./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.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_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1 --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 02f4d89ad8ae68bf7980f37a0875d8dc9742c5b53631541ef266f31c83f1917f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:57:11,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:57:11,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:57:11,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:57:11,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:57:11,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:57:11,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:57:11,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:57:11,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:57:11,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:57:11,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:57:11,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:57:11,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:57:11,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:57:11,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:57:11,691 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:57:11,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:57:11,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:57:11,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:57:11,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:57:11,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:57:11,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:57:11,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:57:11,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:57:11,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:57:11,693 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_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1 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 -> 02f4d89ad8ae68bf7980f37a0875d8dc9742c5b53631541ef266f31c83f1917f [2024-12-02 08:57:11,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:57:11,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:57:11,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:57:11,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:57:11,917 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:57:11,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 08:57:14,595 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/37ce50014/9e6147bf93f64d49b0573a8691699d80/FLAG6542d081d [2024-12-02 08:57:14,806 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:57:14,807 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 08:57:14,815 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/37ce50014/9e6147bf93f64d49b0573a8691699d80/FLAG6542d081d [2024-12-02 08:57:15,173 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/37ce50014/9e6147bf93f64d49b0573a8691699d80 [2024-12-02 08:57:15,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:57:15,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:57:15,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:57:15,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:57:15,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:57:15,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c29f00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15, skipping insertion in model container [2024-12-02 08:57:15,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:57:15,332 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_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i[917,930] [2024-12-02 08:57:15,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:57:15,383 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:57:15,393 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_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i[917,930] [2024-12-02 08:57:15,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:57:15,433 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:57:15,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15 WrapperNode [2024-12-02 08:57:15,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:57:15,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:57:15,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:57:15,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:57:15,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,477 INFO L138 Inliner]: procedures = 27, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 332 [2024-12-02 08:57:15,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:57:15,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:57:15,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:57:15,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:57:15,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,507 INFO L175 MemorySlicer]: Split 88 memory accesses to 2 slices as follows [2, 86]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 25 writes are split as follows [0, 25]. [2024-12-02 08:57:15,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,514 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:57:15,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:57:15,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:57:15,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:57:15,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (1/1) ... [2024-12-02 08:57:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:57:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:15,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:57:15,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:57:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:57:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:57:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:57:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:57:15,669 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:57:15,670 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:57:15,971 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-12-02 08:57:15,971 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:57:15,982 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:57:15,982 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:57:15,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:57:15 BoogieIcfgContainer [2024-12-02 08:57:15,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:57:15,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:57:15,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:57:15,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:57:15,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:57:15" (1/3) ... [2024-12-02 08:57:15,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2615259d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:57:15, skipping insertion in model container [2024-12-02 08:57:15,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:15" (2/3) ... [2024-12-02 08:57:15,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2615259d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:57:15, skipping insertion in model container [2024-12-02 08:57:15,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:57:15" (3/3) ... [2024-12-02 08:57:15,992 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 08:57:16,005 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:57:16,006 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-62.i that has 2 procedures, 73 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:57:16,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:57:16,065 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;@7c4ad025, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:57:16,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:57:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:16,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:57:16,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:16,077 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:16,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:16,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash -256564704, now seen corresponding path program 1 times [2024-12-02 08:57:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539216794] [2024-12-02 08:57:16,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 08:57:16,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539216794] [2024-12-02 08:57:16,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539216794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:57:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070442558] [2024-12-02 08:57:16,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:16,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:16,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:16,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:57:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:16,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:57:16,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 08:57:16,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070442558] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:16,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:57:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:57:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242632418] [2024-12-02 08:57:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:16,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:57:16,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:16,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:57:16,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:57:16,519 INFO L87 Difference]: Start difference. First operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 08:57:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:16,538 INFO L93 Difference]: Finished difference Result 139 states and 210 transitions. [2024-12-02 08:57:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:57:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-12-02 08:57:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:16,544 INFO L225 Difference]: With dead ends: 139 [2024-12-02 08:57:16,544 INFO L226 Difference]: Without dead ends: 69 [2024-12-02 08:57:16,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:57:16,549 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:16,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:57:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-12-02 08:57:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-12-02 08:57:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-12-02 08:57:16,582 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 73 [2024-12-02 08:57:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:16,582 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-12-02 08:57:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 08:57:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-12-02 08:57:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:57:16,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:16,585 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:16,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:57:16,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:57:16,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:16,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1770871312, now