./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+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_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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_885715b4-06c2-4c57-a248-0e443d416b32/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 edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:27:21,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:27:21,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:27:21,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:27:21,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:27:21,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:27:21,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:27:21,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:27:21,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:27:21,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:27:21,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:27:21,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:27:21,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:27:21,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:27:21,337 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:27:21,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:27:21,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:27:21,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:27:21,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:27:21,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:27:21,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:27:21,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:27:21,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:27:21,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:27:21,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:27:21,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:27:21,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:21,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:27:21,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:27:21,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:27:21,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:27:21,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:27:21,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:27:21,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:27:21,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:27:21,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:27:21,343 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_885715b4-06c2-4c57-a248-0e443d416b32/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 -> edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a [2024-11-13 13:27:21,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:27:21,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:27:21,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:27:21,770 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:27:21,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:27:21,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i Unable to find full path for "g++" [2024-11-13 13:27:23,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:27:24,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:27:24,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i [2024-11-13 13:27:24,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/e71f03b8f/13188a170c2842c481f5186dec9ca6fe/FLAGf24e1f829 [2024-11-13 13:27:24,340 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/e71f03b8f/13188a170c2842c481f5186dec9ca6fe [2024-11-13 13:27:24,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:27:24,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:27:24,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:24,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:27:24,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:27:24,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e651b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24, skipping insertion in model container [2024-11-13 13:27:24,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:27:24,581 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2024-11-13 13:27:24,620 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2024-11-13 13:27:24,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:24,639 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:27:24,654 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2024-11-13 13:27:24,670 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2024-11-13 13:27:24,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:24,686 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:27:24,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24 WrapperNode [2024-11-13 13:27:24,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:24,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:24,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:27:24,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:27:24,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,741 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-13 13:27:24,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:24,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:27:24,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:27:24,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:27:24,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,791 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 13:27:24,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:27:24,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:27:24,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:27:24,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:27:24,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (1/1) ... [2024-11-13 13:27:24,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:24,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:24,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:27:24,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:27:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:27:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-13 13:27:24,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-13 13:27:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 13:27:24,922 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 13:27:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:27:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:27:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:27:24,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:27:25,014 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:27:25,016 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:27:25,338 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 13:27:25,338 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:27:25,361 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:27:25,361 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:27:25,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:25 BoogieIcfgContainer [2024-11-13 13:27:25,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:27:25,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:27:25,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:27:25,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:27:25,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:24" (1/3) ... [2024-11-13 13:27:25,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327fa3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:25, skipping insertion in model container [2024-11-13 13:27:25,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:24" (2/3) ... [2024-11-13 13:27:25,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327fa3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:25, skipping insertion in model container [2024-11-13 13:27:25,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:25" (3/3) ... [2024-11-13 13:27:25,377 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_2.i [2024-11-13 13:27:25,398 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:27:25,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_2+newton_2_2.i that has 3 procedures, 37 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 13:27:25,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:27:25,502 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;@7982cb6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:27:25,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:27:25,508 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 13:27:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:27:25,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:25,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:25,519 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:27:25,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1738968779, now seen corresponding path program 1 times [2024-11-13 13:27:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501193149] [2024-11-13 13:27:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:25,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:25,970 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 13:27:25,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501193149] [2024-11-13 13:27:25,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501193149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:25,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:25,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:27:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608982846] [2024-11-13 13:27:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:25,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:26,013 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:26,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:26,124 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-11-13 13:27:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 13:27:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:26,138 INFO L225 Difference]: With dead ends: 72 [2024-11-13 13:27:26,138 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:27:26,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:26,147 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:26,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:27:26,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:27:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-13 13:27:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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 13:27:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-13 13:27:26,197 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2024-11-13 13:27:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:26,199 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-13 