./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.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_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:48:08,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:48:08,281 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:48:08,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:48:08,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:48:08,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:48:08,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:48:08,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:48:08,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:48:08,350 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:48:08,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:48:08,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:48:08,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:48:08,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:48:08,352 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:48:08,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:48:08,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:48:08,354 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:48:08,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:48:08,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:48:08,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:48:08,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:48:08,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:48:08,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:48:08,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:48:08,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:48:08,356 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:48:08,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:48:08,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:48:08,358 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 [2024-11-28 03:48:08,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:48:08,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:48:08,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:48:08,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:48:08,762 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:48:08,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-28 03:48:12,391 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/62a831074/e30b80f53c0943ff9f2dbfbf3cf421ba/FLAG9b034047d [2024-11-28 03:48:12,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:48:12,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-28 03:48:12,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/62a831074/e30b80f53c0943ff9f2dbfbf3cf421ba/FLAG9b034047d [2024-11-28 03:48:12,794 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/62a831074/e30b80f53c0943ff9f2dbfbf3cf421ba [2024-11-28 03:48:12,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:48:12,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:48:12,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:48:12,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:48:12,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:48:12,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:48:12" (1/1) ... [2024-11-28 03:48:12,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e459d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:12, skipping insertion in model container [2024-11-28 03:48:12,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:48:12" (1/1) ... [2024-11-28 03:48:12,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:48:13,083 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-28 03:48:13,133 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-28 03:48:13,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:48:13,158 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:48:13,179 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-28 03:48:13,205 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-28 03:48:13,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:48:13,232 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:48:13,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13 WrapperNode [2024-11-28 03:48:13,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:48:13,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:48:13,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:48:13,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:48:13,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,302 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-28 03:48:13,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:48:13,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:48:13,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:48:13,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:48:13,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,349 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 03:48:13,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,359 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:48:13,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:48:13,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:48:13,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:48:13,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (1/1) ... [2024-11-28 03:48:13,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:48:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:13,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:48:13,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:48:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:48:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 03:48:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 03:48:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 03:48:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 03:48:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:48:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:48:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:48:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:48:13,571 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:48:13,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:48:13,857 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-28 03:48:13,858 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:48:13,871 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:48:13,871 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:48:13,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:48:13 BoogieIcfgContainer [2024-11-28 03:48:13,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:48:13,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:48:13,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:48:13,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:48:13,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:48:12" (1/3) ... [2024-11-28 03:48:13,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a79e716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:48:13, skipping insertion in model container [2024-11-28 03:48:13,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:48:13" (2/3) ... [2024-11-28 03:48:13,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a79e716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:48:13, skipping insertion in model container [2024-11-28 03:48:13,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:48:13" (3/3) ... [2024-11-28 03:48:13,887 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_8.i [2024-11-28 03:48:13,908 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:48:13,910 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_3_8.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 03:48:13,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:48:14,000 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;@11c9da71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:48:14,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:48:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:48:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:48:14,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:14,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:14,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:14,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash -246796359, now seen corresponding path program 1 times [2024-11-28 03:48:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854835883] [2024-11-28 03:48:14,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854835883] [2024-11-28 03:48:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854835883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:48:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:48:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:48:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990564568] [2024-11-28 03:48:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:48:14,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:48:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:14,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:48:14,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:48:14,321 INFO L87 Difference]: Start difference. First operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:14,358 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2024-11-28 03:48:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:48:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:48:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:14,368 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:48:14,368 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:48:14,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:48:14,376 INFO L435 NwaCegarLoop]: 49 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, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:14,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:48:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:48:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-28 03:48:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:48:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-28 03:48:14,438 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2024-11-28 03:48:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:14,440 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-28 03:48:14,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-28 03:48:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:48:14,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:14,443 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:14,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:48:14,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:14,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -250490443, now seen corresponding path program 1 times [2024-11-28 03:48:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916709732] [2024-11-28 03:48:14,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:14,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916709732] [2024-11-28 03:48:14,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916709732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:48:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:48:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:48:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233712358] [2024-11-28 