./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd --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 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:18:42,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:18:42,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:18:42,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:18:42,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:18:42,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:18:42,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:18:42,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:18:42,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:18:42,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:18:42,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:18:42,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:18:42,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:18:42,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:18:42,415 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:18:42,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:18:42,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:18:42,417 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:18:42,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:18:42,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:18:42,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:18:42,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:18:42,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:18:42,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:18:42,419 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:18:42,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:18:42,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:18:42,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:18:42,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:18:42,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:18:42,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:18:42,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:18:42,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:42,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:18:42,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:18:42,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:18:42,421 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 [2024-11-13 16:18:42,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:18:42,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:18:42,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:18:42,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:18:42,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:18:42,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i Unable to find full path for "g++" [2024-11-13 16:18:44,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:18:44,841 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:18:44,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-13 16:18:44,860 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/1f165644a/b336c94d8a5f41e69aad57f0a6289325/FLAGa73d32d37 [2024-11-13 16:18:45,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/1f165644a/b336c94d8a5f41e69aad57f0a6289325 [2024-11-13 16:18:45,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:18:45,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:18:45,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:45,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:18:45,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:18:45,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f9b3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45, skipping insertion in model container [2024-11-13 16:18:45,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:18:45,331 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-13 16:18:45,372 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-13 16:18:45,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:45,382 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:18:45,392 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-13 16:18:45,402 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-13 16:18:45,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:45,417 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:18:45,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45 WrapperNode [2024-11-13 16:18:45,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:45,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:45,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:18:45,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:18:45,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,458 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-13 16:18:45,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:45,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:18:45,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:18:45,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:18:45,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,495 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]. [2024-11-13 16:18:45,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:18:45,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:18:45,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:18:45,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:18:45,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (1/1) ... [2024-11-13 16:18:45,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:45,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:45,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:18:45,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:18:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:18:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-13 16:18:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-13 16:18:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 16:18:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 16:18:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:18:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:18:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:18:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:18:45,695 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:18:45,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:18:45,937 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-13 16:18:45,937 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:18:45,952 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:18:45,952 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:18:45,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:45 BoogieIcfgContainer [2024-11-13 16:18:45,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:18:45,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:18:45,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:18:45,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:18:45,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:18:45" (1/3) ... [2024-11-13 16:18:45,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298f1d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:45, skipping insertion in model container [2024-11-13 16:18:45,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:45" (2/3) ... [2024-11-13 16:18:45,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298f1d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:45, skipping insertion in model container [2024-11-13 16:18:45,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:45" (3/3) ... [2024-11-13 16:18:45,964 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_2.i [2024-11-13 16:18:45,981 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:18:45,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_2_2.i that has 3 procedures, 37 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 16:18:46,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:18:46,064 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;@129cdaf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:18:46,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 16:18:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:18:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:18:46,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:46,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:46,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:46,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -252399053, now seen corresponding path program 1 times [2024-11-13 16:18:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:46,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272873351] [2024-11-13 16:18:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272873351] [2024-11-13 16:18:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272873351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:46,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:46,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:18:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086221290] [2024-11-13 16:18:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:46,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:18:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:18:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:18:46,449 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2024-11-13 16:18:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:46,496 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2024-11-13 16:18:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:18:46,499 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 [2024-11-13 16:18:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:46,507 INFO L225 Difference]: With dead ends: 68 [2024-11-13 16:18:46,507 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 16:18:46,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:18:46,515 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:46,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 16:18:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 16:18:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:18:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 16:18:46,548 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2024-11-13 16:18:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:46,548 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 16:18:46,548 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) [2024-11-13 16:18:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 16:18:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:18:46,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:46,550 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:46,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:18:46,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:46,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1702741296, now seen corresponding path program 1 times [2024-11-13 16:18:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729492485] [2024-11-13 16:18:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:47,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:47,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729492485] [2024-11-13 16:18:47,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729492485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:47,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533581256] [2024-11-13 16:18:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:47,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:47,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:18:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:47,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:18:47,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:47,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533581256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:47,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-13 16:18:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324387131] [2024-11-13 16:18:47,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:47,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:18:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:18:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:18:47,238 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-13 16:18:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:47,305 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-13 16:18:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:18:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 12 [2024-11-13 16:18:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:47,306 INFO L225 Difference]: With dead ends: 36 [2024-11-13 16:18:47,306 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 16:18:47,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:18:47,307 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:47,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:18:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 16:18:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 16:18:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:18:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 16:18:47,314 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2024-11-13 16:18:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:47,314 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 16:18:47,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-13 16:18:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 16:18:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:18:47,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:47,315 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:47,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:18:47,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:47,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:47,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1193717935, now seen corresponding path program 2 times [2024-11-13 16:18:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:47,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031061600] [2024-11-13 16:18:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:18:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547720899] [2024-11-13 16:18:47,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:18:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:47,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:18:56,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:18:56,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:56,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 16:18:56,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:07,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:36,437 WARN L286 SmtUtils]: Spent 45.59s on a formula simplification. DAG size of input: 125 DAG size of output: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:21:17,899 WARN L286 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:21:29,411 WARN L286 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:21:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:30,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031061600] [2024-11-13 16:21:30,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:21:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547720899] [2024-11-13 16:21:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547720899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:30,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:21:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 15 [2024-11-13 16:21:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286414078] [2024-11-13 16:21:30,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:30,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:21:30,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:21:30,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=162, Unknown=4, NotChecked=0, Total=210 [2024-11-13 16:21:30,968 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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) [2024-11-13 16:21:39,600 WARN L286 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 44 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:21:43,663 WARN L851 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (<= 1 |c_ULTIMATE.start_main1_~y~0#1|) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_main1_~y~0#1|) 0) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (or (let ((.cse0 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (and (let ((.cse1 (mod .cse0 |c_ULTIMATE.start_gcd_test_~b#1|))) (or (< 127 .cse0) (not (= (mod |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse1 256)) 0)) (= .cse1 0) (= |c_ULTIMATE.start_main1_~y~0#1| .cse1))) (let ((.cse3 (mod (+ .cse0 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse2 (mod (+ .cse3 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (or (not (= (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse2)) 0)) (= .cse2 (+ |c_ULTIMATE.start_main1_~y~0#1| 256)) (= .cse3 0) (< .cse0 128)))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (= |c_ULTIMATE.start_main1_~y~0#1| |c_ULTIMATE.start_gcd_test_~b#1|)) is different from false [2024-11-13 16:21:47,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 16:21:50,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 16:22:05,395 WARN L286 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 58 DAG size of output: 52 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:22:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:05,637 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-13 16:22:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:22:05,638 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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 [2024-11-13 16:22:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:05,639 INFO L225 Difference]: With dead ends: 40 [2024-11-13 16:22:05,639 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 16:22:05,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 117.3s TimeCoverageRelationStatistics Valid=59, Invalid=212, Unknown=5, NotChecked=30, Total=306 [2024-11-13 16:22:05,641 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:05,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 1 Unknown, 26 Unchecked, 6.9s Time] [2024-11-13 16:22:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 16:22:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 16:22:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:22:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-11-13 16:22:05,648 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 13 [2024-11-13 16:22:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:05,649 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-11-13 16:22:05,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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) [2024-11-13 16:22:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-11-13 16:22:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:22:05,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:05,650 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:05,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:05,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:05,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:05,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash -513659565, now seen corresponding path program 1 times [2024-11-13 16:22:05,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:05,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194522730] [2024-11-13 16:22:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:06,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194522730] [2024-11-13 16:22:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194522730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:06,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407352388] [2024-11-13 16:22:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:06,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:06,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:06,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:06,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:22:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:06,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 16:22:06,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:07,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:15,947 WARN L286 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:23:42,118 WARN L286 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 125 DAG size of output: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:23:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407352388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:49,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:49,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 10] total 17 [2024-11-13 16:23:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966167727] [2024-11-13 16:23:49,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:49,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:23:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:23:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:23:49,387 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:49,432 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-11-13 16:23:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:23:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 16:23:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:49,434 INFO L225 Difference]: With dead ends: 31 [2024-11-13 16:23:49,434 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 16:23:49,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:23:49,435 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:49,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:23:49,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 16:23:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-13 16:23:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:23:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-13 16:23:49,439 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2024-11-13 16:23:49,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:49,440 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-13 16:23:49,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-13 16:23:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:23:49,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:49,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:49,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:23:49,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:49,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:23:49,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash -17555527, now seen corresponding path program 1 times [2024-11-13 16:23:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48822362] [2024-11-13 16:23:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:23:49,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 16:23:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:23:49,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 16:23:49,684 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 16:23:49,685 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 16:23:49,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 16:23:49,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:23:49,693 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-13 16:23:49,718 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:23:49,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:23:49 BoogieIcfgContainer [2024-11-13 16:23:49,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:23:49,723 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:23:49,723 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:23:49,723 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:23:49,724 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:45" (3/4) ... [2024-11-13 16:23:49,727 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 16:23:49,728 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:23:49,729 INFO L158 Benchmark]: Toolchain (without parser) took 304600.76ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 118.2MB in the beginning and 240.2MB in the end (delta: -122.0MB). Peak memory consumption was 224.1MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,729 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:23:49,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.07ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 106.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.04ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 104.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:23:49,730 INFO L158 Benchmark]: Boogie Preprocessor took 56.17ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,731 INFO L158 Benchmark]: RCFGBuilder took 434.12ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 88.8MB in the end (delta: 14.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,731 INFO L158 Benchmark]: TraceAbstraction took 303767.66ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 88.4MB in the beginning and 240.3MB in the end (delta: -152.0MB). Peak memory consumption was 190.5MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,732 INFO L158 Benchmark]: Witness Printer took 5.40ms. Allocated memory is still 486.5MB. Free memory was 240.3MB in the beginning and 240.2MB in the end (delta: 99.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:23:49,734 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.07ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 106.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.04ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 104.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.17ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 434.12ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 88.8MB in the end (delta: 14.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 303767.66ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 88.4MB in the beginning and 240.3MB in the end (delta: -152.0MB). Peak memory consumption was 190.5MB. Max. memory is 16.1GB. * Witness Printer took 5.40ms. Allocated memory is still 486.5MB. Free memory was 240.3MB in the beginning and 240.2MB in the end (delta: 99.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93, overapproximation of someBinaryArithmeticFLOAToperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 95. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111] [L93] RET, EXPR f(IN) VAL [IN=111] [L93] CALL, EXPR fp(IN) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111] [L93] RET, EXPR fp(IN) VAL [IN=111] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=110] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=110] [L95] RET, EXPR f(x) VAL [IN=111, x=110] [L95] CALL, EXPR fp(x) VAL [\old(x)=110] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=110] [L95] RET, EXPR fp(x) VAL [IN=111, x=110] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=111] [L102] reach_error() VAL [IN=111] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 303.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 592 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 26 IncrementalHoareTripleChecker+Unchecked, 475 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 117 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 186.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 9.5s SatisfiabilityAnalysisTime, 258.2s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 103 ConstructedInterpolants, 4 QuantifiedInterpolants, 4252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 6/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 16:23:49,945 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-13 16:23:49,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd --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 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:23:52,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:23:52,850 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 16:23:52,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:23:52,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:23:52,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:23:52,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:23:52,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:23:52,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:23:52,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:23:52,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:23:52,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:23:52,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:23:52,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:23:52,913 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:23:52,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:23:52,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:23:52,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:23:52,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:23:52,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:23:52,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:23:52,915 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:23:52,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:23:52,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:23:52,916 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:23:52,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:23:52,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:23:52,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:23:52,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:23:52,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:23:52,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:23:52,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:23:52,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:23:52,917 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:23:52,918 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:23:52,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:23:52,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:23:52,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:23:52,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:23:52,918 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 [2024-11-13 16:23:53,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:23:53,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:23:53,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:23:53,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:23:53,298 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:23:53,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i Unable to find full path for "g++" [2024-11-13 16:23:55,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:23:55,876 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:23:55,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-13 16:23:55,887 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/3cc1441c3/c79ed417346546e3814aec8770f3b82e/FLAG781707e2a [2024-11-13 16:23:55,908 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/data/3cc1441c3/c79ed417346546e3814aec8770f3b82e [2024-11-13 16:23:55,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:23:55,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:23:55,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:23:55,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:23:55,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:23:55,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:23:55" (1/1) ... [2024-11-13 16:23:55,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c09a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:55, skipping insertion in model container [2024-11-13 16:23:55,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:23:55" (1/1) ... [2024-11-13 16:23:55,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:23:56,168 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-13 16:23:56,225 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-13 16:23:56,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:23:56,260 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:23:56,281 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-13 16:23:56,307 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_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-13 16:23:56,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:23:56,337 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:23:56,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56 WrapperNode [2024-11-13 16:23:56,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:23:56,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:23:56,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:23:56,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:23:56,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,406 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2024-11-13 16:23:56,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:23:56,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:23:56,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:23:56,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:23:56,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,452 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]. [2024-11-13 16:23:56,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:23:56,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:23:56,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:23:56,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:23:56,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (1/1) ... [2024-11-13 16:23:56,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:23:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:56,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:23:56,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 16:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 16:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-13 16:23:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-13 16:23:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 16:23:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 16:23:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:23:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:23:56,740 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:23:56,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:24:08,325 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 16:24:08,325 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:24:08,337 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:24:08,338 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:24:08,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:24:08 BoogieIcfgContainer [2024-11-13 16:24:08,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:24:08,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:24:08,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:24:08,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:24:08,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:23:55" (1/3) ... [2024-11-13 16:24:08,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c60b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:24:08, skipping insertion in model container [2024-11-13 16:24:08,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:23:56" (2/3) ... [2024-11-13 16:24:08,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c60b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:24:08, skipping insertion in model container [2024-11-13 16:24:08,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:24:08" (3/3) ... [2024-11-13 16:24:08,353 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_2.i [2024-11-13 16:24:08,371 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:24:08,373 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_2_2.i that has 3 procedures, 37 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 16:24:08,443 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:24:08,458 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;@65dc1d60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:24:08,458 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 16:24:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:24:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:24:08,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:08,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:08,475 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:08,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -252399053, now seen corresponding path program 1 times [2024-11-13 16:24:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:24:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628870763] [2024-11-13 16:24:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:08,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:08,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:24:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:08,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:24:08,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:08,943 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:24:08,944 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:24:08,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628870763] [2024-11-13 16:24:08,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628870763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:08,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:24:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726431594] [2024-11-13 16:24:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:08,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:24:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:24:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:24:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:24:08,984 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2024-11-13 16:24:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:09,107 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2024-11-13 16:24:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:24:09,111 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 [2024-11-13 16:24:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:09,118 INFO L225 Difference]: With dead ends: 68 [2024-11-13 16:24:09,119 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 16:24:09,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:24:09,127 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:09,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:24:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 16:24:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 16:24:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:24:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 16:24:09,174 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2024-11-13 16:24:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:09,174 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 16:24:09,175 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) [2024-11-13 16:24:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 16:24:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:24:09,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:09,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:09,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:24:09,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:09,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:09,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1702741296, now seen corresponding path program 1 times [2024-11-13 16:24:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:24:09,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685740684] [2024-11-13 16:24:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:09,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:09,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:24:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:09,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:24:09,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:10,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:11,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:24:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685740684] [2024-11-13 16:24:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685740684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:11,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:24:11,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-13 16:24:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788273670] [2024-11-13 16:24:11,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:11,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:24:11,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:24:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:24:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:24:11,267 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2024-11-13 16:24:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:11,739 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-13 16:24:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:24:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 12 [2024-11-13 16:24:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:11,741 INFO L225 Difference]: With dead ends: 36 [2024-11-13 16:24:11,741 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 16:24:11,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:24:11,743 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:11,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 151 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:24:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 16:24:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 16:24:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:24:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 16:24:11,752 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2024-11-13 16:24:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:11,752 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 16:24:11,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2024-11-13 16:24:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 16:24:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:24:11,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:11,754 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:11,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:24:11,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:11,958 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1193717935, now seen corresponding path program 2 times [2024-11-13 16:24:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:24:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353879325] [2024-11-13 16:24:11,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:24:11,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:11,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:11,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:11,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:24:15,202 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:24:15,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:15,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 16:24:15,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:20,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:32,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:24:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353879325] [2024-11-13 16:24:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353879325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:32,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:24:32,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2024-11-13 16:24:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117941429] [2024-11-13 16:24:32,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:32,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:24:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:24:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:24:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:24:32,386 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2024-11-13 16:24:37,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 16:24:41,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:24:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:51,293 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-13 16:24:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:24:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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 [2024-11-13 16:24:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:51,294 INFO L225 Difference]: With dead ends: 45 [2024-11-13 16:24:51,295 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 16:24:51,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:24:51,296 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:51,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 187 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2024-11-13 16:24:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 16:24:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 16:24:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:24:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-13 16:24:51,305 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 13 [2024-11-13 16:24:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:51,305 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-13 16:24:51,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2024-11-13 16:24:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-13 16:24:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:24:51,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:51,306 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:51,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:24:51,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:51,507 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:51,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1947347123, now seen corresponding path program 1 times [2024-11-13 16:24:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:24:51,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667420569] [2024-11-13 16:24:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:51,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:51,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:51,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:24:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:53,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:24:53,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:24:55,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:15,023 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:25:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667420569] [2024-11-13 16:25:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667420569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:15,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:25:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2024-11-13 16:25:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175912999] [2024-11-13 16:25:15,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:15,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:25:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:25:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:25:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:25:15,025 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2024-11-13 16:25:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:15,327 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-13 16:25:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:25:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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 15 [2024-11-13 16:25:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:15,337 INFO L225 Difference]: With dead ends: 33 [2024-11-13 16:25:15,337 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 16:25:15,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:25:15,339 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:15,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:25:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 16:25:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-13 16:25:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:25:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-13 16:25:15,347 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2024-11-13 16:25:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:15,347 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-13 16:25:15,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2024-11-13 16:25:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-13 16:25:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:25:15,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:15,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:15,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:25:15,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:15,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:25:15,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash -17555527, now seen corresponding path program 1 times [2024-11-13 16:25:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:25:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75466239] [2024-11-13 16:25:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:15,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 16:25:15,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 16:25:15,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 16:25:15,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c757d30a-81a4-4ecd-a42f-d5de84c1c0dc/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process