seen corresponding path program 1 times [2024-12-02 08:57:16,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:16,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542229231] [2024-12-02 08:57:16,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:16,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542229231] [2024-12-02 08:57:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542229231] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:16,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:57:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32145372] [2024-12-02 08:57:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:16,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:57:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:16,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:57:16,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:57:16,997 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:17,039 INFO L93 Difference]: Finished difference Result 138 states and 195 transitions. [2024-12-02 08:57:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:57:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 08:57:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:17,040 INFO L225 Difference]: With dead ends: 138 [2024-12-02 08:57:17,041 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 08:57:17,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:57:17,042 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:17,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 271 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:57:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 08:57:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-12-02 08:57:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-12-02 08:57:17,050 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 73 [2024-12-02 08:57:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:17,051 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-12-02 08:57:17,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-12-02 08:57:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:57:17,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:17,052 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:17,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:57:17,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:17,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash -749088622, now seen corresponding path program 1 times [2024-12-02 08:57:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:17,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539407637] [2024-12-02 08:57:17,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:17,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539407637] [2024-12-02 08:57:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539407637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:57:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971739474] [2024-12-02 08:57:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:17,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:57:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:17,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:57:17,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:57:17,205 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:17,235 INFO L93 Difference]: Finished difference Result 142 states and 199 transitions. [2024-12-02 08:57:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:57:17,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 08:57:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:17,237 INFO L225 Difference]: With dead ends: 142 [2024-12-02 08:57:17,237 INFO L226 Difference]: Without dead ends: 74 [2024-12-02 08:57:17,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:57:17,238 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:17,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 274 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:57:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-12-02 08:57:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-12-02 08:57:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 63 states have internal predecessors, (85), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-12-02 08:57:17,245 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 73 [2024-12-02 08:57:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:17,246 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-12-02 08:57:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-12-02 08:57:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:57:17,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:17,248 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:17,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:57:17,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:17,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -747241580, now seen corresponding path program 1 times [2024-12-02 08:57:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:17,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510285465] [2024-12-02 08:57:17,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510285465] [2024-12-02 08:57:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510285465] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:57:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61246366] [2024-12-02 08:57:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:17,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:57:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:17,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:57:17,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:57:17,855 INFO L87 Difference]: Start difference. First operand 73 states and 101 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, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:18,107 INFO L93 Difference]: Finished difference Result 181 states and 250 transitions. [2024-12-02 08:57:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:57:18,107 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, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 08:57:18,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:18,109 INFO L225 Difference]: With dead ends: 181 [2024-12-02 08:57:18,109 INFO L226 Difference]: Without dead ends: 111 [2024-12-02 08:57:18,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:18,110 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 223 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:18,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 195 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:57:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-02 08:57:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2024-12-02 08:57:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-12-02 08:57:18,122 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 73 [2024-12-02 08:57:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:18,123 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-12-02 08:57:18,123 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, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-12-02 08:57:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 08:57:18,124 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:18,124 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:18,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:57:18,125 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:18,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash -991247921, now seen corresponding path program 1 times [2024-12-02 08:57:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982802289] [2024-12-02 08:57:18,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982802289] [2024-12-02 08:57:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982802289] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:57:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879427499] [2024-12-02 08:57:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:57:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:18,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:57:18,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:57:18,607 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:18,968 INFO L93 Difference]: Finished difference Result 192 states and 264 transitions. [2024-12-02 08:57:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:57:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2024-12-02 08:57:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:18,970 INFO L225 Difference]: With dead ends: 192 [2024-12-02 08:57:18,970 INFO L226 Difference]: Without dead ends: 120 [2024-12-02 08:57:18,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:57:18,971 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 202 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:18,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 653 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:57:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-12-02 08:57:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2024-12-02 08:57:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2024-12-02 08:57:18,984 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 75 [2024-12-02 08:57:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:18,984 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2024-12-02 08:57:18,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2024-12-02 08:57:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 08:57:18,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:18,986 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:18,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:57:18,986 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:18,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash -387496087, now seen corresponding path program 1 times [2024-12-02 08:57:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072145874] [2024-12-02 08:57:18,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:19,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:19,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072145874] [2024-12-02 08:57:19,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072145874] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:19,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:57:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653855343] [2024-12-02 08:57:19,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:19,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:57:19,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:19,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:57:19,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:57:19,786 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 08:57:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:20,083 INFO L93 Difference]: Finished difference Result 169 states and 233 transitions. [2024-12-02 08:57:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:57:20,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-12-02 