./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum20.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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/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 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:31:56,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:31:56,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:31:56,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:31:56,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:31:56,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:31:56,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:31:56,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:31:56,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:31:56,746 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:31:56,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:31:56,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:31:56,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:31:56,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:31:56,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:31:56,748 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:31:56,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:31:56,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:31:56,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:31:56,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:31:56,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:31:56,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:31:56,751 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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/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 -> 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a [2024-11-28 03:31:57,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:31:57,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:31:57,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:31:57,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:31:57,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:31:57,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/reducercommutativity/rangesum20.i [2024-11-28 03:32:00,087 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/data/2b8f087eb/09f184466f1141a6bc60d02dbd23d6f9/FLAG2a0167af5 [2024-11-28 03:32:00,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:32:00,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/sv-benchmarks/c/reducercommutativity/rangesum20.i [2024-11-28 03:32:00,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/data/2b8f087eb/09f184466f1141a6bc60d02dbd23d6f9/FLAG2a0167af5 [2024-11-28 03:32:00,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/data/2b8f087eb/09f184466f1141a6bc60d02dbd23d6f9 [2024-11-28 03:32:00,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:32:00,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:32:00,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:00,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:32:00,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:32:00,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee7797b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00, skipping insertion in model container [2024-11-28 03:32:00,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:32:00,688 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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2024-11-28 03:32:00,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:00,715 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:32:00,740 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_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2024-11-28 03:32:00,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:00,762 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:32:00,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00 WrapperNode [2024-11-28 03:32:00,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:00,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:00,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:32:00,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:32:00,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,807 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-28 03:32:00,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:00,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:32:00,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:32:00,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:32:00,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,850 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-28 03:32:00,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,864 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:32:00,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:32:00,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:32:00,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:32:00,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (1/1) ... [2024-11-28 03:32:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:00,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:32:00,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:32:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:32:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:32:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:32:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-28 03:32:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-28 03:32:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:32:01,059 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:32:01,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:32:01,294 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-28 03:32:01,294 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:32:01,314 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:32:01,315 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:32:01,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:01 BoogieIcfgContainer [2024-11-28 03:32:01,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:32:01,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:32:01,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:32:01,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:32:01,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:32:00" (1/3) ... [2024-11-28 03:32:01,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c996e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:01, skipping insertion in model container [2024-11-28 03:32:01,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:00" (2/3) ... [2024-11-28 03:32:01,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c996e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:01, skipping insertion in model container [2024-11-28 03:32:01,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:01" (3/3) ... [2024-11-28 03:32:01,332 INFO L128 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2024-11-28 03:32:01,349 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:32:01,351 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum20.i that has 2 procedures, 28 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 03:32:01,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:32:01,426 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;@21350709, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:32:01,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:32:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:32:01,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:01,438 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:01,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:01,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1185270251, now seen corresponding path program 1 times [2024-11-28 03:32:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140220802] [2024-11-28 03:32:01,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 03:32:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:01,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140220802] [2024-11-28 03:32:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140220802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149215127] [2024-11-28 03:32:01,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:01,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:01,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:01,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:01,884 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:01,934 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-28 03:32:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:01,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-28 03:32:01,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:01,942 INFO L225 Difference]: With dead ends: 54 [2024-11-28 03:32:01,943 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 03:32:01,947 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 03:32:01,951 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 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 03:32:01,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 03:32:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-28 03:32:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-28 03:32:01,994 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-28 03:32:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:01,995 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-28 03:32:01,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-28 03:32:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:32:01,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:01,999 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:01,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:32:02,000 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:02,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1744330841, now seen corresponding path program 1 times [2024-11-28 03:32:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:02,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662495348] [2024-11-28 