./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.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_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/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_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/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_115e1b03-d2cf-4e2e-b573-76c53986dd62/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 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:04:14,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:04:14,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:04:14,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:04:14,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:04:14,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:04:14,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:04:14,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:04:14,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:04:14,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:04:14,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:04:14,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:04:14,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:04:14,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:04:14,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:04:14,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:04:14,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:04:14,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:04:14,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:04:14,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:04:14,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:04:14,499 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:04:14,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:04:14,499 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:04:14,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:14,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:14,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:14,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:14,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:04:14,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:14,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:04:14,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:04:14,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:04:14,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:04:14,502 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/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 -> 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f [2024-11-28 04:04:14,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:04:14,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:04:14,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:04:14,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:04:14,889 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:04:14,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2024-11-28 04:04:18,039 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/850d2440a/31d1559e50634f0ba5df25de54a48f0f/FLAGd391dc195 [2024-11-28 04:04:18,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:04:18,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2024-11-28 04:04:18,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/850d2440a/31d1559e50634f0ba5df25de54a48f0f/FLAGd391dc195 [2024-11-28 04:04:18,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/850d2440a/31d1559e50634f0ba5df25de54a48f0f [2024-11-28 04:04:18,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:04:18,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:04:18,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:18,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:04:18,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:04:18,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104209c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18, skipping insertion in model container [2024-11-28 04:04:18,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:04:18,543 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2024-11-28 04:04:18,574 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2024-11-28 04:04:18,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:18,586 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:04:18,597 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2024-11-28 04:04:18,611 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2024-11-28 04:04:18,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:18,626 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:04:18,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18 WrapperNode [2024-11-28 04:04:18,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:18,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:18,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:04:18,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:04:18,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,660 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-28 04:04:18,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:18,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:04:18,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:04:18,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:04:18,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,685 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 04:04:18,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:04:18,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:04:18,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:04:18,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:04:18,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (1/1) ... [2024-11-28 04:04:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:18,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:04:18,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 04:04:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 04:04:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 04:04:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 04:04:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:04:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:04:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:04:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:04:18,853 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:04:18,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:04:19,044 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-28 04:04:19,044 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:04:19,055 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:04:19,055 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:04:19,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:19 BoogieIcfgContainer [2024-11-28 04:04:19,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:04:19,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:04:19,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:04:19,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:04:19,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:04:18" (1/3) ... [2024-11-28 04:04:19,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf203e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:19, skipping insertion in model container [2024-11-28 04:04:19,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:18" (2/3) ... [2024-11-28 04:04:19,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf203e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:19, skipping insertion in model container [2024-11-28 04:04:19,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:19" (3/3) ... [2024-11-28 04:04:19,067 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_2.i [2024-11-28 04:04:19,078 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:04:19,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_3+newton_3_2.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:04:19,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:04:19,158 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;@43377b29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:04:19,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:04:19,164 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 04:04:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:04:19,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:19,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:19,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:19,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1679801867, now seen corresponding path program 1 times [2024-11-28 04:04:19,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408191016] [2024-11-28 04:04:19,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:19,520 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 04:04:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:19,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408191016] [2024-11-28 04:04:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408191016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:04:19,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259822402] [2024-11-28 04:04:19,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:19,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:19,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:19,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:19,559 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:04:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:19,652 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-28 04:04:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:04:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:19,662 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:04:19,663 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 04:04:19,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:19,671 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:19,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:04:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 04:04:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-28 04:04:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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 04:04:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 04:04:19,722 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2024-11-28 04:04:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:19,722 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 04:04:19,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:04:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 04:04:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:04:19,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:19,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:19,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:04:19,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:19,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1805818803, now seen corresponding path program 1 times [2024-11-28 04:04:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844033241] [2024-11-28 04:04:19,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:19,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:20,071 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 04:04:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844033241] [2024-11-28 04:04:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844033241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:04:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649176266] [2024-11-28 