13:27:26,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-13 13:27:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:27:26,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:26,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:26,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:27:26,201 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:27:26,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 36038583, now seen corresponding path program 1 times [2024-11-13 13:27:26,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309709674] [2024-11-13 13:27:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:26,402 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 13:27:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309709674] [2024-11-13 13:27:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309709674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:27:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996696470] [2024-11-13 13:27:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:26,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:27:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:27:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:26,406 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:26,435 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-13 13:27:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:27:26,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 13:27:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:26,437 INFO L225 Difference]: With dead ends: 36 [2024-11-13 13:27:26,437 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:27:26,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:27:26,439 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:26,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:27:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:27:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 13:27:26,445 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 13:27:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 13:27:26,446 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2024-11-13 13:27:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:26,446 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 13:27:26,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:27:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 13:27:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:27:26,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:26,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:26,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:27:26,448 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:27:26,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1576478087, now seen corresponding path program 1 times [2024-11-13 13:27:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581627856] [2024-11-13 13:27:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:26,850 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 13:27:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581627856] [2024-11-13 13:27:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581627856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:26,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432236085] [2024-11-13 13:27:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:26,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:26,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:26,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:27:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:26,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:27:26,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:27:27,126 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 13:27:27,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:27:27,286 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 13:27:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432236085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:27:27,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:27:27,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 13:27:27,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824678972] [2024-11-13 13:27:27,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:27:27,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:27:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:27,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:27:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:27:27,291 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 13:27:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:27:27,489 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-13 13:27:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:27:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 13:27:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:27:27,493 INFO L225 Difference]: With dead ends: 37 [2024-11-13 13:27:27,493 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 13:27:27,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:27:27,494 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:27:27,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 176 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:27:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 13:27:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 13:27:27,502 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 13:27:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 13:27:27,503 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2024-11-13 13:27:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:27:27,503 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 13:27:27,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 13:27:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 13:27:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 13:27:27,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:27:27,504 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:27:27,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:27:27,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:27,710 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:27:27,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -24887305, now seen corresponding path program 2 times [2024-11-13 13:27:27,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:27,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682480550] [2024-11-13 13:27:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:28,448 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 13:27:28,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682480550] [2024-11-13 13:27:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682480550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:27:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316893273] [2024-11-13 13:27:28,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:27:28,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:27:28,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:28,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:27:28,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:27:28,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:27:28,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:27:28,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 13:27:28,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:12,476 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 13:29:12,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:01,366 WARN L286 SmtUtils]: Spent 10.31s on a formula simplification that was a NOOP. DAG size: 106 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:30:17,384 WARN L286 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:30:22,622 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 13:30:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316893273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:22,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2024-11-13 13:30:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393645577] [2024-11-13 13:30:22,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:22,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:30:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:30:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=439, Unknown=20, NotChecked=0, Total=552 [2024-11-13 13:30:22,625 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 13:30:27,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:30:32,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:30:36,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:30:40,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:30:44,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2024-11-13 13:30:48,691 WARN L539 Checker$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 13:30:52,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:30:57,536 WARN L539 Checker$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 13:31:04,974 WARN L286 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 111 DAG size of output: 177 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:31:09,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 13:31:14,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 13:31:18,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 13:31:22,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2024-11-13 13:31:27,352 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, 1] [2024-11-13 13:31:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:28,582 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-13 13:31:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:31:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 13:31:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:28,584 INFO L225 Difference]: With dead ends: 47 [2024-11-13 13:31:28,584 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 13:31:28,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 142.3s TimeCoverageRelationStatistics Valid=121, Invalid=561, Unknown=20, NotChecked=0, Total=702 [2024-11-13 13:31:28,585 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:28,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 343 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 12 Unknown, 0 Unchecked, 56.7s Time] [2024-11-13 13:31:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 13:31:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-13 13:31:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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 13:31:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-13 13:31:28,596 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2024-11-13 