03:32:02,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 03:32:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662495348] [2024-11-28 03:32:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662495348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661221966] [2024-11-28 03:32:02,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:02,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:02,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:02,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:02,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:32:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:02,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:32:02,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:32:02,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661221966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:02,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:02,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 03:32:02,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159862517] [2024-11-28 03:32:02,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:02,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:02,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:02,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:02,527 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:02,551 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-28 03:32:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-28 03:32:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:02,552 INFO L225 Difference]: With dead ends: 46 [2024-11-28 03:32:02,552 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 03:32:02,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 03:32:02,554 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:02,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 03:32:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-28 03:32:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-28 03:32:02,560 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2024-11-28 03:32:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:02,560 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-28 03:32:02,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-28 03:32:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:32:02,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:02,562 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:02,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:02,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:02,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:02,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1714899532, now seen corresponding path program 1 times [2024-11-28 03:32:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:02,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411910868] [2024-11-28 03:32:02,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:32:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411910868] [2024-11-28 03:32:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411910868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434914600] [2024-11-28 03:32:02,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:02,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:02,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:02,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:02,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:32:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:03,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:32:03,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:32:03,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434914600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 03:32:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195022623] [2024-11-28 03:32:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:03,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:03,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:03,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:03,118 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:03,145 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-28 03:32:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-28 03:32:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:03,150 INFO L225 Difference]: With dead ends: 44 [2024-11-28 03:32:03,150 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 03:32:03,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 03:32:03,151 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:03,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 03:32:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-28 03:32:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-28 03:32:03,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2024-11-28 03:32:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:03,163 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 03:32:03,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-28 03:32:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:32:03,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:03,166 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:03,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:03,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:03,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:03,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 637011920, now seen corresponding path program 1 times [2024-11-28 03:32:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645242981] [2024-11-28 03:32:03,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645242981] [2024-11-28 03:32:03,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645242981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:03,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591031362] [2024-11-28 03:32:03,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:03,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:03,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:03,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:32:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:03,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:32:03,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 03:32:03,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591031362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 03:32:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918724590] [2024-11-28 03:32:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:03,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:03,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:03,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:03,696 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:03,720 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-28 03:32:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-28 03:32:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:03,724 INFO L225 Difference]: With dead ends: 53 [2024-11-28 03:32:03,724 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:32:03,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 03:32:03,725 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:03,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:32:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 03:32:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-28 03:32:03,736 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2024-11-28 03:32:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:03,736 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-28 03:32:03,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:32:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-28 03:32:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:32:03,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:03,739 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:03,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:03,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:03,944 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:03,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 268132973, now seen corresponding path program 1 times [2024-11-28 03:32:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934102750] [2024-11-28 03:32:03,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934102750] [2024-11-28 03:32:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934102750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686870814] [2024-11-28 03:32:04,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:04,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:04,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:32:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:04,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:32:04,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:04,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686870814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:04,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:32:04,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803893747] [2024-11-28 03:32:04,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:04,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:32:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:04,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:32:04,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:04,277 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 03:32:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:04,335 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-28 03:32:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:32:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-28 03:32:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:04,340 INFO L225 Difference]: With dead ends: 65 [2024-11-28 03:32:04,340 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 03:32:04,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:04,341 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:04,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 03:32:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-28 