08:57:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:20,085 INFO L225 Difference]: With dead ends: 169 [2024-12-02 08:57:20,085 INFO L226 Difference]: Without dead ends: 87 [2024-12-02 08:57:20,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:57:20,086 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 182 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:20,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 288 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:57:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-02 08:57:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-12-02 08:57:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2024-12-02 08:57:20,097 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 75 [2024-12-02 08:57:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:20,098 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2024-12-02 08:57:20,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 08:57:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2024-12-02 08:57:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:57:20,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:20,099 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:20,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:57:20,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:20,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 184374234, now seen corresponding path program 1 times [2024-12-02 08:57:20,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005310087] [2024-12-02 08:57:20,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 08:57:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005310087] [2024-12-02 08:57:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005310087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:57:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885997881] [2024-12-02 08:57:20,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:20,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:20,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:20,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:57:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:20,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:57:20,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:20,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885997881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:57:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 08:57:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867429749] [2024-12-02 08:57:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:57:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:20,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:57:20,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:20,378 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:20,410 INFO L93 Difference]: Finished difference Result 166 states and 229 transitions. [2024-12-02 08:57:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:57:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 08:57:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:20,412 INFO L225 Difference]: With dead ends: 166 [2024-12-02 08:57:20,412 INFO L226 Difference]: Without dead ends: 86 [2024-12-02 08:57:20,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:20,413 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:20,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:57:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-12-02 08:57:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-12-02 08:57:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2024-12-02 08:57:20,424 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 77 [2024-12-02 08:57:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:20,424 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2024-12-02 08:57:20,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2024-12-02 08:57:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:57:20,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:20,425 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:20,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:57:20,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 08:57:20,626 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:20,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 376483499, now seen corresponding path program 1 times [2024-12-02 08:57:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699638976] [2024-12-02 08:57:20,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:22,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:22,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699638976] [2024-12-02 08:57:22,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699638976] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:22,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:22,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:57:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203193497] [2024-12-02 08:57:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:22,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:57:22,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:22,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:57:22,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:57:22,052 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 08:57:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:22,587 INFO L93 Difference]: Finished difference Result 202 states and 273 transitions. [2024-12-02 08:57:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:57:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 77 [2024-12-02 08:57:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:22,589 INFO L225 Difference]: With dead ends: 202 [2024-12-02 08:57:22,589 INFO L226 Difference]: Without dead ends: 119 [2024-12-02 08:57:22,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:57:22,590 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 261 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:22,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 284 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:57:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-12-02 08:57:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2024-12-02 08:57:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2024-12-02 08:57:22,602 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 77 [2024-12-02 08:57:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:22,602 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2024-12-02 08:57:22,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 08:57:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2024-12-02 08:57:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:57:22,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:22,604 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:22,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:57:22,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:22,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1126787172, now seen corresponding path program 1 times [2024-12-02 08:57:22,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191212556] [2024-12-02 08:57:22,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191212556] [2024-12-02 08:57:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191212556] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:57:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285167454] [2024-12-02 08:57:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:22,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:57:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:22,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:57:22,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:57:22,987 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:23,317 INFO L93 Difference]: Finished difference Result 213 states and 286 transitions. [2024-12-02 08:57:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:57:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 08:57:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:23,319 INFO L225 Difference]: With dead ends: 213 [2024-12-02 08:57:23,319 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 08:57:23,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:57:23,320 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 124 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:23,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 448 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:57:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 08:57:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 89. [2024-12-02 08:57:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-12-02 08:57:23,338 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 77 [2024-12-02 08:57:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:23,338 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-12-02 08:57:23,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-12-02 08:57:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:57:23,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:23,339 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:23,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:57:23,340 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:23,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -736098379, now seen corresponding path program 1 times [2024-12-02 08:57:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209156760] [2024-12-02 08:57:23,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209156760] [2024-12-02 08:57:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209156760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:57:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72470850] [2024-12-02 08:57:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:23,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:57:23,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:23,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:57:23,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:57:23,700 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:23,998 INFO L93 Difference]: Finished difference Result 216 states and 290 transitions. [2024-12-02 08:57:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:57:23,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 08:57:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:24,000 INFO L225 Difference]: With dead ends: 216 [2024-12-02 08:57:24,000 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 08:57:24,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:24,001 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 118 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:24,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 341 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:57:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 08:57:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 92. [2024-12-02 08:57:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 82 states have internal predecessors, (107), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions. [2024-12-02 08:57:24,011 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 77 [2024-12-02 08:57:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:24,012 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 123 transitions. [2024-12-02 08:57:24,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions. [2024-12-02 08:57:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 08:57:24,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:24,013 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:57:24,013 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:24,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1071179512, now seen corresponding path program 1 times [2024-12-02 08:57:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347670082] [2024-12-02 08:57:24,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 08:57:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347670082] [2024-12-02 08:57:24,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347670082] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:57:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202844924] [2024-12-02 08:57:24,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:24,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:24,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:57:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:24,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:57:24,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:24,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:57:24,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 08:57:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 08:57:24,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202844924] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:24,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:57:24,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 08:57:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127609995] [2024-12-02 08:57:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:24,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:57:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:24,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:57:24,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:57:24,375 INFO L87 Difference]: Start difference. First operand 92 states and 123 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:24,513 INFO L93 Difference]: Finished difference Result 223 states and 294 transitions. [2024-12-02 08:57:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:57:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2024-12-02 08:57:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:24,515 INFO L225 Difference]: With dead ends: 223 [2024-12-02 08:57:24,515 INFO L226 Difference]: Without dead ends: 134 [2024-12-02 08:57:24,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:57:24,516 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 33 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:24,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 263 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:57:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-12-02 08:57:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 107. [2024-12-02 08:57:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 97 states have internal predecessors, (124), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:57:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2024-12-02 08:57:24,528 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 79 [2024-12-02 08:57:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:24,528 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2024-12-02 08:57:24,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 08:57:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2024-12-02 08:57:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 08:57:24,529 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:24,529 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:24,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:57:24,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:24,730 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:24,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 818027873, now seen corresponding path program 1 times [2024-12-02 08:57:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:24,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379847430] [2024-12-02 08:57:24,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 08:57:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379847430] [2024-12-02 08:57:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379847430] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:57:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453279417] [2024-12-02 08:57:25,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:25,893 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:25,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:57:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:26,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 08:57:26,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:26,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:57:27,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:57:28,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:57:28,964 INFO L349 Elim1Store]: treesize reduction 46, result has 24.6 percent of original size [2024-12-02 08:57:28,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 48 [2024-12-02 08:57:29,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 79 [2024-12-02 08:57:29,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 110 [2024-12-02 08:57:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 55 [2024-12-02 08:57:29,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 162 [2024-12-02 08:57:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:29,760 INFO L349 Elim1Store]: treesize reduction 116, result has 30.1 percent of original size [2024-12-02 08:57:29,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 338 treesize of output 337 [2024-12-02 08:57:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:31,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:31,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:57:54,672 WARN L286 SmtUtils]: Spent 23.27s on a formula simplification. DAG size of input: 1619 DAG size of output: 1253 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 08:57:54,672 INFO L349 Elim1Store]: treesize reduction 864, result has 74.1 percent of original size [2024-12-02 08:57:54,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 6 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 372 case distinctions, treesize of input 649 treesize of output 2810 [2024-12-02 09:09:35,295 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 09:09:35,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 09:09:35,296 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-02 09:09:35,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 09:09:35,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 09:09:35,497 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 75 more [2024-12-02 09:09:35,500 INFO L158 Benchmark]: Toolchain (without parser) took 740323.84ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 117.7MB in the beginning and 217.8MB in the end (delta: -100.2MB). Peak memory consumption was 299.1MB. Max. memory is 16.1GB. [2024-12-02 09:09:35,500 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:09:35,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.62ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 103.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 09:09:35,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.36ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 100.9MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:09:35,501 INFO L158 Benchmark]: Boogie Preprocessor took 47.35ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 98.2MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 09:09:35,501 INFO L158 Benchmark]: RCFGBuilder took 456.44ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 73.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 09:09:35,501 INFO L158 Benchmark]: TraceAbstraction took 739515.20ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 73.3MB in the beginning and 217.8MB in the end (delta: -144.6MB). Peak memory consumption was 257.1MB. Max. memory is 16.1GB. [2024-12-02 09:09:35,502 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.62ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 103.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.36ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 100.9MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.35ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 98.2MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 456.44ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 73.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 739515.20ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 73.3MB in the beginning and 217.8MB in the end (delta: -144.6MB). Peak memory consumption was 257.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1 --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 02f4d89ad8ae68bf7980f37a0875d8dc9742c5b53631541ef266f31c83f1917f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:09:37,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:09:37,262 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 09:09:37,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:09:37,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:09:37,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:09:37,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:09:37,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:09:37,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:09:37,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:09:37,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:09:37,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:09:37,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:09:37,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:09:37,291 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:09:37,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 09:09:37,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:09:37,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:09:37,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:09:37,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:09:37,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:09:37,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:09:37,295 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_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1 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 -> 02f4d89ad8ae68bf7980f37a0875d8dc9742c5b53631541ef266f31c83f1917f [2024-12-02 09:09:37,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:09:37,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:09:37,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:09:37,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:09:37,546 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:09:37,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 09:09:40,160 