13:31:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:28,596 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-13 13:31:28,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 13:31:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-13 13:31:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:31:28,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:28,597 INFO L215 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:28,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:31:28,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:28,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:28,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash -710557577, now seen corresponding path program 3 times [2024-11-13 13:31:28,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:28,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554830916] [2024-11-13 13:31:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:28,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:36,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:36,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554830916] [2024-11-13 13:31:36,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554830916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:36,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979638639] [2024-11-13 13:31:36,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:31:36,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:36,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:36,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:31:37,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:31:37,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:37,192 WARN L253 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 13:31:37,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:24,981 WARN L286 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 168 DAG size of output: 166 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:33:04,973 WARN L851 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (let ((.cse15 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse16 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (let ((.cse10 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse9 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) (.cse37 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_25| 1) 0) (not (= .cse69 0)) (= (mod (+ .cse15 .cse69) 256) .cse16)))))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse2 (mod .cse1 256))) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse2))) (and (<= (mod (+ .cse0 .cse1) 256) 127) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_25|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|)) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse2))) (<= .cse2 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (not (= .cse2 0))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse5 (mod .cse4 256))) (let ((.cse3 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse5))) (and (<= 128 (mod (+ .cse3 .cse4) 256)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_25|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|)) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse5))) (<= .cse5 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse3) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= (mod .cse3 256) 127)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse6 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse8 (mod (+ .cse9 .cse6) 256))) (let ((.cse7 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse8)))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= 128 (mod (+ (* 255 .cse6) |c_ULTIMATE.start_main1_~y~0#1| .cse7) 256)) (not (= .cse6 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse7) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= 128 .cse8) (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse8) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse11 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse13 (mod (+ .cse9 .cse11) 256))) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse13)))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (not (= .cse11 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse12) (<= 128 .cse13) (<= (mod (+ (* 255 .cse11) |c_ULTIMATE.start_main1_~y~0#1| .cse12) 256) 127) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse14 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse13) (not (= .cse14 0)) (= (mod (+ .cse15 .cse14) 256) .cse16))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse17 (mod .cse19 256))) (let ((.cse20 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse17)))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse17) (not (= .cse18 0)) (= (mod (+ .cse15 .cse18) 256) .cse16)))) (<= (mod (+ (* 255 .cse19) .cse20) 256) 127) (<= 128 .cse17) (= .cse20 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse23 (mod .cse22 256))) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse23))) (and (<= 128 (mod (+ .cse21 .cse22) 256)) (<= .cse23 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse21) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= (mod .cse21 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse23) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse24 (mod (+ .cse9 .cse26) 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse24))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse24) (<= 128 (mod (+ .cse9 .cse25 .cse26) 256)) (not (= .cse26 0)) (<= (mod .cse25 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= .cse24 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse25) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse29 (mod (+ .cse9 .cse28) 256))) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse29))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= 128 (mod (+ .cse9 .cse27 .cse28) 256)) (not (= .cse28 0)) (<= (mod .cse27 256) 127) (<= .cse29 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse27) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_25|) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse29) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse32 (mod .cse30 256))) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse32)))) (and (<= (mod (+ (* 255 .cse30) .cse31) 256) 127) (<= 128 .cse32) (= .cse31 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse32) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse35 (mod (+ .cse9 .cse33) 256))) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse35)))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= 128 (mod (+ (* 255 .cse33) |c_ULTIMATE.start_main1_~y~0#1| .cse34) 256)) (not (= .cse33 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse34) (<= 128 .cse35) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse35) (not (= .cse36 0)) (= (mod (+ .cse15 .cse36) 256) .cse16))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (and .cse37 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse40 (mod .cse39 256))) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse40))) (and (<= (mod (+ .cse38 .cse39) 256) 127) (<= .cse40 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse38) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (not (= .cse40 0)))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse43 (mod .cse42 256))) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse43))) (and (<= (mod (+ .cse41 .cse42) 256) 127) (<= .cse43 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse41) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse43) (not (= .cse43 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse44 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse46 (mod .cse44 256))) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse46)))) (and (<= 128 (mod (+ (* 255 .cse44) .cse45) 256)) (<= 128 .cse46) (= .cse45 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse46) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (and .cse37 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse49 (mod .cse48 256))) (let ((.cse47 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse49))) (and (<= 128 (mod (+ .cse47 .cse48) 256)) (<= .cse49 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse47) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|) (<= (mod .cse47 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse52 (mod (+ .cse9 .cse51) 256))) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse52))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= (mod (+ .cse9 .cse50 .cse51) 256) 127) (not (= .cse52 0)) (not (= .cse51 0)) (<= .cse52 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse50) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_25|) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse52) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse55 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse53 (mod .cse55 256))) (let ((.cse56 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse53)))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse53) (not (= .cse54 0)) (= (mod (+ .cse15 .cse54) 256) .cse16)))) (<= 128 (mod (+ (* 255 .cse55) .cse56) 256)) (<= 128 .cse53) (= .cse56 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_23|)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse59 (mod (+ .cse9 .cse57) 256))) (let ((.cse58 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| (+ (- 256) .cse59)))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (not (= .cse57 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse58) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= 128 .cse59) (<= (mod (+ (* 255 .cse57) |c_ULTIMATE.start_main1_~y~0#1| .cse58) 256) 127) (<= (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_25|) .cse59) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse10) (and .cse37 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse62 (mod (+ .cse9 .cse61) 256))) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse62))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= 128 (mod (+ .cse9 .cse60 .cse61) 256)) (not (= .cse61 0)) (<= (mod .cse60 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= .cse62 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse60))))))) (and .cse10 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse64 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse65 (mod (+ .cse9 .cse64) 256))) (let ((.cse63 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse65))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= (mod (+ .cse9 .cse63 .cse64) 256) 127) (not (= .cse65 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_25| .cse65) (not (= .cse64 0)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= .cse65 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse63) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_gcd_test_~a#1|) 