04:04:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:20,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:04:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:20,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:04:20,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:20,075 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 04:04:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:20,131 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 04:04:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:04:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 04:04:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:20,132 INFO L225 Difference]: With dead ends: 41 [2024-11-28 04:04:20,132 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 04:04:20,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:20,133 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:20,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 04:04:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 04:04:20,143 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 04:04:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 04:04:20,147 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 04:04:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:20,147 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 04:04:20,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 04:04:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 04:04:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:04:20,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:20,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:20,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:04:20,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:20,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1545548215, now seen corresponding path program 1 times [2024-11-28 04:04:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:20,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411881371] [2024-11-28 04:04:20,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:04:20,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124015082] [2024-11-28 04:04:20,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:20,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:20,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:04:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:20,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:04:20,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:17,591 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 04:05:17,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:46,650 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 04:05:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411881371] [2024-11-28 04:05:46,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:05:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124015082] [2024-11-28 04:05:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124015082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:46,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:46,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-28 04:05:46,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578658855] [2024-11-28 04:05:46,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:46,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:05:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:46,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:05:46,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=224, Unknown=17, NotChecked=0, Total=306 [2024-11-28 04:05:46,655 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 04:05:51,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:05:55,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:14,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:16,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:06:20,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:24,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:28,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:33,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:38,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:43,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:06:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:44,189 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-11-28 04:06:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:06:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 04:06:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:44,191 INFO L225 Difference]: With dead ends: 51 [2024-11-28 04:06:44,193 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 04:06:44,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 97.0s TimeCoverageRelationStatistics Valid=87, Invalid=274, Unknown=19, NotChecked=0, Total=380 [2024-11-28 04:06:44,195 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:44,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 265 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 9 Unknown, 0 Unchecked, 42.2s Time] [2024-11-28 04:06:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 04:06:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-11-28 04:06:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 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 04:06:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 04:06:44,210 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2024-11-28 04:06:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:44,213 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 04:06:44,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 04:06:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 04:06:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:06:44,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:44,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:44,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:06:44,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:44,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:44,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1234680893, now seen corresponding path program 1 times [2024-11-28 04:06:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:44,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879227374] [2024-11-28 04:06:44,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:06:44,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857618887] [2024-11-28 04:06:44,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:44,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:44,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:06:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:44,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:06:44,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:45,596 WARN L286 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 533 DAG size of output: 533 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:11,889 WARN L286 SmtUtils]: Spent 47.89s on a formula simplification. DAG size of input: 430 DAG size of output: 429 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:12:21,557 WARN L286 SmtUtils]: Spent 22.21s on a formula simplification that was a NOOP. DAG size: 385 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:13:47,464 WARN L286 SmtUtils]: Spent 24.16s on a formula simplification that was a NOOP. DAG size: 385 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:14:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:14,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:20,069 WARN L286 SmtUtils]: Spent 20.57s on a formula simplification. DAG size of input: 96 DAG size of output: 100 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:15:48,634 WARN L286 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 101 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:16:19,865 WARN L286 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:16:45,329 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 04:16:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879227374] [2024-11-28 04:16:45,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:16:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857618887] [2024-11-28 04:16:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857618887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:45,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:16:45,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-28 04:16:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537592382] [2024-11-28 04:16:45,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:45,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:16:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:45,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:16:45,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=352, Unknown=29, NotChecked=0, Total=462 [2024-11-28 04:16:45,332 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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 04:16:50,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:54,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:16:58,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:04,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:17:07,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:17:19,960 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 04:17:19,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 04:17:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:17:19,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 371.3s TimeCoverageRelationStatistics Valid=90, Invalid=387, Unknown=29, NotChecked=0, Total=506 [2024-11-28 04:17:19,962 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:19,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 21.2s Time] [2024-11-28 04:17:19,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:17:20,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:20,167 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2024-11-28 04:17:20,172 INFO L158 Benchmark]: Toolchain (without parser) took 781810.50ms. Allocated memory was 142.6MB in the beginning and 687.9MB in the end (delta: 545.3MB). Free memory was 119.1MB in the beginning and 396.5MB in the end (delta: -277.4MB). Peak memory consumption was 266.6MB. Max. memory is 16.1GB. [2024-11-28 04:17:20,172 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:17:20,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.66ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 106.9MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:17:20,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.90ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:17:20,174 INFO L158 Benchmark]: Boogie Preprocessor took 36.92ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 103.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:17:20,174 INFO L158 Benchmark]: RCFGBuilder took 356.22ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 89.9MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:17:20,174 INFO L158 Benchmark]: TraceAbstraction took 781112.99ms. Allocated memory was 142.6MB in the beginning and 687.9MB in the end (delta: 545.3MB). Free memory was 89.4MB in the beginning and 396.5MB in the end (delta: -307.1MB). Peak memory consumption was 241.4MB. Max. memory is 16.1GB. [2024-11-28 04:17:20,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.66ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 106.9MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.90ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.92ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 103.