./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:40:28,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:40:28,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:40:28,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:40:28,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:40:28,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:40:28,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:40:28,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:40:28,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:40:28,784 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:40:28,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:40:28,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:40:28,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:40:28,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:40:28,786 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:40:28,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:40:28,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:40:28,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:40:28,788 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:28,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:28,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:28,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:28,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:28,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:40:28,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:40:28,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:40:28,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:40:28,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:40:28,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:40:28,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:40:28,791 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_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2024-11-28 03:40:29,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:40:29,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:40:29,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:40:29,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:40:29,108 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:40:29,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2024-11-28 03:40:32,111 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/data/edd9e6d00/9241a6e3bf654420a39e45245f82b5af/FLAG484909a19 [2024-11-28 03:40:32,365 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:40:32,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/sv-benchmarks/c/array-patterns/array23_pattern.c [2024-11-28 03:40:32,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/data/edd9e6d00/9241a6e3bf654420a39e45245f82b5af/FLAG484909a19 [2024-11-28 03:40:32,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/data/edd9e6d00/9241a6e3bf654420a39e45245f82b5af [2024-11-28 03:40:32,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:40:32,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:40:32,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:32,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:40:32,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:40:32,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f43a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32, skipping insertion in model container [2024-11-28 03:40:32,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:40:32,598 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_53759380-e3d3-4498-b4de-186ed42cbf2d/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2024-11-28 03:40:32,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:32,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:40:32,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2024-11-28 03:40:32,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:32,675 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:40:32,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32 WrapperNode [2024-11-28 03:40:32,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:32,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:32,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:40:32,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:40:32,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,727 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-28 03:40:32,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:32,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:40:32,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:40:32,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:40:32,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,761 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 03:40:32,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:40:32,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:40:32,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:40:32,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:40:32,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (1/1) ... [2024-11-28 03:40:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:32,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:40:32,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-28 03:40:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:40:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:40:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:40:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:40:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:40:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:40:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:40:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:40:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:40:32,918 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:40:32,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:40:33,147 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-28 03:40:33,147 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:40:33,156 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:40:33,157 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 03:40:33,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:33 BoogieIcfgContainer [2024-11-28 03:40:33,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:40:33,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:40:33,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:40:33,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:40:33,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:40:32" (1/3) ... [2024-11-28 03:40:33,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64da0dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:33, skipping insertion in model container [2024-11-28 03:40:33,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:32" (2/3) ... [2024-11-28 03:40:33,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64da0dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:33, skipping insertion in model container [2024-11-28 03:40:33,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:33" (3/3) ... [2024-11-28 03:40:33,167 INFO L128 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2024-11-28 03:40:33,181 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:40:33,183 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array23_pattern.c that has 3 procedures, 43 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-28 03:40:33,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:33,263 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;@389a40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:33,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:40:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:40:33,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:33,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:33,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:33,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1353701566, now seen corresponding path program 1 times [2024-11-28 03:40:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:33,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974587666] [2024-11-28 03:40:33,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974587666] [2024-11-28 03:40:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974587666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:33,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595882605] [2024-11-28 03:40:33,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:33,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:40:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:33,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:40:33,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:40:33,488 INFO L87 Difference]: Start difference. First operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:40:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:33,512 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2024-11-28 03:40:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:40:33,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 03:40:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:33,521 INFO L225 Difference]: With dead ends: 83 [2024-11-28 03:40:33,522 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 03:40:33,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:40:33,530 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:33,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 03:40:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 03:40:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-28 03:40:33,565 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 15 [2024-11-28 03:40:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:33,566 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-28 03:40:33,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:40:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-28 03:40:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:40:33,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:33,568 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:33,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:40:33,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:33,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 572403662, now seen corresponding path program 1 times [2024-11-28 