0))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| Int) (|v_ULTIMATE.start_gcd_test_~a#1_23| Int)) (let ((.cse67 (mod |v_ULTIMATE.start_gcd_test_~a#1_23| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse68 (mod (+ .cse9 .cse67) 256))) (let ((.cse66 (mod |v_ULTIMATE.start_gcd_test_~a#1_24| .cse68))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_23| 1) 0) (<= (mod (+ .cse9 .cse66 .cse67) 256) 127) (not (= .cse68 0)) (not (= .cse67 0)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_24|) (<= .cse68 127) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse66)))))) .cse37)))) (<= 0 |c_ULTIMATE.start_main1_~y~0#1|) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2024-11-13 13:34:35,979 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 13:34:35,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 13:34:35,980 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 13:34:35,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:34:36,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:36,182 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-11-13 13:34:36,189 INFO L158 Benchmark]: Toolchain (without parser) took 431840.36ms. Allocated memory was 142.6MB in the beginning and 528.5MB in the end (delta: 385.9MB). Free memory was 118.7MB in the beginning and 476.0MB in the end (delta: -357.3MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2024-11-13 13:34:36,190 INFO L158 Benchmark]: CDTParser took 1.66ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:34:36,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.86ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:34:36,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.60ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 105.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:34:36,191 INFO L158 Benchmark]: Boogie Preprocessor took 79.32ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:34:36,191 INFO L158 Benchmark]: RCFGBuilder took 535.50ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 89.7MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:34:36,192 INFO L158 Benchmark]: TraceAbstraction took 430822.82ms. Allocated memory was 142.6MB in the beginning and 528.5MB in the end (delta: 385.9MB). Free memory was 89.2MB in the beginning and 476.0MB in the end (delta: -386.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:34:36,194 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.86ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.60ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 105.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 79.32ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 535.50ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 89.7MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 430822.82ms. Allocated memory was 142.6MB in the beginning and 528.5MB in the end (delta: 385.9MB). Free memory was 89.2MB in the beginning and 476.0MB in the end (delta: -386.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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_885715b4-06c2-4c57-a248-0e443d416b32/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 edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:34:39,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:34:39,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 13:34:39,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:34:39,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:34:39,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:34:39,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:34:39,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:34:39,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:34:39,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:34:39,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:34:39,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:34:39,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:34:39,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:34:39,446 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:34:39,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:34:39,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:34:39,446 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:34:39,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:34:39,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:34:39,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:34:39,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:34:39,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:34:39,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:34:39,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:34:39,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:34:39,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:34:39,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:34:39,451 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_885715b4-06c2-4c57-a248-0e443d416b32/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 -> edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a [2024-11-13 13:34:39,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:34:39,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:34:39,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:34:39,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:34:39,870 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:34:39,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i Unable to find full path for "g++" [2024-11-13 13:34:42,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:34:42,569 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:34:42,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i [2024-11-13 13:34:42,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/c6f8d3887/239c11b2479b482294625be48a75f6dc/FLAGa71aa625a [2024-11-13 13:34:42,621 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/data/c6f8d3887/239c11b2479b482294625be48a75f6dc [2024-11-13 13:34:42,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:34:42,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:34:42,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:34:42,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:34:42,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:34:42,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:34:42" (1/1) ... [2024-11-13 13:34:42,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34debcd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:42, skipping insertion in model container [2024-11-13 13:34:42,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:34:42" (1/1) ... [2024-11-13 13:34:42,663 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:34:42,898 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2024-11-13 13:34:42,960 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2024-11-13 13:34:42,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:34:42,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:34:43,006 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2024-11-13 13:34:43,034 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_885715b4-06c2-4c57-a248-0e443d416b32/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2024-11-13 13:34:43,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:34:43,066 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:34:43,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43 WrapperNode [2024-11-13 13:34:43,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:34:43,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:34:43,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:34:43,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:34:43,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,135 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2024-11-13 13:34:43,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:34:43,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:34:43,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:34:43,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:34:43,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,176 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 13:34:43,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:34:43,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:34:43,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:34:43,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:34:43,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (1/1) ... [2024-11-13 13:34:43,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:34:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:43,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:34:43,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:34:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:34:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:34:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 13:34:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-13 13:34:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-13 13:34:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 13:34:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 13:34:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:34:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:34:43,380 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:34:43,382 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:34:56,060 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-13 13:34:56,061 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:34:56,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:34:56,073 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:34:56,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:34:56 BoogieIcfgContainer [2024-11-13 13:34:56,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:34:56,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:34:56,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:34:56,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:34:56,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:34:42" (1/3) ... [2024-11-13 13:34:56,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca69fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:34:56, skipping insertion in model container [2024-11-13 13:34:56,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:43" (2/3) ... [2024-11-13 13:34:56,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca69fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:34:56, skipping insertion in model container [2024-11-13 13:34:56,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:34:56" (3/3) ... [2024-11-13 13:34:56,090 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_2.i [2024-11-13 13:34:56,115 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:34:56,118 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_2+newton_2_2.i that has 3 procedures, 37 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 13:34:56,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:34:56,227 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;@73807722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:34:56,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:34:56,234 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 13:34:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:34:56,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:56,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:56,246 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:56,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1738968779, now seen corresponding path program 1 times [2024-11-13 13:34:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:34:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153610171] [2024-11-13 13:34:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:56,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:56,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:56,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:34:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:56,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:34:56,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:56,833 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 13:34:56,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:34:56,836 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:34:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153610171] [2024-11-13 13:34:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153610171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:56,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:34:56,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:34:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916707581] [2024-11-13 13:34:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:56,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:34:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:34:56,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:34:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:34:56,880 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:57,183 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-11-13 13:34:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:34:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 13:34:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:57,194 INFO L225 Difference]: With dead ends: 72 [2024-11-13 13:34:57,194 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:34:57,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:34:57,201 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:57,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:34:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:34:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-13 13:34:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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 13:34:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-13 13:34:57,242 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2024-11-13 13:34:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:57,243 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-13 13:34:57,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-13 13:34:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:34:57,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:57,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:57,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:34:57,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:57,449 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:57,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash 36038583, now seen corresponding path program 1 times [2024-11-13 13:34:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:34:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034846183] [2024-11-13 13:34:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:57,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:57,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:34:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:57,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:34:57,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:34:57,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:34:57,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:34:57,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034846183] [2024-11-13 13:34:57,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034846183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:57,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:34:57,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:34:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763129366] [2024-11-13 13:34:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:57,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:34:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:34:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:34:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:34:57,796 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:57,945 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-13 13:34:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:34:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 13:34:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:57,947 INFO L225 Difference]: With dead ends: 36 [2024-11-13 13:34:57,947 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:34:57,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:34:57,948 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:57,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:34:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:34:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 13:34:57,959 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 13:34:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 13:34:57,962 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2024-11-13 13:34:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:57,962 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 13:34:57,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 13:34:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:34:57,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:57,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:57,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:34:58,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:58,164 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:58,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1576478087, now seen corresponding path program 1 times [2024-11-13 13:34:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:34:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274591450] [2024-11-13 13:34:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:58,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:34:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:58,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:34:58,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:59,197 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 13:34:59,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:35:00,376 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 13:35:00,376 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:35:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274591450] [2024-11-13 13:35:00,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274591450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:35:00,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:35:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-11-13 13:35:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103555172] [2024-11-13 13:35:00,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:35:00,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:35:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:35:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:35:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:35:00,379 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 13:35:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:35:02,560 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-13 13:35:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:35:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 13:35:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:35:02,562 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:35:02,562 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 13:35:02,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:35:02,564 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:35:02,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 227 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 13:35:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 13:35:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-13 13:35:02,570 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 13:35:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-13 13:35:02,571 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2024-11-13 13:35:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:35:02,572 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-13 13:35:02,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 13:35:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-13 13:35:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:35:02,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:35:02,573 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 13:35:02,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:35:02,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:35:02,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:35:02,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:35:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -17555527, now seen corresponding path program 1 times [2024-11-13 13:35:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:35:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100142159] [2024-11-13 13:35:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:35:02,777 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 13:35:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:35:02,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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 13:35:02,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_885715b4-06c2-4c57-a248-0e443d416b32/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 (5)] Waiting until timeout for monitored process