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/34efd5876/4ed3a30151b442739f0678f6d21019d5/FLAG9b7ab7f05 [2024-12-02 09:09:40,416 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:09:40,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 09:09:40,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/34efd5876/4ed3a30151b442739f0678f6d21019d5/FLAG9b7ab7f05 [2024-12-02 09:09:40,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/data/34efd5876/4ed3a30151b442739f0678f6d21019d5 [2024-12-02 09:09:40,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:09:40,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:09:40,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:09:40,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:09:40,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:09:40,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3bc14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40, skipping insertion in model container [2024-12-02 09:09:40,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:09:40,594 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_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i[917,930] [2024-12-02 09:09:40,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:09:40,649 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:09:40,657 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_7cae06e5-bd2e-48c4-84ed-06246f880669/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i[917,930] [2024-12-02 09:09:40,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:09:40,699 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:09:40,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40 WrapperNode [2024-12-02 09:09:40,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:09:40,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:09:40,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:09:40,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:09:40,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,738 INFO L138 Inliner]: procedures = 34, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 330 [2024-12-02 09:09:40,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:09:40,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:09:40,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:09:40,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:09:40,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,767 INFO L175 MemorySlicer]: Split 88 memory accesses to 2 slices as follows [2, 86]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 25 writes are split as follows [0, 25]. [2024-12-02 09:09:40,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,781 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:09:40,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:09:40,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:09:40,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:09:40,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (1/1) ... [2024-12-02 09:09:40,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:09:40,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:40,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:09:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-12-02 09:09:40,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#0 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#1 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-12-02 09:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 09:09:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:09:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 09:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 09:09:40,969 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:09:40,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:09:41,385 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-12-02 09:09:41,385 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:09:41,396 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:09:41,396 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 09:09:41,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:09:41 BoogieIcfgContainer [2024-12-02 09:09:41,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:09:41,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:09:41,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:09:41,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:09:41,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:09:40" (1/3) ... [2024-12-02 09:09:41,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac27bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:09:41, skipping insertion in model container [2024-12-02 09:09:41,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:09:40" (2/3) ... [2024-12-02 09:09:41,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac27bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:09:41, skipping insertion in model container [2024-12-02 09:09:41,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:09:41" (3/3) ... [2024-12-02 09:09:41,405 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-62.i [2024-12-02 09:09:41,419 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:09:41,421 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-62.i that has 2 procedures, 73 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 09:09:41,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:09:41,482 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;@30fedc98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:09:41,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 09:09:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 09:09:41,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:41,493 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:41,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:41,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash 40765512, now seen corresponding path program 1 times [2024-12-02 09:09:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585657228] [2024-12-02 09:09:41,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:41,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:41,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:41,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:41,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 09:09:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:41,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 09:09:41,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 09:09:41,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:41,736 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:41,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585657228] [2024-12-02 09:09:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585657228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:41,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:41,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 09:09:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067507072] [2024-12-02 09:09:41,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:41,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 09:09:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:41,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 09:09:41,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 09:09:41,760 INFO L87 Difference]: Start difference. First operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 09:09:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:41,778 INFO L93 Difference]: Finished difference Result 139 states and 210 transitions. [2024-12-02 09:09:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 09:09:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-12-02 09:09:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:41,785 INFO L225 Difference]: With dead ends: 139 [2024-12-02 09:09:41,785 INFO L226 Difference]: Without dead ends: 69 [2024-12-02 09:09:41,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 09:09:41,790 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:41,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:09:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-12-02 09:09:41,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-12-02 09:09:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-12-02 09:09:41,825 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 73 [2024-12-02 09:09:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:41,825 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-12-02 09:09:41,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 09:09:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-12-02 09:09:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 09:09:41,828 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:41,828 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:41,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 09:09:42,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:42,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2068201528, now seen corresponding path program 1 times [2024-12-02 09:09:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127762062] [2024-12-02 09:09:42,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:42,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:42,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:42,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 09:09:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:42,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:09:42,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:42,222 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:42,222 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127762062] [2024-12-02 09:09:42,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127762062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:42,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:42,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 09:09:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582087941] [2024-12-02 09:09:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:42,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:09:42,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:42,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:09:42,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:09:42,225 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:42,272 INFO L93 Difference]: Finished difference Result 138 states and 195 transitions. [2024-12-02 09:09:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:09:42,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 09:09:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:42,274 INFO L225 Difference]: With dead ends: 138 [2024-12-02 09:09:42,274 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 09:09:42,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:09:42,275 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:42,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 271 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:09:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 09:09:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-12-02 09:09:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-12-02 09:09:42,284 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 