03:40:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148017663] [2024-11-28 03:40:33,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:40:33,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:33,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148017663] [2024-11-28 03:40:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148017663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:33,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:33,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:40:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579419949] [2024-11-28 03:40:33,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:33,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:33,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:33,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:33,997 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:34,043 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2024-11-28 03:40:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-28 03:40:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:34,044 INFO L225 Difference]: With dead ends: 48 [2024-11-28 03:40:34,044 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 03:40:34,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:34,046 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:34,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 03:40:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-28 03:40:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-28 03:40:34,064 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 42 [2024-11-28 03:40:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:34,065 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-28 03:40:34,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-28 03:40:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:40:34,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:34,070 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:34,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:40:34,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:34,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash -251202404, now seen corresponding path program 1 times [2024-11-28 03:40:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:34,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474405976] [2024-11-28 03:40:34,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:40:34,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474405976] [2024-11-28 03:40:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474405976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:34,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:34,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:40:34,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522633083] [2024-11-28 03:40:34,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:34,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:34,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:34,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:34,340 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:34,545 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2024-11-28 03:40:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:40:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-11-28 03:40:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:34,549 INFO L225 Difference]: With dead ends: 90 [2024-11-28 03:40:34,549 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 03:40:34,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:34,551 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:34,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 114 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 03:40:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2024-11-28 03:40:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2024-11-28 03:40:34,562 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 48 [2024-11-28 03:40:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:34,562 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2024-11-28 03:40:34,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2024-11-28 03:40:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:40:34,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:34,565 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:34,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:40:34,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:34,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 651682342, now seen corresponding path program 1 times [2024-11-28 03:40:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563650498] [2024-11-28 03:40:34,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 03:40:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563650498] [2024-11-28 03:40:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563650498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:40:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297250653] [2024-11-28 03:40:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:34,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:34,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:34,801 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:34,930 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-28 03:40:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:40:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2024-11-28 03:40:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:34,931 INFO L225 Difference]: With dead ends: 92 [2024-11-28 03:40:34,932 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 03:40:34,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:34,934 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:34,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 03:40:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-28 03:40:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-28 03:40:34,948 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 52 [2024-11-28 03:40:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:34,950 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-28 03:40:34,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-28 03:40:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:40:34,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:34,952 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:34,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:40:34,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:34,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1109681386, now seen corresponding path program 1 times [2024-11-28 03:40:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624515524] [2024-11-28 03:40:34,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:40:35,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624515524] [2024-11-28 03:40:35,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624515524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:35,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328724174] [2024-11-28 03:40:35,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:35,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:35,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:35,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:40:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:35,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:40:35,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:40:35,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:40:35,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328724174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:35,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:35,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:40:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247789691] [2024-11-28 03:40:35,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:35,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:40:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:35,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:40:35,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:35,590 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:40:35,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:35,785 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2024-11-28 03:40:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:40:35,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2024-11-28 03:40:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:35,787 INFO L225 Difference]: With dead ends: 95 [2024-11-28 03:40:35,787 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 03:40:35,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:35,788 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:35,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 118 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 03:40:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-11-28 03:40:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-28 03:40:35,797 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 54 [2024-11-28 03:40:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:35,797 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-28 03:40:35,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:40:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-28 03:40:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:40:35,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:35,798 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 03:40:35,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:40:35,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:35,999 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:36,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2145998222, now seen corresponding path program 2 times [2024-11-28 03:40:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:36,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27654836] [2024-11-28 03:40:36,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:36,026 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:36,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 03:40:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27654836] [2024-11-28 03:40:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27654836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037119138] [2024-11-28 