./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 71c49c4d50bf5964bc64c132ffffad0ac21b09eceea3ddcffdb7bfa5d4628635 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:34:43,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:34:43,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:34:43,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:34:43,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:34:43,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:34:43,476 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:34:43,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:34:43,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:34:43,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:34:43,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:34:43,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:34:43,485 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:34:43,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:34:43,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:34:43,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:34:43,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:34:43,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:34:43,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:34:43,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:34:43,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:34:43,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:34:43,492 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:34:43,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:34:43,493 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:34:43,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:34:43,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:34:43,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:34:43,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:43,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:34:43,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:34:43,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:34:43,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:34:43,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:34:43,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:34:43,499 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:34:43,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:34:43,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:34:43,500 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:34:43,500 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c49c4d50bf5964bc64c132ffffad0ac21b09eceea3ddcffdb7bfa5d4628635 [2023-11-06 22:34:43,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:34:43,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:34:43,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:34:43,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:34:43,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:34:43,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/gcd_4+newton_2_2.i [2023-11-06 22:34:46,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:34:47,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:34:47,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i [2023-11-06 22:34:47,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/308dd8dee/65590bfa048b465e9b45b9493987265a/FLAGe29b9a507 [2023-11-06 22:34:47,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/308dd8dee/65590bfa048b465e9b45b9493987265a [2023-11-06 22:34:47,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:34:47,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:34:47,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:47,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:34:47,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:34:47,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1797a023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47, skipping insertion in model container [2023-11-06 22:34:47,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:34:47,374 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[1224,1237] [2023-11-06 22:34:47,400 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[2827,2840] [2023-11-06 22:34:47,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:47,411 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:34:47,425 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[1224,1237] [2023-11-06 22:34:47,437 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[2827,2840] [2023-11-06 22:34:47,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:47,453 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:34:47,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47 WrapperNode [2023-11-06 22:34:47,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:47,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:47,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:34:47,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:34:47,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,491 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 81 [2023-11-06 22:34:47,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:47,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:34:47,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:34:47,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:34:47,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:34:47,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:34:47,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:34:47,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:34:47,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (1/1) ... [2023-11-06 22:34:47,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:34:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:34:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-06 22:34:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-06 22:34:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-06 22:34:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-06 22:34:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:34:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:34:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:34:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:34:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:34:47,730 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:34:47,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:34:48,028 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:34:48,035 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:34:48,036 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:34:48,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:48 BoogieIcfgContainer [2023-11-06 22:34:48,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:34:48,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:34:48,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:34:48,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:34:48,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:34:47" (1/3) ... [2023-11-06 22:34:48,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7489cfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:48, skipping insertion in model container [2023-11-06 22:34:48,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:47" (2/3) ... [2023-11-06 22:34:48,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7489cfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:48, skipping insertion in model container [2023-11-06 22:34:48,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:48" (3/3) ... [2023-11-06 22:34:48,052 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_2.i [2023-11-06 22:34:48,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:34:48,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:34:48,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:34:48,121 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3dfd5d29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:34:48,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:34:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:34:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:34:48,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:48,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:48,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2023-11-06 22:34:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:48,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124021197] [2023-11-06 22:34:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124021197] [2023-11-06 22:34:48,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:34:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605842168] [2023-11-06 22:34:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:48,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:48,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:34:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:34:48,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:48,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:48,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605842168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:48,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:48,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026277380] [2023-11-06 22:34:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:48,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:48,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:48,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:48,569 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:48,615 INFO L93 Difference]: Finished difference Result 83 states and 111 transitions. [2023-11-06 22:34:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:48,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 22:34:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:48,630 INFO L225 Difference]: With dead ends: 83 [2023-11-06 22:34:48,630 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 22:34:48,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:48,638 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:48,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:34:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 22:34:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-11-06 22:34:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:34:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-11-06 22:34:48,686 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 11 [2023-11-06 22:34:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:48,687 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-11-06 22:34:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-11-06 22:34:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:34:48,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:48,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:48,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:34:48,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:48,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:48,895 INFO L85 PathProgramCache]: Analyzing trace with hash -5472198, now seen corresponding path program 1 times [2023-11-06 22:34:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:48,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667143478] [2023-11-06 22:34:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667143478] [2023-11-06 22:34:48,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:34:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314130594] [2023-11-06 22:34:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:48,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:48,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:34:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:49,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:34:49,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:49,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314130594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:49,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:49,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191943235] [2023-11-06 22:34:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:49,053 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:49,078 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2023-11-06 22:34:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:49,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 