03:32:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-28 03:32:04,351 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 42 [2024-11-28 03:32:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:04,351 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-28 03:32:04,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 03:32:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-28 03:32:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:32:04,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:04,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:04,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:04,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:04,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:04,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1336068039, now seen corresponding path program 2 times [2024-11-28 03:32:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854158103] [2024-11-28 03:32:04,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:04,601 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:04,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:32:04,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854158103] [2024-11-28 03:32:04,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854158103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011819400] [2024-11-28 03:32:04,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:04,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:04,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:04,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:32:04,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:04,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:04,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:32:04,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:04,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:32:04,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011819400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:04,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:04,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-28 03:32:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195792861] [2024-11-28 03:32:04,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:04,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:32:04,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:04,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:32:04,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:32:04,997 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:32:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:05,098 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2024-11-28 03:32:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:32:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-28 03:32:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:05,100 INFO L225 Difference]: With dead ends: 81 [2024-11-28 03:32:05,100 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 03:32:05,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:32:05,101 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:05,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 157 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 03:32:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-28 03:32:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-28 03:32:05,115 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 48 [2024-11-28 03:32:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:05,116 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-28 03:32:05,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:32:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-28 03:32:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 03:32:05,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:05,120 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:05,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:32:05,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:32:05,321 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:05,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash 940919568, now seen corresponding path program 3 times [2024-11-28 03:32:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:05,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759589224] [2024-11-28 03:32:05,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:05,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:32:05,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-28 03:32:05,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759589224] [2024-11-28 03:32:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759589224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:05,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:32:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258766241] [2024-11-28 03:32:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:05,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:32:05,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:05,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:32:05,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:05,384 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:05,414 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-11-28 03:32:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2024-11-28 03:32:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:05,416 INFO L225 Difference]: With dead ends: 84 [2024-11-28 03:32:05,416 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 03:32:05,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:05,417 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:05,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 03:32:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-28 03:32:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-28 03:32:05,426 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 69 [2024-11-28 03:32:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:05,426 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-28 03:32:05,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-28 03:32:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:32:05,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:05,428 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:32:05,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:05,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 17026766, now seen corresponding path program 1 times [2024-11-28 03:32:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474560763] [2024-11-28 03:32:05,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-28 03:32:05,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474560763] [2024-11-28 03:32:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474560763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618563542] [2024-11-28 03:32:05,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:05,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:05,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:05,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:32:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:05,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:32:05,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-28 03:32:05,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-28 03:32:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618563542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:06,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:06,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 24 [2024-11-28 03:32:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619365493] [2024-11-28 03:32:06,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:06,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:32:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:06,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:32:06,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:32:06,344 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:32:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:06,499 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2024-11-28 03:32:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:32:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-28 03:32:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:06,501 INFO L225 Difference]: With dead ends: 102 [2024-11-28 03:32:06,501 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 03:32:06,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:32:06,503 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:06,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 03:32:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-28 03:32:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2024-11-28 03:32:06,520 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 78 [2024-11-28 03:32:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:06,520 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2024-11-28 03:32:06,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:32:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2024-11-28 03:32:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 03:32:06,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:06,522 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:06,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:06,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:32:06,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:06,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 588220410, now seen corresponding path program 2 times [2024-11-28 03:32:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167549738] [2024-11-28 03:32:06,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:06,808 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:06,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-28 03:32:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167549738] [2024-11-28 03:32:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167549738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419160309] [2024-11-28 