03:40:36,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:36,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:36,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:36,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:36,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:40:36,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:36,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:36,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:40:36,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:40:36,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:40:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037119138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:36,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:40:36,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121931813] [2024-11-28 03:40:36,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:36,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:40:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:36,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:40:36,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:36,539 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 03:40:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:36,849 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2024-11-28 03:40:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:40:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 58 [2024-11-28 03:40:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:36,851 INFO L225 Difference]: With dead ends: 115 [2024-11-28 03:40:36,854 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 03:40:36,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:40:36,855 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:36,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 140 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 03:40:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2024-11-28 03:40:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 58 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:40:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2024-11-28 03:40:36,880 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 58 [2024-11-28 03:40:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:36,880 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2024-11-28 03:40:36,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 03:40:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2024-11-28 03:40:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:40:36,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:36,882 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:36,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:40:37,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:40:37,082 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:37,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -555557610, now seen corresponding path program 3 times [2024-11-28 03:40:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522220556] [2024-11-28 03:40:37,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:37,176 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:40:37,176 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 03:40:37,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631085126] [2024-11-28 03:40:37,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:37,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:37,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:40:38,313 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:40:38,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:38,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-28 03:40:38,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:38,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:40:38,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:40:38,924 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-28 03:40:38,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-28 03:40:39,082 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-28 03:40:39,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-28 03:40:40,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:40,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:40,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:41,235 INFO L349 Elim1Store]: treesize reduction 508, result has 25.0 percent of original size [2024-11-28 03:40:41,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 122 treesize of output 220 [2024-11-28 03:40:44,990 INFO L349 Elim1Store]: treesize reduction 140, result has 38.1 percent of original size [2024-11-28 03:40:44,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 388 treesize of output 413 [2024-11-28 03:40:46,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:46,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:46,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,168 INFO L349 Elim1Store]: treesize reduction 123, result has 40.0 percent of original size [2024-11-28 03:40:47,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 133 [2024-11-28 03:40:47,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:47,411 INFO L349 Elim1Store]: treesize reduction 110, result has 26.7 percent of original size [2024-11-28 03:40:47,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 108 [2024-11-28 03:40:51,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:40:51,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 69 [2024-11-28 03:40:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:40:51,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:18,488 WARN L286 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:41:33,175 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:43:06,240 WARN L286 SmtUtils]: Spent 24.82s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:43:33,472 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:44:31,037 WARN L286 SmtUtils]: Spent 35.91s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:45:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522220556] [2024-11-28 03:45:13,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:45:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631085126] [2024-11-28 03:45:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631085126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:13,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:45:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2024-11-28 03:45:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428002944] [2024-11-28 03:45:13,456 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:13,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 03:45:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:13,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 03:45:13,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2890, Unknown=22, NotChecked=0, Total=3192 [2024-11-28 03:45:13,459 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 37 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:45:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:24,871 INFO L93 Difference]: Finished difference Result 201 states and 238 transitions. [2024-11-28 03:45:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:45:24,872 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 74 [2024-11-28 03:45:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:24,874 INFO L225 Difference]: With dead ends: 201 [2024-11-28 03:45:24,874 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 03:45:24,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 213.6s TimeCoverageRelationStatistics Valid=361, Invalid=3649, Unknown=22, NotChecked=0, Total=4032 [2024-11-28 03:45:24,877 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 155 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:24,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 479 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 03:45:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 03:45:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2024-11-28 03:45:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 111 states have internal predecessors, (130), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-28 03:45:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2024-11-28 03:45:24,910 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 74 [2024-11-28 03:45:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:24,910 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2024-11-28 03:45:24,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 03:45:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2024-11-28 03:45:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:24,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:24,912 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2024-11-28 03:45:24,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:45:25,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:45:25,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:25,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash -944307661, now seen corresponding path program 1 times [2024-11-28 03:45:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:25,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118198470] [2024-11-28 03:45:25,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 03:45:25,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118198470] [2024-11-28 03:45:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118198470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379813797] [2024-11-28 03:45:25,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:25,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:25,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:25,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:45:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:25,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:45:25,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 03:45:26,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 03:45:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379813797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:26,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:26,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 