03:48:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:48:14,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:48:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:14,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:48:14,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:48:14,718 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:14,769 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-28 03:48:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:48:14,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:48:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:14,772 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:48:14,772 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:48:14,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:48:14,775 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:14,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:48:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:48:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 03:48:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:48:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 03:48:14,786 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 03:48:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:14,787 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 03:48:14,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 03:48:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:48:14,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:14,788 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:14,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:48:14,788 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:14,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1385408911, now seen corresponding path program 1 times [2024-11-28 03:48:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830957829] [2024-11-28 03:48:14,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830957829] [2024-11-28 03:48:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830957829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552999488] [2024-11-28 03:48:15,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:48:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:15,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:15,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:15,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:48:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:48:15,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:48:15,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:15,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552999488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:48:15,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:48:15,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-28 03:48:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007519610] [2024-11-28 03:48:15,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:15,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:48:15,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:15,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:48:15,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:48:15,541 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:15,665 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 03:48:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:48:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:48:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:15,667 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:48:15,667 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:48:15,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:48:15,668 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:15,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 189 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:48:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:48:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 03:48:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:48:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-28 03:48:15,676 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2024-11-28 03:48:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:15,676 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-28 03:48:15,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-28 03:48:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:48:15,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:15,678 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:15,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:48:15,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 03:48:15,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:15,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1958962901, now seen corresponding path program 2 times [2024-11-28 03:48:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:15,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20088367] [2024-11-28 03:48:15,880 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:48:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:15,984 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:48:15,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 03:48:15,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789680089] [2024-11-28 03:48:15,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:48:15,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:15,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:15,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:48:23,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:48:23,691 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:23,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:48:23,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:48:31,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:50:09,625 WARN L286 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 123 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:51:30,099 WARN L286 SmtUtils]: Spent 32.65s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:51:55,376 WARN L286 SmtUtils]: Spent 6.76s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:52:23,426 WARN L286 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:52:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:52:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:52:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20088367] [2024-11-28 03:52:23,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:52:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789680089] [2024-11-28 03:52:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789680089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:52:23,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:52:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2024-11-28 03:52:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581295993] [2024-11-28 03:52:23,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:52:23,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:52:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:52:23,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:52:23,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=214, Unknown=2, NotChecked=0, Total=272 [2024-11-28 03:52:23,614 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:52:43,097 WARN L286 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 50 DAG size of output: 16 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:52:46,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:52:47,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:52:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:52:48,341 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-28 03:52:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:52:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:52:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:52:48,345 INFO L225 Difference]: With dead ends: 39 [2024-11-28 03:52:48,345 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 03:52:48,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 149.7s TimeCoverageRelationStatistics Valid=70, Invalid=269, Unknown=3, NotChecked=0, Total=342 [2024-11-28 03:52:48,346 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:52:48,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 314 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 03:52:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 03:52:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 03:52:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:52:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-28 03:52:48,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2024-11-28 03:52:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:52:48,361 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-28 03:52:48,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:52:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-28 03:52:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:52:48,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:52:48,363 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:52:48,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:52:48,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:52:48,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:52:48,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:52:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2129894897, now seen corresponding path program 1 times [2024-11-28 03:52:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:52:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433935790] [2024-11-28 03:52:48,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:52:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:52:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:52:48,579 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:52:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:52:48,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:52:48,614 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:52:48,615 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 03:52:48,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 03:52:48,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:52:48,623 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-28 03:52:48,646 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:52:48,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:52:48 BoogieIcfgContainer [2024-11-28 03:52:48,650 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:52:48,651 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:52:48,651 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:52:48,652 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:52:48,652 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:48:13" (3/4) ... [2024-11-28 03:52:48,655 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:52:48,657 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:52:48,658 INFO L158 Benchmark]: Toolchain (without parser) took 275856.73ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 92.8MB in the beginning and 104.1MB in the end (delta: -11.3MB). Peak memory consumption was 148.8MB. Max. memory is 16.1GB. [2024-11-28 03:52:48,659 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:52:48,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.34ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.5MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:52:48,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.36ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:52:48,660 INFO L158 Benchmark]: Boogie Preprocessor took 72.65ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:52:48,661 INFO L158 Benchmark]: RCFGBuilder took 491.46ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 63.8MB in the end (delta: 13.