22:34:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:49,080 INFO L225 Difference]: With dead ends: 61 [2023-11-06 22:34:49,081 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 22:34:49,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:49,083 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:34:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 22:34:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2023-11-06 22:34:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:34:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-06 22:34:49,102 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 11 [2023-11-06 22:34:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:49,102 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-06 22:34:49,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-06 22:34:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:34:49,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:49,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:49,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:34:49,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:49,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2023-11-06 22:34:49,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815743475] [2023-11-06 22:34:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:49,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283234442] [2023-11-06 22:34:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:49,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:34:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:49,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:34:49,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815743475] [2023-11-06 22:34:49,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283234442] [2023-11-06 22:34:49,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283234442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:49,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:49,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397460720] [2023-11-06 22:34:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:49,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:49,486 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:49,508 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2023-11-06 22:34:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 22:34:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:49,510 INFO L225 Difference]: With dead ends: 53 [2023-11-06 22:34:49,510 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 22:34:49,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:49,512 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 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 [2023-11-06 22:34:49,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:34:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 22:34:49,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-06 22:34:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:34:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-11-06 22:34:49,522 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2023-11-06 22:34:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:49,522 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-11-06 22:34:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-11-06 22:34:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:34:49,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:49,523 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:49,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:34:49,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:49,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:49,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2023-11-06 22:34:49,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614585586] [2023-11-06 22:34:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:49,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795840151] [2023-11-06 22:34:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:49,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:34:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:49,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:49,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:50,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614585586] [2023-11-06 22:34:50,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795840151] [2023-11-06 22:34:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795840151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:50,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:34:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138173622] [2023-11-06 22:34:50,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:50,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:34:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:34:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:34:50,046 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:50,119 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2023-11-06 22:34:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-06 22:34:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:50,125 INFO L225 Difference]: With dead ends: 57 [2023-11-06 22:34:50,125 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 22:34:50,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:34:50,127 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:50,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 98 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:34:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 22:34:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 22:34:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:34:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-06 22:34:50,149 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2023-11-06 22:34:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:50,150 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-06 22:34:50,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-06 22:34:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 22:34:50,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:50,151 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:50,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:50,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:50,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2023-11-06 22:34:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726209228] [2023-11-06 22:34:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:50,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:50,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740072476] [2023-11-06 22:34:50,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:34:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:34:50,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:34:50,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:50,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:50,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:50,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:50,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726209228] [2023-11-06 22:34:50,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740072476] [2023-11-06 22:34:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740072476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:50,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:34:50,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:34:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719409765] [2023-11-06 22:34:50,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:34:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:34:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:34:50,706 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:50,837 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-11-06 22:34:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:34:50,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-06 22:34:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:50,839 INFO L225 Difference]: With dead ends: 65 [2023-11-06 22:34:50,839 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 22:34:50,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:34:50,849 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:50,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 254 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:34:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 22:34:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 22:34:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:34:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-11-06 22:34:50,872 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 21 [2023-11-06 22:34:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:50,873 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-11-06 22:34:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-11-06 22:34:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:34:50,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:50,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:50,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:51,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:51,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:51,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2023-11-06 22:34:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095455342] [2023-11-06 22:34:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:51,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:51,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:51,132 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:34:51,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-06 22:34:51,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-06 22:34:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:34:51,139 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-06 22:34:51,143 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:34:51,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:34:51 BoogieIcfgContainer [2023-11-06 22:34:51,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:34:51,171 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:34:51,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:34:51,172 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:34:51,172 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:48" (3/4) ... [2023-11-06 22:34:51,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:34:51,175 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:34:51,176 INFO L158 Benchmark]: Toolchain (without parser) took 4023.41ms. Allocated memory is still 148.9MB. Free memory was 105.8MB in the beginning and 76.2MB in the end (delta: 29.6MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2023-11-06 22:34:51,176 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:34:51,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.99ms. Allocated memory is still 148.9MB. Free memory was 105.3MB in the beginning and 94.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:34:51,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.81ms. Allocated memory is still 148.9MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:34:51,177 INFO L158 Benchmark]: Boogie Preprocessor took 30.24ms. Allocated memory is still 148.9MB. Free memory was 92.0MB in the beginning and 90.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:34:51,178 INFO L158 Benchmark]: RCFGBuilder took 514.88ms. Allocated memory is still 148.9MB. Free memory was 90.6MB in the beginning and 78.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:34:51,178 INFO L158 Benchmark]: TraceAbstraction took 3130.00ms. Allocated memory is still 148.9MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2023-11-06 22:34:51,179 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 148.9MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:34:51,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.99ms. Allocated memory is still 148.9MB. Free memory was 105.3MB in the beginning and 94.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.81ms. Allocated memory is still 148.9MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.24ms. Allocated memory is still 148.9MB. Free memory was 92.0MB in the beginning and 90.