7] total 24 [2024-11-28 03:45:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697833089] [2024-11-28 03:45:26,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:26,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:45:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:26,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:45:26,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:45:26,644 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 24 states have internal predecessors, (83), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:27,825 INFO L93 Difference]: Finished difference Result 271 states and 328 transitions. [2024-11-28 03:45:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:45:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 24 states have internal predecessors, (83), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 74 [2024-11-28 03:45:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:27,829 INFO L225 Difference]: With dead ends: 271 [2024-11-28 03:45:27,829 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 03:45:27,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:45:27,830 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 113 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:27,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 453 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:45:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 03:45:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 133. [2024-11-28 03:45:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 113 states have (on average 1.168141592920354) internal successors, (132), 114 states have internal predecessors, (132), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 03:45:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2024-11-28 03:45:27,883 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 74 [2024-11-28 03:45:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:27,883 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2024-11-28 03:45:27,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.608695652173913) internal successors, (83), 24 states have internal predecessors, (83), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2024-11-28 03:45:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:27,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:27,888 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:27,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:28,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:45:28,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:28,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -280797996, now seen corresponding path program 1 times [2024-11-28 03:45:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565251943] [2024-11-28 03:45:28,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:45:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565251943] [2024-11-28 03:45:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565251943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508703363] [2024-11-28 03:45:28,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:28,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:28,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:28,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:45:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:28,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:45:28,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:45:28,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:45:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508703363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:45:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:45:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379083704] [2024-11-28 03:45:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:28,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:45:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:28,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:45:28,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:45:28,349 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:45:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:28,396 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-28 03:45:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:45:28,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-28 03:45:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:28,398 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:45:28,399 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 03:45:28,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:45:28,399 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:28,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:45:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 03:45:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-28 03:45:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 114 states have internal predecessors, (130), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 03:45:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2024-11-28 03:45:28,434 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 74 [2024-11-28 03:45:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:28,435 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2024-11-28 03:45:28,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:45:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2024-11-28 03:45:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:28,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:28,436 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2024-11-28 03:45:28,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:45:28,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:28,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:28,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1394742645, now seen corresponding path program 1 times [2024-11-28 03:45:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976292390] [2024-11-28 03:45:28,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:45:28,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:28,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976292390] [2024-11-28 03:45:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976292390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112482692] [2024-11-28 03:45:28,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:28,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:28,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:28,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:45:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:28,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:45:28,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:45:28,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:45:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112482692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:45:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 03:45:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532903424] [2024-11-28 03:45:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:28,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:45:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:28,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:45:28,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:28,846 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:45:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:28,889 INFO L93 Difference]: Finished difference Result 183 states and 213 transitions. [2024-11-28 03:45:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:45:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-28 03:45:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:28,890 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:45:28,890 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 03:45:28,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:28,904 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:28,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:45:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 03:45:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-28 03:45:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 114 states have internal predecessors, (129), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 03:45:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2024-11-28 03:45:28,935 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 74 [2024-11-28 03:45:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:28,936 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2024-11-28 03:45:28,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:45:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2024-11-28 03:45:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:28,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:28,937 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2024-11-28 03:45:28,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:45:29,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:29,142 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:29,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1669502259, now seen corresponding path program 1 times [2024-11-28 03:45:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:29,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993778169] [2024-11-28 03:45:29,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:45:29,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993778169] [2024-11-28 03:45:29,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993778169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:29,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912637345] [2024-11-28 03:45:29,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:29,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:29,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:29,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:29,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:45:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:29,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:45:29,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:45:30,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 