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:52:48,661 INFO L158 Benchmark]: TraceAbstraction took 274774.33ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 63.1MB in the beginning and 107.2MB in the end (delta: -44.0MB). Peak memory consumption was 123.6MB. Max. memory is 16.1GB. [2024-11-28 03:52:48,662 INFO L158 Benchmark]: Witness Printer took 5.91ms. Allocated memory is still 276.8MB. Free memory was 107.2MB in the beginning and 104.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:52:48,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.34ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.5MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.36ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.65ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.46ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 63.8MB in the end (delta: 13.6MB). There was no memory consumed. Max. memory is 16.1GB. * TraceAbstraction took 274774.33ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 63.1MB in the beginning and 107.2MB in the end (delta: -44.0MB). Peak memory consumption was 123.6MB. Max. memory is 16.1GB. * Witness Printer took 5.91ms. Allocated memory is still 276.8MB. Free memory was 107.2MB in the beginning and 104.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 93, overapproximation of someBinaryArithmeticFLOAToperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 97, overapproximation of someBinaryArithmeticFLOAToperation at line 95. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=112] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=112] [L93] RET, EXPR f(IN) VAL [IN=112] [L93] CALL, EXPR fp(IN) VAL [\old(x)=112] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=112] [L93] RET, EXPR fp(IN) VAL [IN=112] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=110] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=110] [L95] RET, EXPR f(x) VAL [IN=112, x=110] [L95] CALL, EXPR fp(x) VAL [\old(x)=110] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=110] [L95] RET, EXPR fp(x) VAL [IN=112, x=110] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111] [L97] RET, EXPR f(x) VAL [IN=112, x=111] [L97] CALL, EXPR fp(x) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111] [L97] RET, EXPR fp(x) VAL [IN=112, x=111] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=112] [L102] reach_error() VAL [IN=112] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 274.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 617 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 145 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 149.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 240.8s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 84 ConstructedInterpolants, 4 QuantifiedInterpolants, 3795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 3/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 03:52:48,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:52:51,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:52:52,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 03:52:52,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:52:52,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:52:52,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:52:52,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:52:52,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:52:52,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:52:52,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:52:52,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:52:52,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:52:52,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:52:52,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:52:52,117 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:52:52,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:52:52,119 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:52:52,120 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:52:52,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:52:52,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:52:52,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:52:52,121 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:52:52,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:52:52,123 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:52:52,123 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:52:52,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:52:52,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:52:52,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:52:52,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:52:52,125 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 [2024-11-28 03:52:52,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:52:52,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:52:52,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:52:52,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:52:52,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:52:52,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-28 03:52:56,822 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/e776d9892/f38ad7dde666460ba6ec37b12d9ad9c9/FLAGa078179ca [2024-11-28 03:52:57,222 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:52:57,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-28 03:52:57,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/e776d9892/f38ad7dde666460ba6ec37b12d9ad9c9/FLAGa078179ca [2024-11-28 03:52:57,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/data/e776d9892/f38ad7dde666460ba6ec37b12d9ad9c9 [2024-11-28 03:52:57,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:52:57,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:52:57,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:52:57,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:52:57,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:52:57,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:57,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e11a6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57, skipping insertion in model container [2024-11-28 03:52:57,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:57,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:52:57,732 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-28 03:52:57,780 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-28 03:52:57,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:52:57,802 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:52:57,839 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-28 03:52:57,868 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_00e46829-041e-4d8c-9a94-d33c00a3cc03/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-28 03:52:57,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:52:57,908 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:52:57,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57 WrapperNode [2024-11-28 03:52:57,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:52:57,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:52:57,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:52:57,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:52:57,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:57,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,014 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-28 03:52:58,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:52:58,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:52:58,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:52:58,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:52:58,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,077 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 03:52:58,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:52:58,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:52:58,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:52:58,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:52:58,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (1/1) ... [2024-11-28 03:52:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:52:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:52:58,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:52:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:52:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:52:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:52:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:52:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 03:52:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 03:52:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 03:52:58,271 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 03:52:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:52:58,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:52:58,399 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:52:58,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:53:13,478 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-28 03:53:13,478 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:53:13,493 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:53:13,495 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:53:13,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:13 BoogieIcfgContainer [2024-11-28 03:53:13,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:53:13,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:53:13,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:53:13,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:53:13,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:52:57" (1/3) ... [2024-11-28 03:53:13,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac7b64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:13, skipping insertion in model container [2024-11-28 03:53:13,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:52:57" (2/3) ... [2024-11-28 03:53:13,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac7b64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:13, skipping insertion in model container [2024-11-28 03:53:13,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:13" (3/3) ... [2024-11-28 03:53:13,510 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_8.i [2024-11-28 03:53:13,525 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:53:13,527 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_3_8.