03:32:07,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:07,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:07,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:07,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:32:07,290 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:07,290 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:07,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:32:07,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-28 03:32:07,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-28 03:32:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419160309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:07,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 03:32:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382276924] [2024-11-28 03:32:07,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:07,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:32:07,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:07,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:32:07,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:32:07,457 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:32:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:07,526 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2024-11-28 03:32:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:32:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 03:32:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:07,530 INFO L225 Difference]: With dead ends: 113 [2024-11-28 03:32:07,530 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 03:32:07,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:32:07,532 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:07,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 03:32:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-28 03:32:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2024-11-28 03:32:07,566 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 100 [2024-11-28 03:32:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:07,566 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2024-11-28 03:32:07,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:32:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2024-11-28 03:32:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 03:32:07,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:07,569 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:07,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:07,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:07,770 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:07,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -795408326, now seen corresponding path program 3 times [2024-11-28 03:32:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209078544] [2024-11-28 03:32:07,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:07,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:32:07,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-11-28 03:32:08,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209078544] [2024-11-28 03:32:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209078544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061834826] [2024-11-28 03:32:08,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:08,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:08,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:08,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:08,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:32:08,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:32:08,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:08,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:32:08,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2024-11-28 03:32:08,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2024-11-28 03:32:08,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061834826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:08,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 03:32:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031980637] [2024-11-28 03:32:08,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:08,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:32:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:08,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:32:08,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:08,430 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:08,523 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2024-11-28 03:32:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:32:08,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 136 [2024-11-28 03:32:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:08,526 INFO L225 Difference]: With dead ends: 140 [2024-11-28 03:32:08,526 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 03:32:08,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:08,528 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:08,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 03:32:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2024-11-28 03:32:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 94 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-11-28 03:32:08,558 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 136 [2024-11-28 03:32:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:08,559 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-11-28 03:32:08,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-11-28 03:32:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 03:32:08,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:08,567 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 20, 20, 18, 15, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:08,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:08,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:32:08,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:08,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2081167490, now seen corresponding path program 4 times [2024-11-28 03:32:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081990413] [2024-11-28 03:32:08,769 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:08,841 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:08,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 871 proven. 57 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2024-11-28 03:32:09,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:09,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081990413] [2024-11-28 03:32:09,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081990413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:09,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829056059] [2024-11-28 03:32:09,117 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:09,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:09,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:09,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:32:09,329 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:09,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:09,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:32:09,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 871 proven. 57 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2024-11-28 03:32:09,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 871 proven. 57 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2024-11-28 03:32:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829056059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:09,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 03:32:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339682338] [2024-11-28 03:32:09,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:09,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:32:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:09,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:32:09,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:32:09,600 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:09,674 INFO L93 Difference]: Finished difference Result 168 states and 194 transitions. [2024-11-28 03:32:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:32:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 174 [2024-11-28 03:32:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:09,676 INFO L225 Difference]: With dead ends: 168 [2024-11-28 03:32:09,676 INFO L226 Difference]: Without dead ends: 114 [2024-11-28 03:32:09,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 341 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:32:09,677 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:09,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-28 03:32:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-28 03:32:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0825688073394495) internal successors, (118), 109 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2024-11-28 03:32:09,701 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 174 [2024-11-28 03:32:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:09,702 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2024-11-28 03:32:09,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:32:09,702 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2024-11-28 03:32:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-28 03:32:09,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:09,708 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 33, 20, 20, 15, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:09,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:09,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:09,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:09,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1518228481, now seen corresponding path program 5 times [2024-11-28 03:32:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437352298] [2024-11-28 03:32:09,912 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:09,971 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:32:09,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 181 proven. 602 refuted. 0 times theorem prover too weak. 3169 trivial. 0 not checked. [2024-11-28 03:32:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:10,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437352298] [2024-11-28 03:32:10,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437352298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:10,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867687707] [2024-11-28 03:32:10,107 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:10,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:10,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:32:10,260 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:32:10,261 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:10,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:32:10,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 1785 proven. 40 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-28 03:32:10,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 181 proven. 602 refuted. 0 times theorem prover too weak. 3169 trivial. 0 not checked. [2024-11-28 03:32:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867687707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:10,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:32:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189684704] [2024-11-28 03:32:10,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:10,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:32:10,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:10,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:32:10,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:32:10,472 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:32:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:10,548 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2024-11-28 03:32:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:32:10,549 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 219 [2024-11-28 03:32:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:10,550 INFO L225 Difference]: With dead ends: 195 [2024-11-28 03:32:10,550 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 03:32:10,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:32:10,552 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:10,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 03:32:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-28 03:32:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 121 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2024-11-28 03:32:10,576 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 219 [2024-11-28 03:32:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:10,579 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2024-11-28 03:32:10,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:32:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2024-11-28 03:32:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-28 03:32:10,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:10,583 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:10,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:10,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:10,784 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:10,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1631587521, now seen corresponding path program 6 times [2024-11-28 03:32:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082940896] [2024-11-28 03:32:10,784 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:10,984 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:32:10,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5914 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082940896] [2024-11-28 03:32:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082940896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312393462] [2024-11-28 03:32:11,114 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:11,117 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:11,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:32:11,348 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:32:11,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:11,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:32:11,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5914 backedges. 2490 proven. 9 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-11-28 03:32:11,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5914 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312393462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:11,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 03:32:11,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650504528] [2024-11-28 03:32:11,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:11,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:32:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:11,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:32:11,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:11,483 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:11,538 INFO L93 Difference]: Finished difference Result 207 states and 236 transitions. [2024-11-28 03:32:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:32:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 255 [2024-11-28 03:32:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:11,543 INFO L225 Difference]: With dead ends: 207 [2024-11-28 03:32:11,543 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 03:32:11,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:11,544 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:11,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 100 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 03:32:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-28 03:32:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.099236641221374) internal successors, (144), 131 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2024-11-28 03:32:11,559 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 255 [2024-11-28 03:32:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:11,559 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2024-11-28 03:32:11,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2024-11-28 03:32:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:32:11,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:11,563 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:11,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:32:11,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:32:11,765 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:11,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1038490411, now seen corresponding path program 7 times [2024-11-28 03:32:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733937860] [2024-11-28 03:32:11,766 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5969 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:12,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:12,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733937860] [2024-11-28 03:32:12,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733937860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:12,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167320193] [2024-11-28 03:32:12,546 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:12,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:12,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:12,549 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:12,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:32:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:12,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:32:12,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5969 backedges. 2490 proven. 64 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-11-28 03:32:12,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5969 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167320193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:13,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:13,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-28 03:32:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639546230] [2024-11-28 03:32:13,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:13,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:32:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:13,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:32:13,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:32:13,218 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:13,332 INFO L93 Difference]: Finished difference Result 227 states and 261 transitions. [2024-11-28 03:32:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:32:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 265 [2024-11-28 03:32:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:13,337 INFO L225 Difference]: With dead ends: 227 [2024-11-28 03:32:13,338 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 03:32:13,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:32:13,339 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:13,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 03:32:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-28 03:32:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.086092715231788) internal successors, (164), 151 states have internal predecessors, (164), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2024-11-28 03:32:13,356 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 265 [2024-11-28 03:32:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:13,359 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2024-11-28 03:32:13,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2024-11-28 03:32:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 03:32:13,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:13,364 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:13,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:13,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:32:13,565 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:13,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash 975914499, now seen corresponding path program 8 times [2024-11-28 03:32:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989424456] [2024-11-28 03:32:13,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:13,678 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:13,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:14,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989424456] [2024-11-28 03:32:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989424456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516404661] [2024-11-28 03:32:14,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:14,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:14,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:32:15,098 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:15,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:15,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:32:15,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 2490 proven. 