./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_running-1.i --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_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/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_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_running-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/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_76a89d56-b4d4-4ae5-a745-433d79e71927/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 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:24:28,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:24:28,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:24:28,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:24:28,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:24:29,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:24:29,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:24:29,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:24:29,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:24:29,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:24:29,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:24:29,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:24:29,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:24:29,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:24:29,014 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:24:29,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:24:29,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:24:29,015 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:24:29,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:24:29,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:24:29,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:24:29,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:24:29,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:24:29,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:24:29,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:24:29,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:24:29,017 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:24:29,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:24:29,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:24:29,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:24:29,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:24:29,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:24:29,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:29,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:24:29,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:24:29,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:24:29,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:24:29,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:29,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:24:29,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:24:29,020 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:24:29,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:24:29,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:24:29,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:24:29,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:24:29,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:24:29,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:24:29,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:24:29,022 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_76a89d56-b4d4-4ae5-a745-433d79e71927/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 -> 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 [2024-11-28 03:24:29,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:24:29,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:24:29,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:24:29,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:24:29,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:24:29,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-28 03:24:32,928 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfca3404/ee53c49664514835baae71679bd82036/FLAG7c18b080d [2024-11-28 03:24:33,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:24:33,273 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-28 03:24:33,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfca3404/ee53c49664514835baae71679bd82036/FLAG7c18b080d [2024-11-28 03:24:33,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfca3404/ee53c49664514835baae71679bd82036 [2024-11-28 03:24:33,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:24:33,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:24:33,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:24:33,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:24:33,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:24:33,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6105c26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33, skipping insertion in model container [2024-11-28 03:24:33,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:24:33,553 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_76a89d56-b4d4-4ae5-a745-433d79e71927/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2024-11-28 03:24:33,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:24:33,594 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:24:33,608 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_76a89d56-b4d4-4ae5-a745-433d79e71927/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2024-11-28 03:24:33,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:24:33,647 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:24:33,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33 WrapperNode [2024-11-28 03:24:33,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:24:33,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:24:33,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:24:33,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:24:33,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,698 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-28 03:24:33,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:24:33,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:24:33,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:24:33,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:24:33,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,735 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-28 03:24:33,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,747 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:24:33,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:24:33,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:24:33,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:24:33,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (1/1) ... [2024-11-28 03:24:33,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:24:33,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:33,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:24:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:24:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:24:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:24:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:24:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:24:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:24:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:24:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:24:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:24:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:24:33,990 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:24:33,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:24:34,290 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-28 03:24:34,290 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:24:34,306 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:24:34,307 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:24:34,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:24:34 BoogieIcfgContainer [2024-11-28 03:24:34,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:24:34,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:24:34,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:24:34,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:24:34,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:24:33" (1/3) ... [2024-11-28 03:24:34,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707209f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:24:34, skipping insertion in model container [2024-11-28 03:24:34,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:24:33" (2/3) ... [2024-11-28 03:24:34,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707209f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:24:34, skipping insertion in model container [2024-11-28 03:24:34,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:24:34" (3/3) ... [2024-11-28 03:24:34,323 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2024-11-28 03:24:34,344 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:24:34,348 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_running-1.i that has 1 procedures, 26 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 03:24:34,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:24:34,442 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;@7242fb4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:24:34,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:24:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:24:34,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:34,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:34,456 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:34,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1484999631, now seen corresponding path program 1 times [2024-11-28 03:24:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:34,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796746866] [2024-11-28 03:24:34,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:34,699 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 03:24:34,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796746866] [2024-11-28 03:24:34,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796746866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:34,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:24:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:24:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105901345] [2024-11-28 03:24:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:34,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:34,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:34,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:34,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:34,743 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:34,869 INFO L93 Difference]: Finished difference Result 62 states and 93 transitions. [2024-11-28 03:24:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:24:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:34,880 INFO L225 Difference]: With dead ends: 62 [2024-11-28 03:24:34,881 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:24:34,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:24:34,888 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:34,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:24:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:24:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2024-11-28 03:24:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-28 03:24:34,935 