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 03:53:13,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:53:13,596 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;@5dcbad23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:53:13,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:53:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:53:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:53:13,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:13,610 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:13,611 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:13,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash -246796359, now seen corresponding path program 1 times [2024-11-28 03:53:13,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:53:13,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671999164] [2024-11-28 03:53:13,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:13,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:13,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:13,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:13,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:53:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:13,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:53:13,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:13,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:53:13,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:53:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671999164] [2024-11-28 03:53:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671999164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906822188] [2024-11-28 03:53:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:13,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:53:13,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:53:13,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:53:13,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:53:13,827 INFO L87 Difference]: Start difference. First operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:13,852 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2024-11-28 03:53:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:53:13,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:53:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:13,864 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:53:13,865 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:53:13,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:53:13,874 INFO L435 NwaCegarLoop]: 49 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, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:13,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:53:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:53:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-28 03:53:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:53:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-28 03:53:13,936 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2024-11-28 03:53:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:13,937 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-28 03:53:13,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-28 03:53:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:53:13,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:13,941 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:13,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:53:14,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:14,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:14,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -250490443, now seen corresponding path program 1 times [2024-11-28 03:53:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:53:14,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279788931] [2024-11-28 03:53:14,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:14,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:14,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:14,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:53:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:14,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:53:14,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:14,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:53:14,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:53:14,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279788931] [2024-11-28 03:53:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279788931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:14,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:14,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:53:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214231851] [2024-11-28 03:53:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:14,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:53:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:53:14,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:53:14,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:53:14,417 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:14,537 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-28 03:53:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:53:14,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:53:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:14,539 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:53:14,540 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:53:14,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:53:14,541 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:14,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:53:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:53:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 03:53:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:53:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 03:53:14,551 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 03:53:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:14,551 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 03:53:14,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 03:53:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:53:14,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:14,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:14,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:14,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:14,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:14,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1385408911, now seen corresponding path program 1 times [2024-11-28 03:53:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:53:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333585962] [2024-11-28 03:53:14,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:14,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:14,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:14,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:53:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:14,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:53:14,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:15,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:16,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:53:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333585962] [2024-11-28 03:53:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333585962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:16,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:53:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-28 03:53:16,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071037396] [2024-11-28 03:53:16,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:16,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:53:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:53:16,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:53:16,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:53:16,490 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:16,965 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 03:53:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:53:16,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:53:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:16,967 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:53:16,968 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:53:16,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:53:16,969 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:16,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 188 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:53:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:53:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 03:53:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:53:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-28 03:53:16,979 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2024-11-28 03:53:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:16,979 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-28 03:53:16,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-28 03:53:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:53:16,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:16,981 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:16,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:53:17,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:17,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:17,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1958962901, now seen corresponding path program 2 times [2024-11-28 03:53:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:53:17,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636222326] [2024-11-28 03:53:17,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:53:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:17,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:17,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:53:19,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:53:19,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:19,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:53:19,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:24,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:46,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:53:46,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636222326] [2024-11-28 03:53:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636222326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:46,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:53:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12] total 15 [2024-11-28 03:53:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145667759] [2024-11-28 03:53:46,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:46,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:53:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:53:46,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:53:46,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:53:46,416 