73 [2024-12-02 09:09:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:42,286 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-12-02 09:09:42,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-12-02 09:09:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 09:09:42,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:42,288 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:42,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 09:09:42,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:42,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash -451758406, now seen corresponding path program 1 times [2024-12-02 09:09:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635436142] [2024-12-02 09:09:42,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:42,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:42,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:42,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 09:09:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:42,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:09:42,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:42,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:42,658 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:42,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635436142] [2024-12-02 09:09:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635436142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:42,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:42,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 09:09:42,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387052608] [2024-12-02 09:09:42,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:42,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:09:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:42,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:09:42,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:09:42,660 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:42,691 INFO L93 Difference]: Finished difference Result 142 states and 199 transitions. [2024-12-02 09:09:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:09:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 09:09:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:42,693 INFO L225 Difference]: With dead ends: 142 [2024-12-02 09:09:42,693 INFO L226 Difference]: Without dead ends: 74 [2024-12-02 09:09:42,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:09:42,694 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:42,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 274 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:09:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-12-02 09:09:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-12-02 09:09:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 63 states have internal predecessors, (85), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-12-02 09:09:42,702 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 73 [2024-12-02 09:09:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:42,702 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-12-02 09:09:42,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-12-02 09:09:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 09:09:42,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:42,704 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:42,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 09:09:42,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,904 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:42,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -449911364, now seen corresponding path program 1 times [2024-12-02 09:09:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66628089] [2024-12-02 09:09:42,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:42,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:42,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:42,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 09:09:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:43,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 09:09:43,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:44,191 INFO L349 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2024-12-02 09:09:44,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 66 [2024-12-02 09:09:44,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2024-12-02 09:09:44,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2024-12-02 09:09:44,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2024-12-02 09:09:44,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 09:09:44,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 09:09:44,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2024-12-02 09:09:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:44,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:44,428 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66628089] [2024-12-02 09:09:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66628089] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 09:09:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108957009] [2024-12-02 09:09:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:44,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 09:09:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:44,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 09:09:44,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 09:09:44,430 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:44,984 INFO L93 Difference]: Finished difference Result 181 states and 250 transitions. [2024-12-02 09:09:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:09:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-12-02 09:09:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:44,986 INFO L225 Difference]: With dead ends: 181 [2024-12-02 09:09:44,986 INFO L226 Difference]: Without dead ends: 111 [2024-12-02 09:09:44,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:09:44,987 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 159 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:44,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 227 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 09:09:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-02 09:09:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2024-12-02 09:09:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-12-02 09:09:44,999 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 73 [2024-12-02 09:09:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:44,999 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-12-02 09:09:45,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-12-02 09:09:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 09:09:45,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:45,001 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:45,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 09:09:45,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:45,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:45,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1275248375, now seen corresponding path program 1 times [2024-12-02 09:09:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:45,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198418650] [2024-12-02 09:09:45,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:45,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:45,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:45,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 09:09:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:45,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 09:09:45,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:45,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-12-02 09:09:45,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-12-02 09:09:45,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-12-02 09:09:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 09:09:45,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:09:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:46,174 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198418650] [2024-12-02 09:09:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198418650] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 09:09:46,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:09:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-12-02 09:09:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928827996] [2024-12-02 09:09:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:46,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:09:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:46,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:09:46,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-12-02 09:09:46,176 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:46,940 INFO L93 Difference]: Finished difference Result 192 states and 264 transitions. [2024-12-02 09:09:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 09:09:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2024-12-02 09:09:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:46,942 INFO L225 Difference]: With dead ends: 192 [2024-12-02 09:09:46,942 INFO L226 Difference]: Without dead ends: 120 [2024-12-02 09:09:46,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-12-02 09:09:46,944 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 201 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:46,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 392 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 09:09:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-12-02 09:09:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2024-12-02 09:09:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2024-12-02 09:09:46,954 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 75 [2024-12-02 09:09:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:46,954 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2024-12-02 09:09:46,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2024-12-02 09:09:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 09:09:46,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:46,955 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:46,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 09:09:47,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:47,156 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:47,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1879000209, now seen corresponding path program 1 times [2024-12-02 09:09:47,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:47,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003192169] [2024-12-02 09:09:47,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:47,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 09:09:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:47,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 09:09:47,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:48,530 INFO L349 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2024-12-02 09:09:48,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 