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2024-11-28 03:24:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:34,936 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-28 03:24:34,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-28 03:24:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:24:34,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:34,938 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:34,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:24:34,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:34,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1334757353, now seen corresponding path program 1 times [2024-11-28 03:24:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606900729] [2024-11-28 03:24:34,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:24:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606900729] [2024-11-28 03:24:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606900729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:35,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071619435] [2024-11-28 03:24:35,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:35,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:35,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:24:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:35,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:24:35,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:24:35,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:24:35,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071619435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:35,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:24:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 03:24:35,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126735552] [2024-11-28 03:24:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:35,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:24:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:35,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:24:35,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:24:35,400 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:35,425 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-28 03:24:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:24:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-28 03:24:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:35,430 INFO L225 Difference]: With dead ends: 38 [2024-11-28 03:24:35,430 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 03:24:35,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:24:35,431 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:35,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:24:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 03:24:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 03:24:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-28 03:24:35,443 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 24 [2024-11-28 03:24:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:35,443 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-28 03:24:35,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-28 03:24:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:24:35,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:35,444 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:35,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:35,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:35,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:35,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1277499051, now seen corresponding path program 1 times [2024-11-28 03:24:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:35,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200066917] [2024-11-28 03:24:35,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:35,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:24:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200066917] [2024-11-28 03:24:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200066917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693912718] [2024-11-28 03:24:35,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:35,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:35,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:35,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:24:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:35,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:24:35,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:24:36,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:24:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693912718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:36,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:24:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032458246] [2024-11-28 03:24:36,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:36,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:24:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:36,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:24:36,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:24:36,070 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:36,354 INFO L93 Difference]: Finished difference Result 92 states and 129 transitions. [2024-11-28 03:24:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:24:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-28 03:24:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:36,357 INFO L225 Difference]: With dead ends: 92 [2024-11-28 03:24:36,357 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:24:36,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:24:36,358 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 107 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:36,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 48 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:24:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:24:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 03:24:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-11-28 03:24:36,369 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 24 [2024-11-28 03:24:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:36,369 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-11-28 03:24:36,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-11-28 03:24:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:24:36,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:36,373 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:36,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:36,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 03:24:36,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:36,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash 71953356, now seen corresponding path program 2 times [2024-11-28 03:24:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452396183] [2024-11-28 03:24:36,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:24:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:36,649 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:24:36,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:24:37,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:37,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452396183] [2024-11-28 03:24:37,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452396183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040265726] [2024-11-28 03:24:37,037 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:24:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:37,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:24:37,242 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:24:37,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:37,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:24:37,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:24:37,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:24:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040265726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:24:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344703377] [2024-11-28 03:24:37,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:37,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:24:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:37,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:24:37,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:24:37,426 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:37,856 INFO L93 Difference]: Finished difference Result 221 states and 312 transitions. [2024-11-28 03:24:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:24:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 03:24:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:37,859 INFO L225 Difference]: With dead ends: 221 [2024-11-28 03:24:37,861 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 03:24:37,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:24:37,863 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 302 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:37,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 88 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:24:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 03:24:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-28 03:24:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.33125) internal successors, (213), 160 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 213 transitions. [2024-11-28 03:24:37,895 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 213 transitions. Word has length 66 [2024-11-28 03:24:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:37,895 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 213 transitions. [2024-11-28 03:24:37,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 213 transitions. [2024-11-28 03:24:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 03:24:37,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:37,901 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:37,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:38,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:38,102 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:38,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1735628102, now seen corresponding path program 3 times [2024-11-28 03:24:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:38,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954305002] [2024-11-28 03:24:38,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:38,190 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:24:38,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 37 proven. 82 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-28 03:24:39,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954305002] [2024-11-28 03:24:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954305002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545507064] [2024-11-28 03:24:39,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:39,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:39,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:39,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:24:39,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:24:39,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:39,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:24:39,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:39,591 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 15 treesize of output 11 [2024-11-28 03:24:40,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:24:40,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2024-11-28 03:24:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-28 03:24:40,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:40,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 15 [2024-11-28 03:24:40,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 12 treesize of output 8 [2024-11-28 03:24:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 37 proven. 