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:51,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:55,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:59,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:01,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:04,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:22,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:26,788 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-28 03:54:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:54:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:54:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:26,790 INFO L225 Difference]: With dead ends: 54 [2024-11-28 03:54:26,790 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 03:54:26,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:54:26,792 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:26,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 255 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 3 Unknown, 0 Unchecked, 25.5s Time] [2024-11-28 03:54:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 03:54:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 03:54:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:54:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-28 03:54:26,810 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 15 [2024-11-28 03:54:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:26,810 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-28 03:54:26,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-28 03:54:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:54:26,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:26,814 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:26,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:54:27,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:27,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:27,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:27,016 INFO L85 PathProgramCache]: Analyzing trace with hash -967923739, now seen corresponding path program 1 times [2024-11-28 03:54:27,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:54:27,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355927867] [2024-11-28 03:54:27,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:27,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:27,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:27,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:27,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:54:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:29,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:54:29,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:54:31,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:54:56,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:54:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355927867] [2024-11-28 03:54:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355927867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:56,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:54:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2024-11-28 03:54:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201128789] [2024-11-28 03:54:56,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:56,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:54:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:54:56,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:54:56,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:54:56,704 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:56,924 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-28 03:54:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 03:54:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:56,931 INFO L225 Difference]: With dead ends: 40 [2024-11-28 03:54:56,931 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 03:54:56,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:54:56,932 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:56,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:54:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 03:54:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 03:54:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:54:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-28 03:54:56,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2024-11-28 03:54:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:56,939 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-28 03:54:56,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-28 03:54:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:54:56,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:56,941 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:56,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:54:57,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:57,142 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:57,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2129894897, now seen corresponding path program 1 times [2024-11-28 03:54:57,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:54:57,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137833733] [2024-11-28 03:54:57,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:57,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:54:57,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:54:57,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 03:54:57,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-28 03:55:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:55:17,427 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:55:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:55:30,505 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 03:55:30,505 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:55:30,506 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 03:55:30,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 03:55:30,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-28 03:55:30,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:55:30,714 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-28 03:55:30,772 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:55:30,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:55:30 BoogieIcfgContainer [2024-11-28 03:55:30,781 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:55:30,782 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:55:30,782 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:55:30,782 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:55:30,783 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:13" (3/4) ... [2024-11-28 03:55:30,784 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:55:30,844 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 19. [2024-11-28 03:55:30,917 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:55:30,918 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:55:30,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:55:30,919 INFO L158 Benchmark]: Toolchain (without parser) took 153493.86ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 45.8MB in the end (delta: 48.0MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,920 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 83.9MB. Free memory was 64.7MB in the beginning and 64.4MB in the end (delta: 335.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:30,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.60ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 81.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.31ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,921 INFO L158 Benchmark]: Boogie Preprocessor took 115.87ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:30,921 INFO L158 Benchmark]: RCFGBuilder took 15361.16ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 64.8MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,922 INFO L158 Benchmark]: TraceAbstraction took 137281.40ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 50.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,922 INFO L158 Benchmark]: Witness Printer took 136.18ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 45.8MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:30,924 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 83.9MB. Free memory was 64.7MB in the beginning and 64.4MB in the end (delta: 335.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.60ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 81.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.31ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.87ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 15361.16ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 64.8MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 137281.40ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 50.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Witness Printer took 136.18ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 45.8MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=-1.3888204097747803] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-1.3888204097747803, \result=-0.9873908162117004] [L93] RET, EXPR f(IN) VAL [IN=-1.3888204097747803] [L93] CALL, EXPR fp(IN) VAL [\old(x)=-1.3888204097747803] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3888204097747803, \result=0.2005702406167984] [L93] RET, EXPR fp(IN) VAL [IN=-1.3888204097747803] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=3.53409743309021] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=3.53409743309021, \result=2.1378064155578613] [L95] RET, EXPR f(x) VAL [x=3.53409743309021] [L95] CALL, EXPR fp(x) VAL [\old(x)=3.53409743309021] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=3.53409743309021, \result=3.9609873294830322] [L95] RET, EXPR fp(x) VAL [x=3.53409743309021] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=2.994381904602051] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=2.994381904602051, \result=0.9539979696273804] [L97] RET, EXPR f(x) VAL [x=2.994381904602051] [L97] CALL, EXPR fp(x) VAL [\old(x)=2.994381904602051] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=2.994381904602051, \result=0.8678044080734253] [L97] RET, EXPR fp(x) VAL [x=2.994381904602051] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) [L102] reach_error() - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 137.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 41.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 26.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 774 SdHoareTripleChecker+Invalid, 25.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 598 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 151 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 176 mSDtfsCounter, 151 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 55.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 25.6s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 108 ConstructedInterpolants, 5 QuantifiedInterpolants, 955 SizeOfPredicates, 6 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 18/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:55:31,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00e46829-041e-4d8c-9a94-d33c00a3cc03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE