./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/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 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:41:06,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:41:06,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:41:06,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:41:06,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:41:06,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:41:06,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:41:06,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:41:06,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:41:06,481 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:41:06,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:41:06,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:41:06,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:41:06,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:41:06,484 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:41:06,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:41:06,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:41:06,484 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:41:06,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:41:06,485 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:41:06,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:41:06,486 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:41:06,486 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:41:06,486 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:41:06,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:41:06,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:41:06,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:41:06,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:06,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:41:06,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:41:06,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:41:06,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:41:06,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:06,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:41:06,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:41:06,489 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:41:06,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:41:06,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:41:06,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:41:06,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:41:06,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:41:06,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:41:06,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:41:06,491 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_5301bf03-4b40-4abc-abb3-476c2e798f35/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 -> 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a [2024-11-28 03:41:06,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:41:06,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:41:06,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:41:06,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:41:06,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:41:06,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2024-11-28 03:41:10,713 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/769656236/55ee3b28c0dc4cf1a6ffb3e4017436a1/FLAGba2566fdf [2024-11-28 03:41:11,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:41:11,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2024-11-28 03:41:11,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/769656236/55ee3b28c0dc4cf1a6ffb3e4017436a1/FLAGba2566fdf [2024-11-28 03:41:11,154 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/769656236/55ee3b28c0dc4cf1a6ffb3e4017436a1 [2024-11-28 03:41:11,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:41:11,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:41:11,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:11,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:41:11,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:41:11,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57108a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11, skipping insertion in model container [2024-11-28 03:41:11,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:41:11,397 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2024-11-28 03:41:11,427 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2024-11-28 03:41:11,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:11,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:41:11,456 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2024-11-28 03:41:11,469 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2024-11-28 03:41:11,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:11,487 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:41:11,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11 WrapperNode [2024-11-28 03:41:11,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:11,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:11,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:41:11,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:41:11,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,520 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-28 03:41:11,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:11,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:41:11,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:41:11,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:41:11,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,541 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 03:41:11,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,546 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:41:11,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:41:11,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:41:11,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:41:11,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (1/1) ... [2024-11-28 03:41:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:11,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:11,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:41:11,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:41:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:41:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 03:41:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 03:41:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 03:41:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 03:41:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:41:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:41:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:41:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:41:11,684 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:41:11,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:41:11,907 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-28 03:41:11,907 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:41:11,918 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:41:11,918 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:41:11,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:11 BoogieIcfgContainer [2024-11-28 03:41:11,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:41:11,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:41:11,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:41:11,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:41:11,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:41:11" (1/3) ... [2024-11-28 03:41:11,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a158ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:11, skipping insertion in model container [2024-11-28 03:41:11,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:11" (2/3) ... [2024-11-28 03:41:11,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a158ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:11, skipping insertion in model container [2024-11-28 03:41:11,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:11" (3/3) ... [2024-11-28 03:41:11,928 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_8.i [2024-11-28 03:41:11,940 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:41:11,942 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_3+newton_3_8.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 03:41:11,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:41:12,003 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;@4eb73e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:41:12,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:41:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:41:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:41:12,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:12,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:12,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1679801867, now seen corresponding path program 1 times [2024-11-28 03:41:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752988361] [2024-11-28 03:41:12,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:12,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752988361] [2024-11-28 03:41:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752988361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:12,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068623298] [2024-11-28 03:41:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:12,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:12,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:12,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:12,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:12,400 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 03:41:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:12,464 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-28 03:41:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:12,466 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 03:41:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:12,472 INFO L225 Difference]: With dead ends: 83 [2024-11-28 03:41:12,473 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:41:12,476 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 03:41:12,479 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:12,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:41:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:41:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-28 03:41:12,510 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 03:41:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 03:41:12,516 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2024-11-28 03:41:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:12,516 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 03:41:12,517 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 03:41:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 03:41:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:41:12,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:12,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:12,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:41:12,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:12,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1805818803, now seen corresponding path program 1 times [2024-11-28 03:41:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:12,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745333031] [2024-11-28 03:41:12,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:12,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:12,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745333031] [2024-11-28 03:41:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745333031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:12,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:41:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465162255] [2024-11-28 03:41:12,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:12,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:41:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:12,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:41:12,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:41:12,757 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 03:41:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:12,813 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 03:41:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:41:12,815 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 03:41:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:12,817 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:41:12,817 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:41:12,817 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 03:41:12,819 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 03:41:12,819 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 03:41:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:41:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 03:41:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:41:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 03:41:12,833 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 03:41:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:12,834 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 03:41:12,834 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 03:41:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 03:41:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:41:12,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:12,835 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:12,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:41:12,835 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:12,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1545548215, now seen corresponding path program 1 times [2024-11-28 03:41:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:12,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274106690] [2024-11-28 03:41:12,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:12,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:41:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509868821] [2024-11-28 03:41:12,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:12,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:12,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:12,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:41:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:13,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:41:13,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:11,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:35,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274106690] [2024-11-28 03:42:35,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:42:35,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509868821] [2024-11-28 03:42:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509868821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:35,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:42:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-28 03:42:35,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164896936] [2024-11-28 03:42:35,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:35,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:42:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:35,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:42:35,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=226, Unknown=15, NotChecked=0, Total=306 [2024-11-28 03:42:35,112 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 03:42:39,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:42:44,116 WARN L539 Checker$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 03:42:58,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:43:02,876 WARN L539 Checker$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 03:43:07,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:43:12,312 WARN L539 Checker$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 03:43:17,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:43:22,133 WARN L539 Checker$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 03:43:26,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:43:31,539 WARN L539 Checker$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 03:43:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:32,743 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-11-28 03:43:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:43:32,744 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 03:43:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:32,745 INFO L225 Difference]: With dead ends: 51 [2024-11-28 03:43:32,745 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 03:43:32,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=87, Invalid=277, Unknown=16, NotChecked=0, Total=380 [2024-11-28 03:43:32,746 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:32,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 265 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 10 Unknown, 0 Unchecked, 47.0s Time] [2024-11-28 03:43:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 03:43:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-11-28 03:43:32,753 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 03:43:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 03:43:32,755 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2024-11-28 03:43:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:32,755 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 03:43:32,755 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 03:43:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 03:43:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:43:32,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:32,756 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:32,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:43:32,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:32,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:32,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1234680893, now seen corresponding path program 1 times [2024-11-28 03:43:32,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:32,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207736495] [2024-11-28 03:43:32,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:43:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86840057] [2024-11-28 03:43:33,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:33,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:43:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:33,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:43:33,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:54,247 WARN L286 SmtUtils]: Spent 1.37m 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 03:48:20,329 WARN L286 SmtUtils]: Spent 47.56s 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 03:49:45,074 WARN L286 SmtUtils]: Spent 27.19s 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 03:51:26,022 WARN L286 SmtUtils]: Spent 27.96s 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 03:51:58,978 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 03:51:58,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:13,257 WARN L286 SmtUtils]: Spent 23.91s 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 03:53:45,929 WARN L286 SmtUtils]: Spent 9.60s 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 03:54:34,415 WARN L286 SmtUtils]: Spent 7.07s 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 03:55:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207736495] [2024-11-28 03:55:00,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:55:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86840057] [2024-11-28 03:55:00,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86840057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:00,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-28 03:55:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683320088] [2024-11-28 03:55:00,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:00,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:55:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:00,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:55:00,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=342, Unknown=41, NotChecked=0, Total=462 [2024-11-28 03:55:00,313 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 03:55:05,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 03:55:09,377 WARN L539 Checker$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 03:55:13,505 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 03:55:17,541 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/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 03:55:17,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:55:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:55:17,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 424.6s TimeCoverageRelationStatistics Valid=88, Invalid=377, Unknown=41, NotChecked=0, Total=506 [2024-11-28 03:55:17,544 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:17,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2024-11-28 03:55:17,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:17,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:17,746 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_5301bf03-4b40-4abc-abb3-476c2e798f35/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 03:55:17,752 INFO L158 Benchmark]: Toolchain (without parser) took 846593.95ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 117.5MB in the beginning and 338.1MB in the end (delta: -220.6MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. [2024-11-28 03:55:17,752 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:17,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.62ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 105.2MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:17,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.87ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:17,754 INFO L158 Benchmark]: Boogie Preprocessor took 33.48ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:17,754 INFO L158 Benchmark]: RCFGBuilder took 358.55ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 88.8MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:17,755 INFO L158 Benchmark]: TraceAbstraction took 845830.28ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 88.3MB in the beginning and 338.1MB in the end (delta: -249.8MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2024-11-28 03:55:17,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.62ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 105.2MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.87ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.48ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.55ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 88.8MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 845830.28ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 88.3MB in the beginning and 338.1MB in the end (delta: -249.8MB). Peak memory consumption was 65.6MB. 