73 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-28 03:24:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545507064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:40,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 24 [2024-11-28 03:24:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88338451] [2024-11-28 03:24:40,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:40,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:24:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:40,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:24:40,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:24:40,702 INFO L87 Difference]: Start difference. First operand 161 states and 213 transitions. Second operand has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:41,400 INFO L93 Difference]: Finished difference Result 416 states and 564 transitions. [2024-11-28 03:24:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:24:41,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-28 03:24:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:41,405 INFO L225 Difference]: With dead ends: 416 [2024-11-28 03:24:41,406 INFO L226 Difference]: Without dead ends: 412 [2024-11-28 03:24:41,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 286 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:24:41,408 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 276 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:41,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 115 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:24:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-28 03:24:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 256. [2024-11-28 03:24:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.3764705882352941) internal successors, (351), 255 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 351 transitions. [2024-11-28 03:24:41,450 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 351 transitions. Word has length 150 [2024-11-28 03:24:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:41,451 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 351 transitions. [2024-11-28 03:24:41,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 351 transitions. [2024-11-28 03:24:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 03:24:41,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:41,460 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:41,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:41,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:41,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:41,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1055569732, now seen corresponding path program 1 times [2024-11-28 03:24:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263383663] [2024-11-28 03:24:41,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2024-11-28 03:24:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263383663] [2024-11-28 03:24:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263383663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734498699] [2024-11-28 03:24:42,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:24:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:42,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:42,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:42,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:24:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:42,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:24:42,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2024-11-28 03:24:42,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2024-11-28 03:24:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734498699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:43,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:43,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 03:24:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775449225] [2024-11-28 03:24:43,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:43,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:24:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:43,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:24:43,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:24:43,046 INFO L87 Difference]: Start difference. First operand 256 states and 351 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:43,959 INFO L93 Difference]: Finished difference Result 969 states and 1390 transitions. [2024-11-28 03:24:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:24:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-28 03:24:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:43,965 INFO L225 Difference]: With dead ends: 969 [2024-11-28 03:24:43,966 INFO L226 Difference]: Without dead ends: 736 [2024-11-28 03:24:43,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:24:43,968 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 752 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:43,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 158 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:24:43,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-28 03:24:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 544. [2024-11-28 03:24:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 1.3756906077348066) internal successors, (747), 543 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 747 transitions. [2024-11-28 03:24:44,083 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 747 transitions. Word has length 150 [2024-11-28 03:24:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:44,085 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 747 transitions. [2024-11-28 03:24:44,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 747 transitions. [2024-11-28 03:24:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-28 03:24:44,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:44,098 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:44,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:24:44,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:44,302 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:44,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -270848360, now seen corresponding path program 2 times [2024-11-28 03:24:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082032559] [2024-11-28 03:24:44,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:24:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:44,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:24:44,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2024-11-28 03:24:46,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082032559] [2024-11-28 03:24:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082032559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749311159] [2024-11-28 03:24:46,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:24:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:46,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:46,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:24:46,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:24:46,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:46,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:24:46,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2024-11-28 03:24:47,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2024-11-28 03:24:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749311159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:48,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:48,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 03:24:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753629216] [2024-11-28 03:24:48,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:48,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:24:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:48,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:24:48,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:24:48,388 INFO L87 Difference]: Start difference. First operand 544 states and 747 transitions. Second operand has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:50,946 INFO L93 Difference]: Finished difference Result 1989 states and 2854 transitions. [2024-11-28 03:24:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:24:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-28 03:24:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:50,954 INFO L225 Difference]: With dead ends: 1989 [2024-11-28 03:24:50,954 INFO L226 Difference]: Without dead ends: 1492 [2024-11-28 03:24:50,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:24:50,958 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2792 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:50,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 312 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:24:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-28 03:24:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1120. [2024-11-28 03:24:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.3753351206434317) internal successors, (1539), 1119 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1539 transitions. [2024-11-28 03:24:51,064 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1539 transitions. Word has length 318 [2024-11-28 03:24:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:51,064 INFO L471 AbstractCegarLoop]: Abstraction has 1120 states and 1539 transitions. [2024-11-28 03:24:51,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1539 transitions. [2024-11-28 03:24:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-28 03:24:51,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:51,089 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:51,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:24:51,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:51,290 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:51,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 660773456, now seen corresponding path program 3 times [2024-11-28 03:24:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:51,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113327537] [2024-11-28 03:24:51,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:51,482 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:24:51,482 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 268 proven. 628 refuted. 0 times theorem prover too weak. 13732 trivial. 0 not checked. [2024-11-28 03:24:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113327537] [2024-11-28 03:24:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113327537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51367972] [2024-11-28 03:24:51,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:51,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:51,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:24:52,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:24:52,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:52,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:24:52,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:52,347 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 15 treesize of output 11 [2024-11-28 03:24:52,401 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 28 treesize of output 27 [2024-11-28 03:24:54,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:24:54,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 36 [2024-11-28 03:24:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 269 proven. 