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 356.22ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 89.9MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 781112.99ms. Allocated memory was 142.6MB in the beginning and 687.9MB in the end (delta: 545.3MB). Free memory was 89.4MB in the beginning and 396.5MB in the end (delta: -307.1MB). Peak memory consumption was 241.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/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_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/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_115e1b03-d2cf-4e2e-b573-76c53986dd62/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 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:17:22,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:17:22,889 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 04:17:22,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:17:22,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:17:22,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:17:22,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:17:22,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:17:22,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:17:22,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:17:22,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:17:22,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:17:22,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:17:22,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:17:22,946 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:17:22,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:17:22,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:17:22,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:17:22,948 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:17:22,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:17:22,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:17:22,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:17:22,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:17:22,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:17:22,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:17:22,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:17:22,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:17:22,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:17:22,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:17:22,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:17:22,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:17:22,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:17:22,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:17:22,953 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/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 -> 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f [2024-11-28 04:17:23,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:17:23,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:17:23,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:17:23,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:17:23,314 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:17:23,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2024-11-28 04:17:26,279 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/305818750/cc6175202c3645fb81f2e8e3a8e66dbb/FLAG18c487b9e [2024-11-28 04:17:26,298 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-28 04:17:26,505 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:17:26,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2024-11-28 04:17:26,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/305818750/cc6175202c3645fb81f2e8e3a8e66dbb/FLAG18c487b9e [2024-11-28 04:17:26,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/data/305818750/cc6175202c3645fb81f2e8e3a8e66dbb [2024-11-28 04:17:26,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:17:26,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:17:26,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:17:26,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:17:26,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:17:26,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984ad8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26, skipping insertion in model container [2024-11-28 04:17:26,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:17:26,774 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2024-11-28 04:17:26,828 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2024-11-28 04:17:26,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:17:26,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:17:26,878 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2024-11-28 04:17:26,892 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_115e1b03-d2cf-4e2e-b573-76c53986dd62/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2024-11-28 04:17:26,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:17:26,922 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:17:26,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26 WrapperNode [2024-11-28 04:17:26,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:17:26,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:17:26,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:17:26,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:17:26,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,977 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-28 04:17:26,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:17:26,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:17:26,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:17:26,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:17:26,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:26,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,023 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 04:17:27,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,035 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:17:27,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:17:27,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:17:27,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:17:27,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (1/1) ... [2024-11-28 04:17:27,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:17:27,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:27,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:17:27,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:17:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 04:17:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 04:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 04:17:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 04:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:17:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:17:27,199 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:17:27,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:17:41,815 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 04:17:41,816 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:17:41,829 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:17:41,829 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:17:41,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:17:41 BoogieIcfgContainer [2024-11-28 04:17:41,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:17:41,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:17:41,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:17:41,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:17:41,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:17:26" (1/3) ... [2024-11-28 04:17:41,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d68b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:17:41, skipping insertion in model container [2024-11-28 04:17:41,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:17:26" (2/3) ... [2024-11-28 04:17:41,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d68b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:17:41, skipping insertion in model container [2024-11-28 04:17:41,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:17:41" (3/3) ... [2024-11-28 04:17:41,848 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_2.i [2024-11-28 04:17:41,864 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:17:41,866 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_3+newton_3_2.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:17:41,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:17:41,935 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;@657ad569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:17:41,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:17:41,939 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 04:17:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:17:41,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:41,947 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:41,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:41,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1679801867, now seen corresponding path program 1 times [2024-11-28 04:17:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:17:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506193160] [2024-11-28 04:17:41,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:41,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:41,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:41,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:17:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:42,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:17:42,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:42,321 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 04:17:42,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:42,322 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:17:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506193160] [2024-11-28 04:17:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506193160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:17:42,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:17:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151947800] [2024-11-28 04:17:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:42,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:17:42,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:17:42,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:17:42,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:17:42,356 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:17:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:42,601 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-28 04:17:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:17:42,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:17:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:42,612 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:17:42,612 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 04:17:42,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:17:42,618 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:42,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:17:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 