142857142854) internal successors, (405), 7 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2024-11-24 01:47:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:47:51,524 INFO L225 Difference]: With dead ends: 17621 [2024-11-24 01:47:51,524 INFO L226 Difference]: Without dead ends: 9105 [2024-11-24 01:47:51,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:47:51,534 INFO L435 NwaCegarLoop]: 1319 mSDtfsCounter, 1913 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:47:51,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 3771 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:47:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2024-11-24 01:47:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 6957. [2024-11-24 01:47:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6957 states, 6956 states have (on average 1.4719666474985624) internal successors, (10239), 6956 states have internal predecessors, (10239), 0 states have call successors, (0), 0 states 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 01:47:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10239 transitions. [2024-11-24 01:47:51,646 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10239 transitions. Word has length 475 [2024-11-24 01:47:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:47:51,647 INFO L471 AbstractCegarLoop]: Abstraction has 6957 states and 10239 transitions. [2024-11-24 01:47:51,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.857142857142854) internal successors, (405), 7 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:47:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10239 transitions. [2024-11-24 01:47:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-24 01:47:51,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:47:51,654 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:47:51,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:47:51,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 01:47:51,855 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:47:51,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:47:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash -650983441, now seen corresponding path program 1 times [2024-11-24 01:47:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:47:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771601954] [2024-11-24 01:47:51,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:47:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 147 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:47:57,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:47:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771601954] [2024-11-24 01:47:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771601954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352089425] [2024-11-24 01:47:57,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:57,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:57,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:57,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:47:57,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:47:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:59,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 01:47:59,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:48:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 142 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:02,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:48:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 99 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352089425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:48:09,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:48:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 16] total 31 [2024-11-24 01:48:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606031232] [2024-11-24 01:48:09,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:48:09,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:48:09,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:09,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:48:09,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:48:09,111 INFO L87 Difference]: Start difference. First operand 6957 states and 10239 transitions. Second operand has 31 states, 31 states have (on average 41.064516129032256) internal successors, (1273), 31 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:17,665 INFO L93 Difference]: Finished difference Result 57097 states and 84883 transitions. [2024-11-24 01:48:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-24 01:48:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 41.064516129032256) internal successors, (1273), 31 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2024-11-24 01:48:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:17,710 INFO L225 Difference]: With dead ends: 57097 [2024-11-24 01:48:17,710 INFO L226 Difference]: Without dead ends: 52397 [2024-11-24 01:48:17,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8290 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2680, Invalid=20272, Unknown=0, NotChecked=0, Total=22952 [2024-11-24 01:48:17,726 INFO L435 NwaCegarLoop]: 1068 mSDtfsCounter, 33818 mSDsluCounter, 17142 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33818 SdHoareTripleChecker+Valid, 18210 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:17,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33818 Valid, 18210 Invalid, 2830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 01:48:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52397 states. [2024-11-24 01:48:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52397 to 30375. [2024-11-24 01:48:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30375 states, 30374 states have (on average 1.4774148943175085) internal successors, (44875), 30374 states have internal predecessors, (44875), 0 states have call successors, (0), 0 states 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 01:48:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30375 states to 30375 states and 44875 transitions. [2024-11-24 01:48:18,210 INFO L78 Accepts]: Start accepts. Automaton has 30375 states and 44875 transitions. Word has length 476 [2024-11-24 01:48:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:18,211 INFO L471 AbstractCegarLoop]: Abstraction has 30375 states and 44875 transitions. [2024-11-24 01:48:18,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 41.064516129032256) internal successors, (1273), 31 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30375 states and 44875 transitions. [2024-11-24 01:48:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-24 01:48:18,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:18,224 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:18,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:48:18,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 01:48:18,425 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:18,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 623934989, now seen corresponding path program 1 times [2024-11-24 01:48:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:18,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852345791] [2024-11-24 01:48:18,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 129 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852345791] [2024-11-24 01:48:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852345791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:48:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698683620] [2024-11-24 01:48:24,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:24,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:48:24,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:48:24,576 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:48:24,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:48:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:26,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-24 01:48:26,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:48:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 124 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:29,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:48:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 124 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698683620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:48:33,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:48:33,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2024-11-24 01:48:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405992394] [2024-11-24 01:48:33,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:48:33,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:48:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:33,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:48:33,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:48:33,042 INFO L87 Difference]: Start difference. First operand 30375 states and 44875 transitions. Second operand has 24 states, 24 states have (on average 55.208333333333336) internal successors, (1325), 24 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 01:48:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:36,211 INFO L93 Difference]: Finished difference Result 66451 states and 98541 transitions. [2024-11-24 01:48:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-24 01:48:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 55.208333333333336) internal successors, (1325), 24 states have internal predecessors, (1325), 0 states have call successors, (0), 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 477 [2024-11-24 01:48:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:36,241 INFO L225 Difference]: With dead ends: 66451 [2024-11-24 01:48:36,241 INFO L226 Difference]: Without dead ends: 42137 [2024-11-24 01:48:36,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=726, Invalid=4386, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 01:48:36,260 INFO L435 NwaCegarLoop]: 1282 mSDtfsCounter, 12531 mSDsluCounter, 17849 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12531 SdHoareTripleChecker+Valid, 19131 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:36,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12531 Valid, 19131 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:48:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42137 states. [2024-11-24 01:48:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42137 to 31655. [2024-11-24 01:48:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31655 states, 31654 states have (on average 1.4760535793264675) internal successors, (46723), 31654 states have internal predecessors, (46723), 0 states have call successors, (0), 0 states 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 01:48:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31655 states to 31655 states and 46723 transitions. [2024-11-24 01:48:36,656 INFO L78 Accepts]: Start accepts. Automaton has 31655 states and 46723 transitions. Word has length 477 [2024-11-24 01:48:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:36,657 INFO L471 AbstractCegarLoop]: Abstraction has 31655 states and 46723 transitions. [2024-11-24 01:48:36,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 55.208333333333336) internal successors, (1325), 24 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 01:48:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 31655 states and 46723 transitions. [2024-11-24 01:48:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-24 01:48:36,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:36,665 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:36,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:48:36,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 01:48:36,866 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:36,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1887196151, now seen corresponding path program 1 times [2024-11-24 01:48:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:36,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645708787] [2024-11-24 01:48:36,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:44,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645708787] [2024-11-24 01:48:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645708787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:48:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266560900] [2024-11-24 01:48:44,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:48:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:48:44,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:48:44,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:48:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:46,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-24 01:48:46,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:48:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 105 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:49,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:48:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 27 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266560900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:48:53,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:48:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 16] total 34 [2024-11-24 01:48:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552371553] [2024-11-24 01:48:53,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:48:53,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 01:48:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:53,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 01:48:53,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:48:53,929 INFO L87 Difference]: Start difference. First operand 31655 states and 46723 transitions. Second operand has 34 states, 34 states have (on average 39.11764705882353) internal successors, (1330), 34 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states 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 01:49:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:04,297 INFO L93 Difference]: Finished difference Result 233942 states and 347101 transitions. [2024-11-24 01:49:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-24 01:49:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 39.11764705882353) internal successors, (1330), 34 states have internal predecessors, (1330), 0 states have call successors, (0), 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 479 [2024-11-24 01:49:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:04,428 INFO L225 Difference]: With dead ends: 233942 [2024-11-24 01:49:04,428 INFO L226 Difference]: Without dead ends: 206800 [2024-11-24 01:49:04,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9213 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2602, Invalid=23804, Unknown=0, NotChecked=0, Total=26406 [2024-11-24 01:49:04,475 INFO L435 NwaCegarLoop]: 2461 mSDtfsCounter, 21583 mSDsluCounter, 58248 mSDsCounter, 0 mSdLazyCounter, 5761 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21583 SdHoareTripleChecker+Valid, 60709 SdHoareTripleChecker+Invalid, 5791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:04,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21583 Valid, 60709 Invalid, 5791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 5761 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 01:49:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206800 states. [2024-11-24 01:49:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206800 to 67032. [2024-11-24 01:49:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67032 states, 67031 states have (on average 1.4755411675195058) internal successors, (98907), 67031 states have internal predecessors, (98907), 0 states have call successors, (0), 0 states 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 01:49:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67032 states to 67032 states and 98907 transitions. [2024-11-24 01:49:06,013 INFO L78 Accepts]: Start accepts. Automaton has 67032 states and 98907 transitions. Word has length 479 [2024-11-24 01:49:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:06,014 INFO L471 AbstractCegarLoop]: Abstraction has 67032 states and 98907 transitions. [2024-11-24 01:49:06,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 39.11764705882353) internal successors, (1330), 34 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states 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 01:49:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 67032 states and 98907 transitions. [2024-11-24 01:49:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 01:49:06,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:06,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:06,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:49:06,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:06,232 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:06,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:06,232 INFO L85 PathProgramCache]: Analyzing trace with hash -366771619, now seen corresponding path program 1 times [2024-11-24 01:49:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213548532] [2024-11-24 01:49:06,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 128 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213548532] [2024-11-24 01:49:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213548532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:49:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690484206] [2024-11-24 01:49:15,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:15,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:15,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:15,334 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:49:15,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:49:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:17,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 01:49:17,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 121 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:20,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 147 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690484206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:23,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:23,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 33 [2024-11-24 01:49:23,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952748426] [2024-11-24 01:49:23,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:23,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:49:23,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:23,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:49:23,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:49:23,392 INFO L87 Difference]: Start difference. First operand 67032 states and 98907 transitions. Second operand has 33 states, 33 states have (on average 39.121212121212125) internal successors, (1291), 33 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 01:49:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:32,201 INFO L93 Difference]: Finished difference Result 341636 states and 505814 transitions. [2024-11-24 01:49:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-24 01:49:32,201 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 39.121212121212125) internal successors, (1291), 33 states have internal predecessors, (1291), 0 states have call successors, (0), 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 480 [2024-11-24 01:49:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:33,048 INFO L225 Difference]: With dead ends: 341636 [2024-11-24 01:49:33,048 INFO L226 Difference]: Without dead ends: 313905 [2024-11-24 01:49:33,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8006 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2767, Invalid=20795, Unknown=0, NotChecked=0, Total=23562 [2024-11-24 01:49:33,092 INFO L435 NwaCegarLoop]: 1622 mSDtfsCounter, 21937 mSDsluCounter, 35121 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21937 SdHoareTripleChecker+Valid, 36743 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:33,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21937 Valid, 36743 Invalid, 4541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 4507 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:49:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313905 states. [2024-11-24 01:49:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313905 to 84017. [2024-11-24 01:49:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84017 states, 84016 states have (on average 1.4750404684821938) internal successors, (123927), 84016 states have internal predecessors, (123927), 0 states have call successors, (0), 0 states 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 01:49:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84017 states to 84017 states and 123927 transitions. [2024-11-24 01:49:36,363 INFO L78 Accepts]: Start accepts. Automaton has 84017 states and 123927 transitions. Word has length 480 [2024-11-24 01:49:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:36,363 INFO L471 AbstractCegarLoop]: Abstraction has 84017 states and 123927 transitions. [2024-11-24 01:49:36,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 39.121212121212125) internal successors, (1291), 33 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 01:49:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 84017 states and 123927 transitions. [2024-11-24 01:49:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 01:49:36,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:36,385 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:36,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:49:36,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 01:49:36,586 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:36,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -670630151, now seen corresponding path program 1 times [2024-11-24 01:49:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:36,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55769352] [2024-11-24 01:49:36,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 215 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:43,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55769352] [2024-11-24 01:49:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55769352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:49:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214403964] [2024-11-24 01:49:43,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:43,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:43,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:43,820 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:49:43,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:49:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:45,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-24 01:49:45,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 87 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:49,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 81 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214403964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:56,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 16] total 33 [2024-11-24 01:49:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961148045] [2024-11-24 01:49:56,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:56,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:49:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:56,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:49:56,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:49:56,559 INFO L87 Difference]: Start difference. First operand 84017 states and 123927 transitions. Second operand has 33 states, 33 states have (on average 40.93939393939394) internal successors, (1351), 33 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 01:50:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:02,041 INFO L93 Difference]: Finished difference Result 177938 states and 262559 transitions. [2024-11-24 01:50:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 01:50:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 40.93939393939394) internal successors, (1351), 33 states have internal predecessors, (1351), 0 states have call successors, (0), 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 480 [2024-11-24 01:50:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:02,125 INFO L225 Difference]: With dead ends: 177938 [2024-11-24 01:50:02,125 INFO L226 Difference]: Without dead ends: 104405 [2024-11-24 01:50:02,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=915, Invalid=5405, Unknown=0, NotChecked=0, Total=6320 [2024-11-24 01:50:02,171 INFO L435 NwaCegarLoop]: 1063 mSDtfsCounter, 19232 mSDsluCounter, 18118 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19232 SdHoareTripleChecker+Valid, 19181 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:02,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19232 Valid, 19181 Invalid, 2797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 01:50:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104405 states. [2024-11-24 01:50:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104405 to 93165. [2024-11-24 01:50:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93165 states, 93164 states have (on average 1.4711583873599243) internal successors, (137059), 93164 states have internal predecessors, (137059), 0 states have call successors, (0), 0 states 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 01:50:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93165 states to 93165 states and 137059 transitions. [2024-11-24 01:50:03,803 INFO L78 Accepts]: Start accepts. Automaton has 93165 states and 137059 transitions. Word has length 480 [2024-11-24 01:50:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:03,803 INFO L471 AbstractCegarLoop]: Abstraction has 93165 states and 137059 transitions. [2024-11-24 01:50:03,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 40.93939393939394) internal successors, (1351), 33 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states 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 01:50:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 93165 states and 137059 transitions. [2024-11-24 01:50:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-24 01:50:03,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:03,853 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:03,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:50:04,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:04,054 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:04,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash 510781306, now seen corresponding path program 1 times [2024-11-24 01:50:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138038078] [2024-11-24 01:50:04,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-24 01:50:05,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138038078] [2024-11-24 01:50:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138038078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:50:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:50:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:50:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209541214] [2024-11-24 01:50:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:05,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:50:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:05,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:50:05,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:50:05,789 INFO L87 Difference]: Start difference. First operand 93165 states and 137059 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 01:50:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:06,084 INFO L93 Difference]: Finished difference Result 162352 states and 239411 transitions. [2024-11-24 01:50:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:50:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 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 483 [2024-11-24 01:50:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:06,134 INFO L225 Difference]: With dead ends: 162352 [2024-11-24 01:50:06,134 INFO L226 Difference]: Without dead ends: 75561 [2024-11-24 01:50:06,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:50:06,168 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 1801 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:06,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 2099 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:50:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75561 states. [2024-11-24 01:50:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75561 to 75490. [2024-11-24 01:50:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75490 states, 75489 states have (on average 1.4754997416842188) internal successors, (111384), 75489 states have internal predecessors, (111384), 0 states have call successors, (0), 0 states 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 01:50:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75490 states to 75490 states and 111384 transitions. [2024-11-24 01:50:07,097 INFO L78 Accepts]: Start accepts. Automaton has 75490 states and 111384 transitions. Word has length 483 [2024-11-24 01:50:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:07,098 INFO L471 AbstractCegarLoop]: Abstraction has 75490 states and 111384 transitions. [2024-11-24 01:50:07,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 01:50:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 75490 states and 111384 transitions. [2024-11-24 01:50:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2024-11-24 01:50:07,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:07,196 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:07,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-24 01:50:07,196 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1226962900, now seen corresponding path program 1 times [2024-11-24 01:50:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145679615] [2024-11-24 01:50:07,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:50:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 628 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:50:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:50:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145679615] [2024-11-24 01:50:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145679615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:33,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433420232] [2024-11-24 01:50:33,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:33,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:33,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:50:33,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:50:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:50:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:50:36,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 4435 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-24 01:50:36,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:50:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 426 proven. 97 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-24 01:50:38,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:50:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-24 01:50:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433420232] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:50:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:50:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 9] total 28 [2024-11-24 01:50:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965832658] [2024-11-24 01:50:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:50:39,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:50:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:50:39,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:50:39,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:50:39,953 INFO L87 Difference]: Start difference. First operand 75490 states and 111384 transitions. Second operand has 8 states, 8 states have (on average 67.125) internal successors, (537), 8 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 01:50:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:40,887 INFO L93 Difference]: Finished difference Result 197052 states and 291541 transitions. [2024-11-24 01:50:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:50:40,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 67.125) internal successors, (537), 8 states have internal predecessors, (537), 0 states have call successors, (0), 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 687 [2024-11-24 01:50:40,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:40,965 INFO L225 Difference]: With dead ends: 197052 [2024-11-24 01:50:40,965 INFO L226 Difference]: Without dead ends: 104758 [2024-11-24 01:50:41,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1390 GetRequests, 1361 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:50:41,012 INFO L435 NwaCegarLoop]: 1416 mSDtfsCounter, 1722 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:41,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 4160 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:50:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104758 states. [2024-11-24 01:50:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104758 to 92068. [2024-11-24 01:50:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92068 states, 92067 states have (on average 1.4755775685098895) internal successors, (135852), 92067 states have internal predecessors, (135852), 0 states have call successors, (0), 0 states 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 01:50:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92068 states to 92068 states and 135852 transitions. [2024-11-24 01:50:42,876 INFO L78 Accepts]: Start accepts. Automaton has 92068 states and 135852 transitions. Word has length 687 [2024-11-24 01:50:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:42,876 INFO L471 AbstractCegarLoop]: Abstraction has 92068 states and 135852 transitions. [2024-11-24 01:50:42,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.125) internal successors, (537), 8 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 01:50:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 92068 states and 135852 transitions. [2024-11-24 01:50:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2024-11-24 01:50:42,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:42,954 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:42,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:50:43,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 01:50:43,159 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:43,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 783817840, now seen corresponding path program 1 times [2024-11-24 01:50:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545934262] [2024-11-24 01:50:43,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:51:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 629 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:51:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:51:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545934262] [2024-11-24 01:51:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545934262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:51:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358562643] [2024-11-24 01:51:11,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:11,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:51:11,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:51:11,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:51:11,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:51:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:13,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 4433 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-24 01:51:13,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:51:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 422 proven. 