66 [2024-12-02 09:09:48,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2024-12-02 09:09:48,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2024-12-02 09:09:48,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 6 [2024-12-02 09:09:48,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 09:09:48,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 09:09:48,779 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2024-12-02 09:09:48,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2024-12-02 09:09:48,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 09:09:48,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2024-12-02 09:09:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:48,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:48,820 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003192169] [2024-12-02 09:09:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003192169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:48,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:48,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 09:09:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767045794] [2024-12-02 09:09:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:48,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:09:48,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:48,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:09:48,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:09:48,821 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:49,422 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2024-12-02 09:09:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 09:09:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2024-12-02 09:09:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:49,423 INFO L225 Difference]: With dead ends: 205 [2024-12-02 09:09:49,423 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 09:09:49,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:09:49,424 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 212 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:49,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 222 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 09:09:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 09:09:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 83. [2024-12-02 09:09:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2024-12-02 09:09:49,434 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 75 [2024-12-02 09:09:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:49,434 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2024-12-02 09:09:49,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2024-12-02 09:09:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 09:09:49,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:49,436 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:49,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 09:09:49,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:49,636 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:49,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -181576739, now seen corresponding path program 1 times [2024-12-02 09:09:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46568260] [2024-12-02 09:09:49,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:49,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:49,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:49,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 09:09:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:49,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 09:09:49,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:50,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 09:09:50,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-12-02 09:09:50,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-12-02 09:09:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:50,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:50,657 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46568260] [2024-12-02 09:09:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46568260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 09:09:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649681176] [2024-12-02 09:09:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:50,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:09:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:50,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:09:50,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:09:50,659 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:51,617 INFO L93 Difference]: Finished difference Result 201 states and 275 transitions. [2024-12-02 09:09:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 09:09:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 09:09:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:51,619 INFO L225 Difference]: With dead ends: 201 [2024-12-02 09:09:51,619 INFO L226 Difference]: Without dead ends: 121 [2024-12-02 09:09:51,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:09:51,620 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 107 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:51,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 341 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 09:09:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-12-02 09:09:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 86. [2024-12-02 09:09:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2024-12-02 09:09:51,630 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 77 [2024-12-02 09:09:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:51,630 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2024-12-02 09:09:51,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2024-12-02 09:09:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 09:09:51,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:51,632 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:51,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 09:09:51,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:51,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:51,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash 738895874, now seen corresponding path program 1 times [2024-12-02 09:09:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599466043] [2024-12-02 09:09:51,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:51,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:51,834 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 09:09:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:51,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 09:09:51,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:51,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:51,951 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:51,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599466043] [2024-12-02 09:09:51,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599466043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:51,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:51,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:09:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554629665] [2024-12-02 09:09:51,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:51,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:09:51,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:51,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:09:51,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:09:51,952 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:51,982 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2024-12-02 09:09:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:09:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 09:09:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:51,983 INFO L225 Difference]: With dead ends: 172 [2024-12-02 09:09:51,983 INFO L226 Difference]: Without dead ends: 89 [2024-12-02 09:09:51,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:09:51,984 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:51,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:09:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-12-02 09:09:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-12-02 09:09:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-12-02 09:09:51,994 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 77 [2024-12-02 09:09:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:51,995 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-12-02 09:09:51,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-12-02 09:09:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 09:09:51,995 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:51,995 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:52,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 09:09:52,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:52,196 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:52,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2084098479, now seen corresponding path program 1 times [2024-12-02 09:09:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018264439] [2024-12-02 09:09:52,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:52,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:52,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:52,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:52,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 09:09:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:52,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 09:09:52,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 09:09:52,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-12-02 09:09:53,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-12-02 09:09:53,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-12-02 09:09:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:09:53,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:09:53,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:09:53,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018264439] [2024-12-02 09:09:53,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018264439] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:09:53,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:09:53,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 09:09:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641228734] [2024-12-02 09:09:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:09:53,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 09:09:53,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:09:53,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 09:09:53,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 09:09:53,171 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:09:55,571 INFO L93 Difference]: Finished difference Result 208 states and 279 transitions. [2024-12-02 09:09:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 09:09:55,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 09:09:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:09:55,572 INFO L225 Difference]: With dead ends: 208 [2024-12-02 09:09:55,573 INFO L226 Difference]: Without dead ends: 122 [2024-12-02 09:09:55,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:09:55,573 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 188 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:09:55,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 231 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 09:09:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-02 09:09:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2024-12-02 09:09:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:09:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2024-12-02 09:09:55,582 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 77 [2024-12-02 09:09:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:09:55,582 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2024-12-02 09:09:55,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:09:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2024-12-02 09:09:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 09:09:55,583 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:09:55,583 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:09:55,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 09:09:55,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:55,784 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:09:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:09:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1681308812, now seen corresponding path program 1 times [2024-12-02 09:09:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:09:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424336685] [2024-12-02 09:09:55,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:09:55,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:09:55,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:09:55,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:09:55,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 09:09:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:09:55,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 09:09:55,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:09:56,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-12-02 09:09:56,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 09:09:56,648 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2024-12-02 09:09:56,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2024-12-02 09:09:56,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 09:09:56,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2024-12-02 09:09:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 09:09:56,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:10:01,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 916 treesize of output 884 [2024-12-02 09:10:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 09:10:02,253 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:10:02,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424336685] [2024-12-02 09:10:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424336685] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 09:10:02,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:10:02,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 18 [2024-12-02 09:10:02,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692712368] [2024-12-02 09:10:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:10:02,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 09:10:02,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 09:10:02,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 09:10:02,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=253, Unknown=1, NotChecked=0, Total=306 [2024-12-02 09:10:02,255 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:10:17,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:10:18,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:10:23,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:10:27,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 09:10:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:10:27,145 INFO L93 Difference]: Finished difference Result 219 states and 292 transitions. [2024-12-02 09:10:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 09:10:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2024-12-02 09:10:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:10:27,172 INFO L225 Difference]: With dead ends: 219 [2024-12-02 09:10:27,172 INFO L226 Difference]: Without dead ends: 133 [2024-12-02 09:10:27,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=73, Invalid=345, Unknown=2, NotChecked=0, Total=420 [2024-12-02 09:10:27,173 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 175 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-12-02 09:10:27,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 542 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2024-12-02 09:10:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-12-02 09:10:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2024-12-02 09:10:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 82 states have internal predecessors, (107), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 09:10:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions. [2024-12-02 09:10:27,179 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 77 [2024-12-02 09:10:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:10:27,179 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 123 transitions. [2024-12-02 09:10:27,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 09:10:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions. [2024-12-02 09:10:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 09:10:27,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:10:27,180 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:10:27,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 09:10:27,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:10:27,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:10:27,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:10:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1933694537, now seen corresponding path program 1 times [2024-12-02 09:10:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 09:10:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153294129] [2024-12-02 09:10:27,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:10:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:10:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:10:27,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:10:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 09:10:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:10:27,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 09:10:27,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:10:34,510 INFO L349 Elim1Store]: treesize reduction 37, result has 28.8 percent of original size [2024-12-02 09:10:34,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 41 [2024-12-02 09:10:34,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2024-12-02 09:10:35,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2024-12-02 09:10:35,840 INFO L349 Elim1Store]: treesize reduction 52, result has 44.1 percent of original size [2024-12-02 09:10:35,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 79 [2024-12-02 09:10:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 09:10:36,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:11:27,055 WARN L851 $PredicateComparison]: unable to prove that (forall ((~last_1_WrapperStruct00_var_1_1~0 (_ BitVec 8)) (~WrapperStruct00_var_1_6_Pointer~0.base (_ BitVec 32)) (v_ArrVal_358 (_ BitVec 32)) (~WrapperStruct00_var_1_6_Pointer~0.offset (_ BitVec 32)) (~WrapperStruct00_var_1_4_Pointer~0.offset (_ BitVec 32)) (~WrapperStruct00_var_1_9_Pointer~0.offset (_ BitVec 32)) (~WrapperStruct00_var_1_4_Pointer~0.base (_ BitVec 32))) (let ((.cse2 (let ((.cse3 (let ((.cse4 (let ((.cse6 (bvadd (select (select |c_#memory_int#1| c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset) (bvneg ((_ sign_extend 24) ~last_1_WrapperStruct00_var_1_1~0)) (bvneg ((_ zero_extend 24) ((_ extract 7 0) (select (select |c_#memory_int#1| ~WrapperStruct00_var_1_6_Pointer~0.base) ~WrapperStruct00_var_1_6_Pointer~0.offset))))))) (let ((.cse5 (store |c_#memory_int#1| c_~WrapperStruct00_var_1_7_Pointer~0.base (store (select |c_#memory_int#1| c_~WrapperStruct00_var_1_7_Pointer~0.base) c_~WrapperStruct00_var_1_7_Pointer~0.offset .cse6)))) (store .cse5 c_~WrapperStruct00_var_1_10_Pointer~0.base (store (select .cse5 c_~WrapperStruct00_var_1_10_Pointer~0.base) c_~WrapperStruct00_var_1_10_Pointer~0.offset ((_ sign_extend 16) ((_ extract 15 0) .cse6)))))))) (store .cse4 c_~WrapperStruct00_var_1_1_Pointer~0.base (store (select .cse4 c_~WrapperStruct00_var_1_1_Pointer~0.base) c_~WrapperStruct00_var_1_1_Pointer~0.offset ((_ sign_extend 24) (_ bv14 8))))))) (store .cse3 c_~WrapperStruct00_var_1_2_Pointer~0.base (store (select .cse3 c_~WrapperStruct00_var_1_2_Pointer~0.base) c_~WrapperStruct00_var_1_2_Pointer~0.offset v_ArrVal_358))))) (let ((.cse1 (select (select .cse2 c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (select (select (store .cse2 c_~WrapperStruct00_var_1_9_Pointer~0.base (store (select .cse2 c_~WrapperStruct00_var_1_9_Pointer~0.base) ~WrapperStruct00_var_1_9_Pointer~0.offset .cse1)) ~WrapperStruct00_var_1_4_Pointer~0.base) ~WrapperStruct00_var_1_4_Pointer~0.offset))))) (or (bvslt .cse0 .cse1) (not (bvslt .cse0 (_ bv0 32)))))))) is different from false [2024-12-02 09:11:27,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 09:11:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153294129] [2024-12-02 09:11:27,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153294129] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:11:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716851026] [2024-12-02 09:11:27,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:11:27,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 09:11:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 09:11:27,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 09:11:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cae06e5-bd2e-48c4-84ed-06246f880669/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-12-02 09:11:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:11:27,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 09:11:27,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:11:33,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 09:11:37,048 INFO L349 Elim1Store]: treesize reduction 37, result has 28.8 percent of original size [2024-12-02 09:11:37,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 41 [2024-12-02 09:11:37,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2024-12-02 09:11:38,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 64 [2024-12-02 09:11:39,723 INFO L349 Elim1Store]: treesize reduction 52, result has 44.1 percent of original size [2024-12-02 09:11:39,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 79 [2024-12-02 09:11:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 09:11:40,698 INFO L312 TraceCheckSpWp]: Computing backward predicates...