04:17:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-28 04:17:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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 04:17:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 04:17:42,665 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2024-11-28 04:17:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:42,667 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 04:17:42,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 04:17:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 04:17:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:17:42,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:42,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:42,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:17:42,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:42,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:42,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1805818803, now seen corresponding path program 1 times [2024-11-28 04:17:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:17:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97114885] [2024-11-28 04:17:42,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:42,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:42,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:42,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:17:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:42,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:17:42,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:43,051 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 04:17:43,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:43,052 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:17:43,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97114885] [2024-11-28 04:17:43,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97114885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:43,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:17:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:17:43,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253324179] [2024-11-28 04:17:43,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:43,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:17:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:17:43,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:17:43,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:17:43,055 INFO L87 Difference]: Start difference. First operand 33 states and 38 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 04:17:43,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:43,186 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 04:17:43,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:17:43,188 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 04:17:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:43,189 INFO L225 Difference]: With dead ends: 41 [2024-11-28 04:17:43,189 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 04:17:43,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:17:43,190 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:43,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:17:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 04:17:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 04:17:43,201 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 04:17:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 04:17:43,204 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 04:17:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:43,204 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 04:17:43,204 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 04:17:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 04:17:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:17:43,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:43,206 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:43,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:17:43,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:43,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:43,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash -714141131, now seen corresponding path program 1 times [2024-11-28 04:17:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:17:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611835075] [2024-11-28 04:17:43,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:43,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:43,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:43,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:17:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:43,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:17:43,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:44,112 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 04:17:44,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:44,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:17:44,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611835075] [2024-11-28 04:17:44,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611835075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:44,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:17:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:17:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400559970] [2024-11-28 04:17:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:44,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:17:44,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:17:44,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:17:44,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:17:44,116 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 04:17:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:44,382 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 04:17:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:17:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 04:17:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:44,384 INFO L225 Difference]: With dead ends: 42 [2024-11-28 04:17:44,384 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 04:17:44,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:17:44,385 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:44,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 159 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:17:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 04:17:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-28 04:17:44,392 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 04:17:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 04:17:44,393 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 04:17:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:44,393 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 04:17:44,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 04:17:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 04:17:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:17:44,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:44,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:44,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:17:44,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:44,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:44,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1545548215, now seen corresponding path program 1 times [2024-11-28 04:17:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:17:44,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975348244] [2024-11-28 04:17:44,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:44,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:44,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:44,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:17:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:44,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:44,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:47,686 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 04:17:47,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:52,801 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 04:17:52,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:17:52,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975348244] [2024-11-28 04:17:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975348244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:52,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:17:52,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-28 04:17:52,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123915067] [2024-11-28 04:17:52,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:17:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:17:52,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:17:52,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:17:52,804 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 04:17:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:55,585 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-11-28 04:17:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:17:55,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 04:17:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:55,587 INFO L225 Difference]: With dead ends: 48 [2024-11-28 04:17:55,588 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 04:17:55,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:17:55,589 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:55,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 253 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:17:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 04:17:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-28 04:17:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 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 04:17:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 04:17:55,598 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2024-11-28 04:17:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:55,598 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 04:17:55,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 04:17:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 04:17:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:17:55,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:55,600 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:55,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:17:55,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:55,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:55,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1270330689, now seen corresponding path program 2 times [2024-11-28 04:17:55,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:17:55,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303286290] [2024-11-28 04:17:55,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:55,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:55,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:55,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115e1b03-d2cf-4e2e-b573-76c53986dd62/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:17:56,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:56,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:56,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:17:56,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:33,368 INFO L312 TraceCheckSpWp]: Computing backward predicates...