03:45:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912637345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:30,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:30,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 7] total 22 [2024-11-28 03:45:30,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588552775] [2024-11-28 03:45:30,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:30,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:45:30,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:30,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:45:30,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:45:30,328 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:31,240 INFO L93 Difference]: Finished difference Result 261 states and 307 transitions. [2024-11-28 03:45:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:45:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 74 [2024-11-28 03:45:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:31,243 INFO L225 Difference]: With dead ends: 261 [2024-11-28 03:45:31,243 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 03:45:31,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:45:31,244 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 90 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:31,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 328 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:45:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 03:45:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 135. [2024-11-28 03:45:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 115 states have internal predecessors, (131), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 03:45:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2024-11-28 03:45:31,277 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 74 [2024-11-28 03:45:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:31,277 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2024-11-28 03:45:31,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2024-11-28 03:45:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:31,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:31,278 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:31,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:45:31,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:31,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:31,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1414765714, now seen corresponding path program 1 times [2024-11-28 03:45:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:31,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929094844] [2024-11-28 03:45:31,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:45:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929094844] [2024-11-28 03:45:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929094844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:31,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:45:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:45:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145931708] [2024-11-28 03:45:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:31,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:45:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:31,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:45:31,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:31,562 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 03:45:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:31,629 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-11-28 03:45:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:45:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 74 [2024-11-28 03:45:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:31,631 INFO L225 Difference]: With dead ends: 189 [2024-11-28 03:45:31,631 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 03:45:31,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:31,632 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:31,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:45:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 03:45:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-28 03:45:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 116 states have internal predecessors, (133), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 03:45:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2024-11-28 03:45:31,666 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 74 [2024-11-28 03:45:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:31,667 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2024-11-28 03:45:31,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 03:45:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2024-11-28 03:45:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:45:31,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:31,668 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:31,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:45:31,668 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:31,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1280752208, now seen corresponding path program 1 times [2024-11-28 03:45:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:31,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839154957] [2024-11-28 03:45:31,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 03:45:32,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839154957] [2024-11-28 03:45:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839154957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60956269] [2024-11-28 03:45:32,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:32,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:32,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:45:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:32,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:45:32,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:45:32,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 03:45:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60956269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:33,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:33,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 26 [2024-11-28 03:45:33,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560140202] [2024-11-28 03:45:33,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:33,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:45:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:33,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:45:33,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:45:33,187 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 6 states have call successors, (13), 3 states have call predecessors, (13), 9 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:34,037 INFO L93 Difference]: Finished difference Result 277 states and 316 transitions. [2024-11-28 03:45:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:45:34,038 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 6 states have call successors, (13), 3 states have call predecessors, (13), 9 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 74 [2024-11-28 03:45:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:34,039 INFO L225 Difference]: With dead ends: 277 [2024-11-28 03:45:34,039 INFO L226 Difference]: Without dead ends: 219 [2024-11-28 03:45:34,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:45:34,040 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 71 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:34,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 449 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:45:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-28 03:45:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 173. [2024-11-28 03:45:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 146 states have (on average 1.143835616438356) internal successors, (167), 145 states have internal predecessors, (167), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-28 03:45:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 198 transitions. [2024-11-28 03:45:34,095 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 198 transitions. Word has length 74 [2024-11-28 03:45:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:34,096 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 198 transitions. [2024-11-28 03:45:34,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 6 states have call successors, (13), 3 states have call predecessors, (13), 9 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 03:45:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 198 transitions. [2024-11-28 03:45:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:45:34,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:34,097 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:34,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:45:34,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:45:34,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:34,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 922432730, now seen corresponding path program 4 times [2024-11-28 03:45:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863764537] [2024-11-28 03:45:34,298 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:34,321 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:34,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:45:34,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863764537] [2024-11-28 03:45:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863764537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235546890] [2024-11-28 03:45:34,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:34,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:34,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:34,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:34,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:45:34,587 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:34,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:34,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:34,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:45:34,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:45:34,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235546890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:34,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:34,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:45:34,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742507492] [2024-11-28 03:45:34,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:34,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:34,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:34,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:34,865 INFO L87 Difference]: Start difference. First operand 173 states and 198 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:35,321 INFO L93 Difference]: Finished difference Result 363 states and 412 transitions. [2024-11-28 03:45:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:45:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2024-11-28 03:45:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:35,324 INFO L225 Difference]: With dead ends: 363 [2024-11-28 03:45:35,324 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 03:45:35,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:45:35,325 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 50 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:35,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 334 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:45:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 03:45:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 235. [2024-11-28 03:45:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 196 states have (on average 1.1224489795918366) internal successors, (220), 194 states have internal predecessors, (220), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 03:45:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2024-11-28 03:45:35,384 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 76 [2024-11-28 03:45:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:35,385 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2024-11-28 03:45:35,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2024-11-28 03:45:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:45:35,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:35,386 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:35,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:45:35,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:45:35,587 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:35,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash 521291482, now seen corresponding path program 5 times [2024-11-28 03:45:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607215460] [2024-11-28 03:45:35,588 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:35,621 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:45:35,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:45:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607215460] [2024-11-28 03:45:35,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607215460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27100448] [2024-11-28 03:45:35,773 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:35,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:35,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:35,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:45:35,875 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:45:35,875 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:35,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:35,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:45:36,090 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:45:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27100448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:36,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:45:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953273213] [2024-11-28 03:45:36,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:36,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:45:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:36,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:45:36,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:45:36,251 INFO L87 Difference]: Start difference. First operand 235 states and 265 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:36,516 INFO L93 Difference]: Finished difference Result 269 states and 300 transitions. [2024-11-28 03:45:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:45:36,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2024-11-28 03:45:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:36,518 INFO L225 Difference]: With dead ends: 269 [2024-11-28 03:45:36,519 INFO L226 Difference]: Without dead ends: 187 [2024-11-28 03:45:36,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:45:36,519 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:36,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 143 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:45:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-28 03:45:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 172. [2024-11-28 03:45:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 147 states have (on average 1.1020408163265305) internal successors, (162), 145 states have internal predecessors, (162), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:45:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2024-11-28 03:45:36,555 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 76 [2024-11-28 03:45:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:36,555 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2024-11-28 03:45:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2024-11-28 03:45:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:45:36,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:36,556 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:36,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:36,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:45:36,761 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:36,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2085578202, now seen corresponding path program 6 times [2024-11-28 03:45:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461857886] [2024-11-28 03:45:36,761 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:36,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:36,799 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 03:45:36,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:45:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461857886] [2024-11-28 03:45:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461857886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58571921] [2024-11-28 03:45:36,970 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:36,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:36,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:36,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:36,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:45:37,352 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 03:45:37,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:37,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:37,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:45:37,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:45:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58571921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:37,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 03:45:37,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398867980] [2024-11-28 03:45:37,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:37,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:45:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:37,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:45:37,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:45:37,845 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:38,493 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2024-11-28 03:45:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:45:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2024-11-28 03:45:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:38,495 INFO L225 Difference]: With dead ends: 199 [2024-11-28 03:45:38,495 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:45:38,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:45:38,496 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 38 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:38,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 321 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:45:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:45:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 182. [2024-11-28 03:45:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 157 states have (on average 1.1019108280254777) internal successors, (173), 155 states have internal predecessors, (173), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:45:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 202 transitions. [2024-11-28 03:45:38,527 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 202 transitions. Word has length 82 [2024-11-28 03:45:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:38,528 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 202 transitions. [2024-11-28 03:45:38,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 202 transitions. [2024-11-28 03:45:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:45:38,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:38,529 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:38,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:38,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:45:38,730 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:38,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -476743128, now seen corresponding path program 7 times [2024-11-28 03:45:38,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965999289] [2024-11-28 03:45:38,731 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:45:38,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:38,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965999289] [2024-11-28 03:45:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965999289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776636588] [2024-11-28 03:45:38,932 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:38,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:38,934 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:38,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:45:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:39,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:39,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 62 proven. 17 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:45:39,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 17 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:45:39,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776636588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:39,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:39,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:45:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042422396] [2024-11-28 03:45:39,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:39,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:39,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:39,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:39,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:39,563 INFO L87 Difference]: Start difference. First operand 182 states and 202 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:40,161 INFO L93 Difference]: Finished difference Result 212 states and 231 transitions. [2024-11-28 03:45:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:45:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2024-11-28 03:45:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:40,163 INFO L225 Difference]: With dead ends: 212 [2024-11-28 03:45:40,163 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:45:40,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:45:40,163 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 17 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:40,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 305 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:45:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:45:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 173. [2024-11-28 03:45:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 148 states have (on average 1.0945945945945945) internal successors, (162), 146 states have internal predecessors, (162), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:45:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2024-11-28 03:45:40,203 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 82 [2024-11-28 03:45:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:40,203 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2024-11-28 03:45:40,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2024-11-28 03:45:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 03:45:40,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:40,205 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:40,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:40,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:45:40,406 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:40,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1335717764, now seen corresponding path program 8 times [2024-11-28 03:45:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:40,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838886291] [2024-11-28 03:45:40,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:40,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:40,429 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:40,429 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-28 03:45:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838886291] [2024-11-28 03:45:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838886291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822037910] [2024-11-28 03:45:40,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:40,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:40,640 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:45:40,755 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:40,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:40,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:40,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-28 03:45:40,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-28 03:45:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822037910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:41,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:41,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 03:45:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759633654] [2024-11-28 03:45:41,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:41,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:45:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:41,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:45:41,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:45:41,131 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:41,565 INFO L93 Difference]: Finished difference Result 269 states and 300 transitions. [2024-11-28 03:45:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:45:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-11-28 03:45:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:41,567 INFO L225 Difference]: With dead ends: 269 [2024-11-28 03:45:41,567 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 03:45:41,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:45:41,568 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 69 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:41,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 221 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:45:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 03:45:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 183. [2024-11-28 03:45:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 158 states have (on average 1.0949367088607596) internal successors, (173), 156 states have internal predecessors, (173), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:45:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2024-11-28 03:45:41,624 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 92 [2024-11-28 03:45:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:41,625 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2024-11-28 03:45:41,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:45:41,625 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2024-11-28 03:45:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 03:45:41,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:41,626 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-28 03:45:41,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:45:41,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:45:41,827 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:41,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1316011734, now seen corresponding path program 1 times [2024-11-28 03:45:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143576752] [2024-11-28 03:45:41,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:45:41,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625482868] [2024-11-28 03:45:41,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:41,871 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:41,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:45:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:45,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-28 03:45:45,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:45,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:45:45,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:45:45,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:45:45,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:45:45,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:45:45,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:45:47,406 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-11-28 03:45:47,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-11-28 03:45:50,908 INFO L349 Elim1Store]: treesize reduction 140, result has 38.1 percent of original size [2024-11-28 03:45:50,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 316 treesize of output 337 [2024-11-28 03:45:52,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,806 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2024-11-28 03:45:52,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 82 [2024-11-28 03:45:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:52,911 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2024-11-28 03:45:52,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 82 [2024-11-28 03:45:57,759 INFO L349 Elim1Store]: treesize reduction 704, result has 34.1 percent of original size [2024-11-28 03:45:57,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 6 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 210 case distinctions, treesize of input 268 treesize of output 500 [2024-11-28 03:46:26,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 481 treesize of output 379 [2024-11-28 03:46:26,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:26,330 INFO L349 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2024-11-28 03:46:26,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 379 treesize of output 396 [2024-11-28 03:46:33,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:46:33,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 123 [2024-11-28 03:46:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 19 proven. 104 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:46:33,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143576752] [2024-11-28 03:46:37,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:46:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625482868] [2024-11-28 03:46:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625482868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:37,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:46:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2024-11-28 03:46:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814241131] [2024-11-28 03:46:37,270 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:37,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:46:37,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:37,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:46:37,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=4400, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:46:37,272 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 53 states, 48 states have (on average 1.6875) internal successors, (81), 50 states have internal predecessors, (81), 8 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 03:46:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:42,545 INFO L93 Difference]: Finished difference Result 246 states and 271 transitions. [2024-11-28 03:46:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 03:46:42,546 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 1.6875) internal successors, (81), 50 states have internal predecessors, (81), 8 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 102 [2024-11-28 03:46:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:42,548 INFO L225 Difference]: With dead ends: 246 [2024-11-28 03:46:42,548 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 03:46:42,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=740, Invalid=5580, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 03:46:42,550 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:42,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 607 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 03:46:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 03:46:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2024-11-28 03:46:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 175 states have (on average 1.0914285714285714) internal successors, (191), 173 states have internal predecessors, (191), 18 states have call successors, (18), 14 states have call predecessors, (18), 13 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-28 03:46:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2024-11-28 03:46:42,606 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 102 [2024-11-28 03:46:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:42,607 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2024-11-28 03:46:42,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 1.6875) internal successors, (81), 50 states have internal predecessors, (81), 8 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 03:46:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2024-11-28 03:46:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 03:46:42,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:42,608 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-28 03:46:42,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:42,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:42,809 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:42,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1450025240, now seen corresponding path program 1 times [2024-11-28 03:46:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642887675] [2024-11-28 03:46:42,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-28 03:46:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642887675] [2024-11-28 03:46:42,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642887675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:42,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:42,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:46:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730181422] [2024-11-28 03:46:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:42,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:46:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:42,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:46:42,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:46:42,900 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 03:46:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:42,979 INFO L93 Difference]: Finished difference Result 313 states and 347 transitions. [2024-11-28 03:46:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:46:42,980 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 102 [2024-11-28 03:46:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:42,981 INFO L225 Difference]: With dead ends: 313 [2024-11-28 03:46:42,981 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 03:46:42,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:46:42,982 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:42,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:46:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 03:46:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-28 03:46:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 175 states have (on average 1.0742857142857143) internal successors, (188), 173 states have internal predecessors, (188), 18 states have call successors, (18), 14 states have call predecessors, (18), 13 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-28 03:46:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 225 transitions. [2024-11-28 03:46:43,047 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 225 transitions. Word has length 102 [2024-11-28 03:46:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:43,047 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 225 transitions. [2024-11-28 03:46:43,047 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 03:46:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 225 transitions. [2024-11-28 03:46:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 03:46:43,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:43,049 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:43,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:46:43,049 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:43,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2077492654, now seen corresponding path program 9 times [2024-11-28 03:46:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:43,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196650951] [2024-11-28 03:46:43,050 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:46:43,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:43,134 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:46:43,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 03:46:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428505411] [2024-11-28 03:46:43,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:46:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:43,146 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:43,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53759380-e3d3-4498-b4de-186ed42cbf2d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:46:53,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:46:53,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:53,204 WARN L254 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-11-28 03:46:53,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:53,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:46:53,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:46:53,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:46:53,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:46:53,819 INFO L349 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2024-11-28 03:46:53,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 47 [2024-11-28 03:46:54,008 INFO L349 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2024-11-28 03:46:54,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 58 treesize of output 66 [2024-11-28 03:46:54,305 INFO L349 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2024-11-28 03:46:54,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 74 treesize of output 85 [2024-11-28 03:46:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,173 INFO L349 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2024-11-28 03:46:55,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 91 treesize of output 105 [2024-11-28 03:46:55,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,552 INFO L349 Elim1Store]: treesize reduction 144, result has 9.4 percent of original size [2024-11-28 03:46:55,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 104 treesize of output 121 [2024-11-28 03:46:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:55,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:46:56,061 INFO L349 Elim1Store]: treesize reduction 190, result has 10.4 percent of original size [2024-11-28 03:46:56,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 117 treesize of output 137 [2024-11-28 03:47:00,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:00,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:47:02,137 INFO L349 Elim1Store]: treesize reduction 965, result has 27.7 percent of original size [2024-11-28 03:47:02,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 30 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 171 case distinctions, treesize of input 256 treesize of output 439 [2024-11-28 03:47:52,748 WARN L286 SmtUtils]: Spent 19.66s on a formula simplification. DAG size of input: 661 DAG size of output: 148 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 03:47:52,748 INFO L349 Elim1Store]: treesize reduction 1152, result has 19.2 percent of original size [2024-11-28 03:47:52,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 152 case distinctions, treesize of input 2502 treesize of output 2488 [2024-11-28 03:52:57,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,837 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:52:57,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:52:57,844 INFO L224 Elim1Store]: Index analysis took 124 ms [2024-11-28 03:53:05,216 WARN L286 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 494 DAG size of output: 102 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 03:53:05,216 INFO L349 Elim1Store]: treesize reduction 2005, result has 10.5 percent of original size [2024-11-28 03:53:05,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 18 select indices, 18 select index equivalence classes, 37 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 143 case distinctions, treesize of input 4808 treesize of output 4636