156 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-24 01:51:17,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:51:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 418 proven. 165 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-24 01:51:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358562643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:51:25,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:51:25,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 16] total 39 [2024-11-24 01:51:25,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854427939] [2024-11-24 01:51:25,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:51:25,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-24 01:51:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:51:25,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-24 01:51:25,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:51:25,398 INFO L87 Difference]: Start difference. First operand 92068 states and 135852 transitions. Second operand has 39 states, 39 states have (on average 43.794871794871796) internal successors, (1708), 39 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 01:51:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:51:49,441 INFO L93 Difference]: Finished difference Result 1018272 states and 1507235 transitions. [2024-11-24 01:51:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2024-11-24 01:51:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 43.794871794871796) internal successors, (1708), 39 states have internal predecessors, (1708), 0 states have call successors, (0), 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 687 [2024-11-24 01:51:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:51:51,173 INFO L225 Difference]: With dead ends: 1018272 [2024-11-24 01:51:51,173 INFO L226 Difference]: Without dead ends: 938824 [2024-11-24 01:51:51,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1599 GetRequests, 1353 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23409 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=5177, Invalid=56079, Unknown=0, NotChecked=0, Total=61256 [2024-11-24 01:51:51,437 INFO L435 NwaCegarLoop]: 1620 mSDtfsCounter, 28055 mSDsluCounter, 56601 mSDsCounter, 0 mSdLazyCounter, 7070 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28055 SdHoareTripleChecker+Valid, 58221 SdHoareTripleChecker+Invalid, 7131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 7070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:51:51,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28055 Valid, 58221 Invalid, 7131 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 7070 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-24 01:51:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938824 states. [2024-11-24 01:52:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938824 to 485296. [2024-11-24 01:52:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485296 states, 485295 states have (on average 1.4755787716749607) internal successors, (716091), 485295 states have internal predecessors, (716091), 0 states have call successors, (0), 0 states 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 01:52:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485296 states to 485296 states and 716091 transitions. [2024-11-24 01:52:03,700 INFO L78 Accepts]: Start accepts. Automaton has 485296 states and 716091 transitions. Word has length 687 [2024-11-24 01:52:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:03,702 INFO L471 AbstractCegarLoop]: Abstraction has 485296 states and 716091 transitions. [2024-11-24 01:52:03,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 43.794871794871796) internal successors, (1708), 39 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 01:52:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 485296 states and 716091 transitions. [2024-11-24 01:52:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2024-11-24 01:52:04,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:04,147 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:04,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:52:04,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 01:52:04,348 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:04,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1400409023, now seen corresponding path program 1 times [2024-11-24 01:52:04,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:04,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788505437] [2024-11-24 01:52:04,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 422 proven. 213 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 01:52:20,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788505437] [2024-11-24 01:52:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788505437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:52:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528366529] [2024-11-24 01:52:20,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:20,164 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:52:20,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60114a30-a03a-4078-8495-4e1a12b2f0db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:52:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:23,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 4442 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-24 01:52:23,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:52:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 422 proven. 193 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:52:25,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:52:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 01:52:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528366529] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:52:27,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:52:27,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 22 [2024-11-24 01:52:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931768783] [2024-11-24 01:52:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:27,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:52:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:27,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:52:27,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:52:27,115 INFO L87 Difference]: Start difference. First operand 485296 states and 716091 transitions. Second operand has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 01:52:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:30,951 INFO L93 Difference]: Finished difference Result 1061418 states and 1567526 transitions. [2024-11-24 01:52:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:52:30,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 0 states have call successors, (0), 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 690 [2024-11-24 01:52:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:31,560 INFO L225 Difference]: With dead ends: 1061418 [2024-11-24 01:52:31,560 INFO L226 Difference]: Without dead ends: 540388 [2024-11-24 01:52:31,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1367 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:52:31,802 INFO L435 NwaCegarLoop]: 1667 mSDtfsCounter, 1176 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 5945 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:31,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 5945 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:52:32,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540388 states.