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 514.88ms. Allocated memory is still 148.9MB. Free memory was 90.6MB in the beginning and 78.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3130.00ms. Allocated memory is still 148.9MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 148.9MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L100] CALL, EXPR f(IN) VAL [\old(x)=113] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR f(IN) VAL [IN=113, f(IN)=110] [L100] CALL, EXPR fp(IN) VAL [\old(x)=113] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR fp(IN) VAL [IN=113, f(IN)=110, fp(IN)=109] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR f(x) VAL [IN=113, f(x)=114, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR fp(x) VAL [IN=113, f(x)=114, fp(x)=112, x=111] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=113] [L109] reach_error() VAL [IN=113] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 574 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 385 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 189 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 17 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:34:51,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 71c49c4d50bf5964bc64c132ffffad0ac21b09eceea3ddcffdb7bfa5d4628635 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:34:53,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:34:53,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:34:53,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:34:53,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:34:53,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:34:53,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:34:53,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:34:53,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:34:53,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:34:53,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:34:53,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:34:53,989 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:34:53,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:34:53,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:34:53,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:34:53,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:34:53,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:34:53,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:34:53,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:34:53,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:34:53,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:34:53,995 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:34:53,995 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:34:53,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:34:53,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:34:53,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:34:53,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:34:53,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:34:53,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:34:53,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:53,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:34:54,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:34:54,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:34:54,000 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:34:54,000 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:34:54,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:34:54,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:34:54,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:34:54,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:34:54,002 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:34:54,002 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:34:54,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c49c4d50bf5964bc64c132ffffad0ac21b09eceea3ddcffdb7bfa5d4628635 [2023-11-06 22:34:54,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:34:54,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:34:54,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:34:54,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:34:54,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:34:54,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/gcd_4+newton_2_2.i [2023-11-06 22:34:57,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:34:58,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:34:58,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i [2023-11-06 22:34:58,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/7d9437e8e/d644527d8fe543f0ab5fb26666436741/FLAGd764fd72d [2023-11-06 22:34:58,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/data/7d9437e8e/d644527d8fe543f0ab5fb26666436741 [2023-11-06 22:34:58,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:34:58,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:34:58,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:58,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:34:58,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:34:58,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c550362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58, skipping insertion in model container [2023-11-06 22:34:58,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:34:58,338 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[1224,1237] [2023-11-06 22:34:58,387 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[2827,2840] [2023-11-06 22:34:58,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:58,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:34:58,432 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[1224,1237] [2023-11-06 22:34:58,460 WARN L240 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_0138dc04-c84a-4431-b502-91bf205bdfdd/sv-benchmarks/c/combinations/gcd_4+newton_2_2.i[2827,2840] [2023-11-06 22:34:58,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:58,478 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:34:58,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58 WrapperNode [2023-11-06 22:34:58,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:58,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:58,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:34:58,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:34:58,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,548 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 78 [2023-11-06 22:34:58,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:58,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:34:58,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:34:58,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:34:58,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:34:58,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:34:58,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:34:58,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:34:58,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (1/1) ... [2023-11-06 22:34:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:58,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-06 22:34:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-06 22:34:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-06 22:34:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-06 22:34:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:34:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:34:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:34:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:34:58,780 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:34:58,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:35:07,843 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:35:07,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:35:07,851 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:35:07,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:07 BoogieIcfgContainer [2023-11-06 22:35:07,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:35:07,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:35:07,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:35:07,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:35:07,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:34:58" (1/3) ... [2023-11-06 22:35:07,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5b1276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:07, skipping insertion in model container [2023-11-06 22:35:07,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:58" (2/3) ... [2023-11-06 22:35:07,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5b1276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:07, skipping insertion in model container [2023-11-06 22:35:07,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:07" (3/3) ... [2023-11-06 22:35:07,864 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_2.i [2023-11-06 22:35:07,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:35:07,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:35:07,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:35:07,934 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@54dec48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:35:07,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:35:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:35:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:35:07,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:07,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:07,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:07,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2023-11-06 22:35:07,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:07,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401930232] [2023-11-06 22:35:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:07,972 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 [2023-11-06 22:35:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:07,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:08,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (2)] Waiting until timeout for monitored process [2023-11-06 22:35:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:08,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:35:08,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:08,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:35:08,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:08,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401930232] [2023-11-06 22:35:08,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401930232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:08,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:08,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:35:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723545314] [2023-11-06 22:35:08,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:35:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:35:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:08,233 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:08,352 INFO L93 Difference]: Finished difference Result 85 states and 114 transitions. [2023-11-06 22:35:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:35:08,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 22:35:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:08,363 INFO L225 Difference]: With dead ends: 85 [2023-11-06 22:35:08,363 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 22:35:08,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:08,375 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:08,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:35:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 22:35:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-11-06 22:35:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:35:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2023-11-06 22:35:08,416 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2023-11-06 22:35:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:08,416 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2023-11-06 22:35:08,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2023-11-06 22:35:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:35:08,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:08,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:08,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (2)] Ended