324 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-11-28 03:32:15,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2024-11-28 03:32:15,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516404661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:15,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-11-28 03:32:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733324305] [2024-11-28 03:32:15,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:15,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:32:15,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:15,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:32:15,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:32:15,590 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:15,702 INFO L93 Difference]: Finished difference Result 229 states and 254 transitions. [2024-11-28 03:32:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:32:15,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 285 [2024-11-28 03:32:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:15,704 INFO L225 Difference]: With dead ends: 229 [2024-11-28 03:32:15,706 INFO L226 Difference]: Without dead ends: 158 [2024-11-28 03:32:15,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 550 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:32:15,710 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:15,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 100 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-28 03:32:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-28 03:32:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0849673202614378) internal successors, (166), 153 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:32:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 172 transitions. [2024-11-28 03:32:15,725 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 172 transitions. Word has length 285 [2024-11-28 03:32:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:15,726 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 172 transitions. [2024-11-28 03:32:15,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:32:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 172 transitions. [2024-11-28 03:32:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-28 03:32:15,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:15,732 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:15,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:15,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:32:15,937 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:15,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash -732738817, now seen corresponding path program 9 times [2024-11-28 03:32:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519052599] [2024-11-28 03:32:15,938 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:17,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 03:32:17,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 03:32:17,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542111968] [2024-11-28 03:32:17,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:17,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:17,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:32:53,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 03:32:53,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 03:32:53,489 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:33:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:33:01,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:33:01,840 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:33:01,841 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:33:01,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:33:02,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:33:02,050 INFO L422 BasicCegarLoop]: Path program histogram: [9, 3, 1, 1, 1, 1] [2024-11-28 03:33:02,253 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:33:02,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:33:02 BoogieIcfgContainer [2024-11-28 03:33:02,263 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:33:02,264 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:33:02,264 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:33:02,265 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:33:02,265 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:01" (3/4) ... [2024-11-28 03:33:02,266 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:33:02,442 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 177. [2024-11-28 03:33:02,633 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:33:02,634 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:33:02,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:33:02,635 INFO L158 Benchmark]: Toolchain (without parser) took 62169.82ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 106.3MB in the beginning and 370.0MB in the end (delta: -263.8MB). Peak memory consumption was 107.3MB. Max. memory is 16.1GB. [2024-11-28 03:33:02,635 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:33:02,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.51ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 94.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:33:02,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:33:02,637 INFO L158 Benchmark]: Boogie Preprocessor took 67.49ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 91.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:33:02,637 INFO L158 Benchmark]: RCFGBuilder took 439.82ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 79.1MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:33:02,637 INFO L158 Benchmark]: TraceAbstraction took 60943.84ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 78.4MB in the beginning and 395.2MB in the end (delta: -316.8MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2024-11-28 03:33:02,638 INFO L158 Benchmark]: Witness Printer took 369.69ms. Allocated memory is still 520.1MB. Free memory was 395.2MB in the beginning and 370.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:33:02,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.51ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 94.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.49ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 91.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.82ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 79.1MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 60943.84ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 78.4MB in the beginning and 395.2MB in the end (delta: -316.8MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 369.69ms. Allocated memory is still 520.1MB. Free memory was 395.2MB in the beginning and 370.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[20]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}] [L17] COND TRUE i < 20 VAL [i=0, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}] [L17] COND TRUE i < 20 VAL [i=1, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}] [L17] COND TRUE i < 20 VAL [i=2, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}] [L17] COND TRUE i < 20 VAL [i=3, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}] [L17] COND TRUE i < 20 VAL [i=4, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}] [L17] COND TRUE i < 20 VAL [i=5, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}] [L17] COND TRUE i < 20 VAL [i=6, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}] [L17] COND TRUE i < 20 VAL [i=7, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}] [L17] COND TRUE i < 20 VAL [i=8, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}] [L17] COND TRUE i < 20 VAL [i=9, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}] [L17] COND TRUE i < 20 VAL [i=10, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=11, x={3:0}] [L17] COND TRUE i < 20 VAL [i=11, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=12, x={3:0}] [L17] COND TRUE i < 20 VAL [i=12, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=13, x={3:0}] [L17] COND TRUE i < 20 VAL [i=13, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=14, x={3:0}] [L17] COND TRUE i < 20 VAL [i=14, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=15, x={3:0}] [L17] COND TRUE i < 20 VAL [i=15, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=16, x={3:0}] [L17] COND TRUE i < 20 VAL [i=16, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=17, x={3:0}] [L17] COND TRUE i < 20 VAL [i=17, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=18, x={3:0}] [L17] COND TRUE i < 20 VAL [i=18, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=19, x={3:0}] [L17] COND TRUE i < 20 VAL [i=19, x={3:0}] [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=20, x={3:0}] [L17] COND FALSE !