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_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/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_5301bf03-4b40-4abc-abb3-476c2e798f35/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 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:55:20,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:55:20,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 03:55:20,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:55:20,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:55:20,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:55:20,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:55:20,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:55:20,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:55:20,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:55:20,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:55:20,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:55:20,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:55:20,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:55:20,963 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:55:20,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:55:20,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:55:20,964 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:55:20,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:55:20,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:55:20,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:55:20,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:55:20,966 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:20,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:20,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:20,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:20,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:20,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:55:20,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:55:20,967 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:55:20,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:55:20,968 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:55:20,969 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:55:20,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:55:20,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:55:20,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:55:20,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:55:20,970 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_5301bf03-4b40-4abc-abb3-476c2e798f35/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 -> 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a [2024-11-28 03:55:21,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:55:21,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:55:21,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:55:21,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:55:21,343 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:55:21,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2024-11-28 03:55:25,238 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/98ac8bff8/953877fb532845809ae844f43f9414b5/FLAG486de759f [2024-11-28 03:55:25,617 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:55:25,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2024-11-28 03:55:25,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/98ac8bff8/953877fb532845809ae844f43f9414b5/FLAG486de759f [2024-11-28 03:55:25,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/data/98ac8bff8/953877fb532845809ae844f43f9414b5 [2024-11-28 03:55:25,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:55:25,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:55:25,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:25,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:55:25,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:55:25,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:25" (1/1) ... [2024-11-28 03:55:25,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324d3367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:25, skipping insertion in model container [2024-11-28 03:55:25,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:25" (1/1) ... [2024-11-28 03:55:25,881 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:55:26,126 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2024-11-28 03:55:26,186 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2024-11-28 03:55:26,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:26,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:55:26,235 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2024-11-28 03:55:26,264 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_5301bf03-4b40-4abc-abb3-476c2e798f35/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2024-11-28 03:55:26,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:26,302 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:55:26,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26 WrapperNode [2024-11-28 03:55:26,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:26,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:26,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:55:26,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:55:26,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,370 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-28 03:55:26,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:26,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:55:26,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:55:26,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:55:26,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,430 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 03:55:26,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,446 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:55:26,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:55:26,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:55:26,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:55:26,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (1/1) ... [2024-11-28 03:55:26,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:26,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:26,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:55:26,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:55:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:55:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:55:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:55:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 03:55:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 03:55:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 03:55:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 03:55:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:55:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:55:26,707 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:55:26,709 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:55:44,872 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 03:55:44,872 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:55:44,884 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:55:44,884 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:55:44,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:44 BoogieIcfgContainer [2024-11-28 03:55:44,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:55:44,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:55:44,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:55:44,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:55:44,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:55:25" (1/3) ... [2024-11-28 03:55:44,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6825ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:44, skipping insertion in model container [2024-11-28 03:55:44,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:26" (2/3) ... [2024-11-28 03:55:44,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6825ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:44, skipping insertion in model container [2024-11-28 03:55:44,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:44" (3/3) ... [2024-11-28 03:55:44,900 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_8.i [2024-11-28 03:55:44,920 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:55:44,922 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_3+newton_3_8.i that has 3 procedures, 41 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 03:55:44,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:55:45,014 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;@2389818e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:55:45,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:55:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:55:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:55:45,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:45,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:45,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:45,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1679801867, now seen corresponding path program 1 times [2024-11-28 03:55:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132533868] [2024-11-28 03:55:45,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:45,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:45,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:45,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:45,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:55:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:45,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:55:45,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:45,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:55:45,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:45,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132533868] [2024-11-28 03:55:45,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132533868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:45,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:45,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:55:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321297150] [2024-11-28 03:55:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:45,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:55:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:45,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:55:45,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:45,524 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 03:55:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:45,806 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-28 03:55:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:55:45,809 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 03:55:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:45,816 INFO L225 Difference]: With dead ends: 83 [2024-11-28 03:55:45,816 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:55:45,820 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 03:55:45,824 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 03:55:45,825 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 03:55:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:55:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-28 03:55:45,868 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 03:55:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 03:55:45,879 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2024-11-28 03:55:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:45,880 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 03:55:45,881 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 03:55:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 03:55:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:55:45,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:45,882 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:45,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:46,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:46,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:46,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1805818803, now seen corresponding path program 1 times [2024-11-28 03:55:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359459949] [2024-11-28 03:55:46,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:46,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:46,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:55:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:46,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:55:46,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:46,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:55:46,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359459949] [2024-11-28 03:55:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359459949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:55:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346374006] [2024-11-28 03:55:46,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:46,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:55:46,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:46,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:55:46,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:55:46,372 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 03:55:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:46,714 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 03:55:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:55:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:55:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:46,716 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:55:46,716 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:55:46,716 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 03:55:46,717 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:46,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:55:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:55:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 03:55:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:55:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 03:55:46,726 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 03:55:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:46,727 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 03:55:46,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:55:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 03:55:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:55:46,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:46,728 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:46,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:55:46,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:46,933 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:46,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -714141131, now seen corresponding path program 1 times [2024-11-28 03:55:46,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:46,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969642270] [2024-11-28 03:55:46,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:46,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:46,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:46,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:55:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:46,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:55:46,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:47,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:55:47,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969642270] [2024-11-28 03:55:47,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969642270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:47,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:55:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074469396] [2024-11-28 03:55:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:47,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:55:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:47,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:55:47,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:55:47,645 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 03:55:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:47,912 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-28 03:55:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:55:47,913 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 03:55:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:47,914 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:55:47,914 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:55:47,915 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 03:55:47,916 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 03:55:47,916 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 03:55:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:55:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-28 03:55:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:55:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 03:55:47,924 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2024-11-28 03:55:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:47,924 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 03:55:47,924 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 03:55:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 03:55:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:55:47,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:47,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:47,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:48,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:48,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:48,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1545548215, now seen corresponding path program 1 times [2024-11-28 03:55:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414637929] [2024-11-28 03:55:48,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:48,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:48,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:48,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:55:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:48,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:55:48,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:51,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:57,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414637929] [2024-11-28 03:55:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414637929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:57,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-28 03:55:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071037396] [2024-11-28 03:55:57,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:57,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:55:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:57,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:55:57,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:55:57,091 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 03:56:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:00,046 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-11-28 03:56:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:56:00,047 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 03:56:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:00,048 INFO L225 Difference]: With dead ends: 48 [2024-11-28 03:56:00,048 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 03:56:00,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:56:00,051 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:00,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 253 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:56:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 03:56:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-28 03:56:00,062 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 03:56:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 03:56:00,063 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2024-11-28 03:56:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:00,063 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 03:56:00,063 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 03:56:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 03:56:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:56:00,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:00,067 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:00,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:56:00,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:00,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:00,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1270330689, now seen corresponding path program 2 times [2024-11-28 03:56:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:56:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959589037] [2024-11-28 03:56:00,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:56:00,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:00,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:00,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5301bf03-4b40-4abc-abb3-476c2e798f35/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:56:01,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:56:01,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:56:01,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:56:01,320 INFO L279 TraceCheckSpWp]: Computing forward predicates...