with exit code 0 [2023-11-06 22:35:08,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:08,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:08,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash 413626440, now seen corresponding path program 1 times [2023-11-06 22:35:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:08,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860385172] [2023-11-06 22:35:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:08,628 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 [2023-11-06 22:35:08,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:08,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:08,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (3)] Waiting until timeout for monitored process [2023-11-06 22:35:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:08,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:35:08,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:08,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:35:08,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860385172] [2023-11-06 22:35:08,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860385172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:08,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:08,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:35:08,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823544108] [2023-11-06 22:35:08,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:35:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:35:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:08,870 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:08,953 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-11-06 22:35:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:35:08,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:35:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:08,957 INFO L225 Difference]: With dead ends: 52 [2023-11-06 22:35:08,957 INFO L226 Difference]: Without dead ends: 38 [2023-11-06 22:35:08,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:08,959 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:08,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:35:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-06 22:35:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-06 22:35:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:35:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-06 22:35:08,970 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 13 [2023-11-06 22:35:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:08,970 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-06 22:35:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-06 22:35:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:35:08,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:08,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:08,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:09,177 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:09,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2023-11-06 22:35:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:09,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696997917] [2023-11-06 22:35:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:09,179 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 [2023-11-06 22:35:09,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:09,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (4)] Waiting until timeout for monitored process [2023-11-06 22:35:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:09,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:35:09,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:09,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:35:09,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696997917] [2023-11-06 22:35:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696997917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:09,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:35:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397841694] [2023-11-06 22:35:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:35:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:35:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:09,513 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:09,609 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2023-11-06 22:35:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:35:09,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 22:35:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:09,613 INFO L225 Difference]: With dead ends: 53 [2023-11-06 22:35:09,613 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 22:35:09,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:09,615 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 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 [2023-11-06 22:35:09,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:35:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 22:35:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-06 22:35:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:35:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-11-06 22:35:09,634 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2023-11-06 22:35:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:09,635 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-11-06 22:35:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-11-06 22:35:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:35:09,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:09,636 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:09,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:09,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:09,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:09,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2023-11-06 22:35:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480473323] [2023-11-06 22:35:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:09,842 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 [2023-11-06 22:35:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:09,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:09,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:35:09,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:10,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:10,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480473323] [2023-11-06 22:35:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480473323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:10,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:35:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980980991] [2023-11-06 22:35:10,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:10,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:35:10,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:35:10,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:35:10,496 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:10,722 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2023-11-06 22:35:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:35:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-06 22:35:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:10,725 INFO L225 Difference]: With dead ends: 57 [2023-11-06 22:35:10,725 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 22:35:10,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:35:10,727 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:10,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:35:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 22:35:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 22:35:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:35:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-06 22:35:10,736 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2023-11-06 22:35:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:10,737 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-06 22:35:10,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-06 22:35:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 22:35:10,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:10,738 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:10,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:10,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:10,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:10,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2023-11-06 22:35:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680550587] [2023-11-06 22:35:10,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:35:10,955 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 [2023-11-06 22:35:10,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:10,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:35:11,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:35:11,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:35:11,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:11,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:35:12,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:35:19,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:35:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680550587] [2023-11-06 22:35:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680550587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:19,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:35:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-06 22:35:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700166638] [2023-11-06 22:35:19,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:19,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:35:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:35:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:35:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:35:19,583 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:41,582 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:35:54,909 WARN L293 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:35:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:58,841 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2023-11-06 22:35:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:35:58,852 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-06 22:35:58,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:35:58,854 INFO L225 Difference]: With dead ends: 68 [2023-11-06 22:35:58,854 INFO L226 Difference]: Without dead ends: 65 [2023-11-06 22:35:58,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:35:58,857 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:35:58,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 339 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:35:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-06 22:35:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-11-06 22:35:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 22:35:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2023-11-06 22:35:58,892 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 21 [2023-11-06 22:35:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:35:58,893 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2023-11-06 22:35:58,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2023-11-06 22:35:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:35:58,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:35:58,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:58,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:59,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:35:59,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:35:59,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2023-11-06 22:35:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:35:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374094087] [2023-11-06 22:35:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:59,112 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 [2023-11-06 22:35:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:35:59,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:35:59,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0138dc04-c84a-4431-b502-91bf205bdfdd/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process