627 refuted. 0 times theorem prover too weak. 13732 trivial. 0 not checked. [2024-11-28 03:24:54,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 268 proven. 628 refuted. 0 times theorem prover too weak. 13732 trivial. 0 not checked. [2024-11-28 03:24:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51367972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:56,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2024-11-28 03:24:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100643820] [2024-11-28 03:24:56,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:56,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:24:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:56,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:24:56,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:24:56,102 INFO L87 Difference]: Start difference. First operand 1120 states and 1539 transitions. Second operand has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:57,499 INFO L93 Difference]: Finished difference Result 5543 states and 7794 transitions. [2024-11-28 03:24:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:24:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 654 [2024-11-28 03:24:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:57,527 INFO L225 Difference]: With dead ends: 5543 [2024-11-28 03:24:57,527 INFO L226 Difference]: Without dead ends: 5539 [2024-11-28 03:24:57,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1296 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:24:57,532 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 396 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:57,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 147 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:24:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2024-11-28 03:24:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 1970. [2024-11-28 03:24:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 1.4062976130015237) internal successors, (2769), 1969 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2769 transitions. [2024-11-28 03:24:57,761 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2769 transitions. Word has length 654 [2024-11-28 03:24:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:57,765 INFO L471 AbstractCegarLoop]: Abstraction has 1970 states and 2769 transitions. [2024-11-28 03:24:57,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 24 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2769 transitions. [2024-11-28 03:24:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-28 03:24:57,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:57,793 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:57,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:57,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:57,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:57,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:57,999 INFO L85 PathProgramCache]: Analyzing trace with hash -927574446, now seen corresponding path program 4 times [2024-11-28 03:24:57,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:57,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954959501] [2024-11-28 03:24:57,999 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:24:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:58,643 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:24:58,643 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:25:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 226 proven. 12286 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-28 03:25:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:25:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954959501] [2024-11-28 03:25:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954959501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:25:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466389538] [2024-11-28 03:25:15,666 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:25:15,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:25:15,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:25:15,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:25:15,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:25:16,251 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:25:16,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:25:16,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-28 03:25:16,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:25:16,619 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 13 treesize of output 9 [2024-11-28 03:25:16,788 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-28 03:25:16,788 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 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 03:25:17,240 INFO L349 Elim1Store]: treesize reduction 46, result has 31.3 percent of original size [2024-11-28 03:25:17,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2024-11-28 03:25:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 915 proven. 11579 refuted. 0 times theorem prover too weak. 2134 trivial. 0 not checked. [2024-11-28 03:25:39,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:25:48,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 16 treesize of output 14 [2024-11-28 03:25:48,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 12 [2024-11-28 03:25:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 914 proven. 11574 refuted. 0 times theorem prover too weak. 2140 trivial. 0 not checked. [2024-11-28 03:25:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466389538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:25:48,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:25:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 96, 93] total 195 [2024-11-28 03:25:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16900310] [2024-11-28 03:25:48,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:25:48,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2024-11-28 03:25:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:25:48,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2024-11-28 03:25:48,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=37195, Unknown=1, NotChecked=0, Total=37830 [2024-11-28 03:25:48,740 INFO L87 Difference]: Start difference. First operand 1970 states and 2769 transitions. Second operand has 195 states, 195 states have (on average 6.574358974358974) internal successors, (1282), 195 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:25,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:26:34,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:26:48,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:26:52,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:12,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:16,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:20,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:25,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:27:34,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:29:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:31,107 INFO L93 Difference]: Finished difference Result 7276 states and 10679 transitions. [2024-11-28 03:29:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 573 states. [2024-11-28 03:29:31,109 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 6.574358974358974) internal successors, (1282), 195 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 654 [2024-11-28 03:29:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:31,127 INFO L225 Difference]: With dead ends: 7276 [2024-11-28 03:29:31,127 INFO L226 Difference]: Without dead ends: 5617 [2024-11-28 03:29:31,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1212 SyntacticMatches, 2 SemanticMatches, 665 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138182 ImplicationChecksByTransitivity, 158.6s TimeCoverageRelationStatistics Valid=5984, Invalid=438224, Unknown=14, NotChecked=0, Total=444222 [2024-11-28 03:29:31,160 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 4818 mSDsluCounter, 45213 mSDsCounter, 0 mSdLazyCounter, 106541 mSolverCounterSat, 539 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 45501 SdHoareTripleChecker+Invalid, 107089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 106541 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:31,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 45501 Invalid, 107089 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [539 Valid, 106541 Invalid, 9 Unknown, 0 Unchecked, 92.0s Time] [2024-11-28 03:29:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2024-11-28 03:29:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 4827. [2024-11-28 03:29:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4826 states have (on average 1.3856195607128057) internal successors, (6687), 4826 states have internal predecessors, (6687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6687 transitions. [2024-11-28 03:29:31,464 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6687 transitions. Word has length 654 [2024-11-28 03:29:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:31,466 INFO L471 AbstractCegarLoop]: Abstraction has 4827 states and 6687 transitions. [2024-11-28 03:29:31,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 6.574358974358974) internal successors, (1282), 195 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6687 transitions. [2024-11-28 03:29:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-28 03:29:31,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:31,482 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 43, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:31,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:29:31,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:31,686 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:31,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash -787025836, now seen corresponding path program 5 times [2024-11-28 03:29:31,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700302288] [2024-11-28 03:29:31,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:29:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:35,244 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 03:29:35,245 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:29:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14628 backedges. 0 proven. 8326 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2024-11-28 03:29:39,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700302288] [2024-11-28 03:29:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700302288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838446741] [2024-11-28 03:29:39,642 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:29:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:39,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:39,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a89d56-b4d4-4ae5-a745-433d79e71927/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process