(i < 20) VAL [x={3:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=11, ret=-2147483641, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483641, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483641, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=12, ret=-4294967281, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967281, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967281, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=3, i=13, ret=-6442450928, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450928, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450928, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=4, i=14, ret=-8589934572, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=4, i=15, ret=-8589934572, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=4, i=15, ret=-8589934572, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=5, i=15, ret=-8589934577, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934577, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934577, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=6, i=16, ret=-10737418223, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418223, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418223, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=7, i=17, ret=-12884901868, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=7, i=18, ret=-12884901868, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=7, i=18, ret=-12884901868, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=8, i=18, ret=-12884901872, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=8, i=19, ret=-12884901872, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=8, i=19, ret=-12884901872, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=9, i=19, ret=-12884901875, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=9, i=20, ret=-12884901875, x={3:0}] [L28] COND FALSE !(i < 20) VAL [\old(x)={3:0}, cnt=9, ret=-12884901875, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=-1431655763, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L52] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=11, ret=-2147483641, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483641, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483641, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=12, ret=-4294967281, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967281, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967281, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=3, i=13, ret=-6442450928, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450928, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450928, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=4, i=14, ret=-8589934572, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=4, i=15, ret=-8589934572, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=4, i=15, ret=-8589934572, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=5, i=15, ret=-8589934577, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934577, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934577, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=6, i=16, ret=-10737418223, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418223, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418223, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=7, i=17, ret=-12884901868, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=7, i=18, ret=-12884901868, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=7, i=18, ret=-12884901868, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=8, i=18, ret=-12884901872, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=8, i=19, ret=-12884901872, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=8, i=19, ret=-12884901872, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=9, i=19, ret=-12884901875, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=9, i=20, ret=-12884901875, x={3:0}] [L28] COND FALSE !(i < 20) VAL [\old(x)={3:0}, cnt=9, ret=-12884901875, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=-1431655763, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [ret=-1431655763, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=0, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=1, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=2, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=3, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=4, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=5, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=6, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=7, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=8, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=9, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=10, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=10, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=11, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=11, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=12, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=12, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=13, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=13, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=14, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=14, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=15, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=15, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=16, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=16, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=17, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=17, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=18, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND TRUE i<20 -1 VAL [i=18, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=19, ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L54] COND FALSE !(i<20 -1) VAL [ret2=-1431655763, ret=-1431655763, temp=-2147483643, x={3:0}] [L57] x[20 -1] = temp [L58] CALL, EXPR rangesum(x) VAL [\old(x)={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=0, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=1, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=2, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=3, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=4, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=5, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=6, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=7, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=8, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=9, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L29] COND FALSE !(i > 20/2) VAL [\old(x)={3:0}, cnt=0, i=10, ret=0, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=0, i=11, ret=0, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=1, i=11, ret=-2147483640, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483640, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=1, i=12, ret=-2147483640, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=2, i=12, ret=-4294967287, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967287, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=2, i=13, ret=-4294967287, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=3, i=13, ret=-6442450931, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450931, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=3, i=14, ret=-6442450931, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=4, i=14, ret=-6442450936, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=4, i=15, ret=-6442450936, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=4, i=15, ret=-6442450936, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=5, i=15, ret=-8589934582, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934582, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=5, i=16, ret=-8589934582, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=6, i=16, ret=-10737418227, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418227, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=6, i=17, ret=-10737418227, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=7, i=17, ret=-10737418231, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=7, i=18, ret=-10737418231, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=7, i=18, ret=-10737418231, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=8, i=18, ret=-10737418234, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=8, i=19, ret=-10737418234, x={3:0}] [L28] COND TRUE i < 20 VAL [\old(x)={3:0}, cnt=8, i=19, ret=-10737418234, x={3:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [\old(x)={3:0}, cnt=9, i=19, ret=-12884901877, x={3:0}] [L28] i++ VAL [\old(x)={3:0}, cnt=9, i=20, ret=-12884901877, x={3:0}] [L28] COND FALSE !(i < 20) VAL [\old(x)={3:0}, cnt=9, ret=-12884901877, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\old(x)={3:0}, \result=-1431655764, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [ret2=-1431655763, ret=-1431655763, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [x={3:0}] [L61] reach_error() VAL [x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.7s, OverallIterations: 16, TraceHistogramMax: 60, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 1369 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 961 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 455 IncrementalHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 408 mSDtfsCounter, 455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3391 GetRequests, 3227 SyntacticMatches, 28 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=15, InterpolantAutomatonStates: 155, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 11 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 38.8s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 4102 NumberOfCodeBlocks, 2954 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 5092 ConstructedInterpolants, 0 QuantifiedInterpolants, 5948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3787 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 38 InterpolantComputations, 5 PerfectInterpolantSequences, 75842/78883 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:33:02,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082ef651-6c6c-4b6f-bc09-da99d1b3f74d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE