./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 129eb72cba2ec6662c92062b72f302d538a3dfe4c41c05f2b8937451c2edd34a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:38:55,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:38:55,476 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:38:55,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:38:55,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:38:55,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:38:55,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:38:55,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:38:55,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:38:55,524 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:38:55,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:38:55,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:38:55,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:38:55,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:38:55,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:38:55,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:38:55,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:38:55,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:38:55,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:38:55,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:38:55,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:38:55,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:38:55,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:38:55,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:38:55,536 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:38:55,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:38:55,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:38:55,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:38:55,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:38:55,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:38:55,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:38:55,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:38:55,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:38:55,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:38:55,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:38:55,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:38:55,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:38:55,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:38:55,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:38:55,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:38:55,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:38:55,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:38:55,557 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_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 129eb72cba2ec6662c92062b72f302d538a3dfe4c41c05f2b8937451c2edd34a [2023-11-23 22:38:55,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:38:55,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:38:55,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:38:55,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:38:55,974 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:38:55,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i [2023-11-23 22:38:59,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:38:59,505 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:38:59,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i [2023-11-23 22:38:59,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/data/3b73b5cb7/80b05070eedf4b97abfd84993cbdf254/FLAG253ee1abb [2023-11-23 22:38:59,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/data/3b73b5cb7/80b05070eedf4b97abfd84993cbdf254 [2023-11-23 22:38:59,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:38:59,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:38:59,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:38:59,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:38:59,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:38:59,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:59" (1/1) ... [2023-11-23 22:38:59,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1693b3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:59, skipping insertion in model container [2023-11-23 22:38:59,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:59" (1/1) ... [2023-11-23 22:38:59,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:38:59,844 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_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i[916,929] [2023-11-23 22:39:00,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:00,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:39:00,057 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_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-57.i[916,929] [2023-11-23 22:39:00,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:00,160 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:39:00,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00 WrapperNode [2023-11-23 22:39:00,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:00,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:00,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:39:00,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:39:00,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,282 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 267 [2023-11-23 22:39:00,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:00,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:39:00,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:39:00,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:39:00,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,307 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,360 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:39:00,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:39:00,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:39:00,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:39:00,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:39:00,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (1/1) ... [2023-11-23 22:39:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:00,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:00,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:39:00,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:39:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:39:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:39:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:39:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:39:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:39:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:39:00,665 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:39:00,670 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:39:01,369 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:39:01,427 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:39:01,427 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:39:01,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:01 BoogieIcfgContainer [2023-11-23 22:39:01,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:39:01,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:39:01,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:39:01,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:39:01,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:38:59" (1/3) ... [2023-11-23 22:39:01,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13827686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:01, skipping insertion in model container [2023-11-23 22:39:01,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:00" (2/3) ... [2023-11-23 22:39:01,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13827686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:01, skipping insertion in model container [2023-11-23 22:39:01,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:01" (3/3) ... [2023-11-23 22:39:01,441 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-57.i [2023-11-23 22:39:01,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:39:01,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:39:01,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:39:01,550 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61ecd9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:39:01,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:39:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 22:39:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-23 22:39:01,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:01,580 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:01,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:01,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1935959326, now seen corresponding path program 1 times [2023-11-23 22:39:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010204280] [2023-11-23 22:39:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010204280] [2023-11-23 22:39:01,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 22:39:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340313644] [2023-11-23 22:39:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:01,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:01,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:39:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 22:39:02,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-11-23 22:39:02,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340313644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:02,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274751207] [2023-11-23 22:39:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:02,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:39:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:39:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:39:02,409 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-23 22:39:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:02,502 INFO L93 Difference]: Finished difference Result 205 states and 373 transitions. [2023-11-23 22:39:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:39:02,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 223 [2023-11-23 22:39:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:02,517 INFO L225 Difference]: With dead ends: 205 [2023-11-23 22:39:02,517 INFO L226 Difference]: Without dead ends: 101 [2023-11-23 22:39:02,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:39:02,532 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:39:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-23 22:39:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-23 22:39:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 22:39:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 164 transitions. [2023-11-23 22:39:02,614 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 164 transitions. Word has length 223 [2023-11-23 22:39:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:02,614 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 164 transitions. [2023-11-23 22:39:02,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-23 22:39:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 164 transitions. [2023-11-23 22:39:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-23 22:39:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:02,625 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:02,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 22:39:02,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:02,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:02,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash -796843670, now seen corresponding path program 1 times [2023-11-23 22:39:02,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:02,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627421809] [2023-11-23 22:39:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:02,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:02,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010708895] [2023-11-23 22:39:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:02,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:02,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:02,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:39:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:03,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:03,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 915 proven. 81 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-11-23 22:39:03,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-23 22:39:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627421809] [2023-11-23 22:39:03,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:39:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010708895] [2023-11-23 22:39:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010708895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:03,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:39:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-23 22:39:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756922327] [2023-11-23 22:39:03,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:03,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:03,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:03,891 INFO L87 Difference]: Start difference. First operand 101 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-23 22:39:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:04,295 INFO L93 Difference]: Finished difference Result 222 states and 355 transitions. [2023-11-23 22:39:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:39:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 223 [2023-11-23 22:39:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:04,300 INFO L225 Difference]: With dead ends: 222 [2023-11-23 22:39:04,300 INFO L226 Difference]: Without dead ends: 122 [2023-11-23 22:39:04,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:04,303 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 127 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:04,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 302 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:39:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-23 22:39:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2023-11-23 22:39:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-23 22:39:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2023-11-23 22:39:04,330 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 223 [2023-11-23 22:39:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:04,332 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2023-11-23 22:39:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-23 22:39:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2023-11-23 22:39:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-23 22:39:04,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:04,337 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:04,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:04,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:04,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:04,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2138768583, now seen corresponding path program 1 times [2023-11-23 22:39:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311115828] [2023-11-23 22:39:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:04,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989185022] [2023-11-23 22:39:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:04,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:04,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:04,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:04,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:39:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:04,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1253 proven. 42 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-23 22:39:05,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-23 22:39:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311115828] [2023-11-23 22:39:05,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:39:05,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989185022] [2023-11-23 22:39:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989185022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:05,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:39:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 22:39:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577345300] [2023-11-23 22:39:05,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:39:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:39:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:39:05,371 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-23 22:39:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:05,704 INFO L93 Difference]: Finished difference Result 229 states and 356 transitions. [2023-11-23 22:39:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:39:05,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 224 [2023-11-23 22:39:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:05,716 INFO L225 Difference]: With dead ends: 229 [2023-11-23 22:39:05,716 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 22:39:05,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:39:05,722 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 145 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:05,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 255 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 22:39:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-11-23 22:39:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 74 states have internal predecessors, (98), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-23 22:39:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 186 transitions. [2023-11-23 22:39:05,770 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 186 transitions. Word has length 224 [2023-11-23 22:39:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:05,772 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 186 transitions. [2023-11-23 22:39:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-23 22:39:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 186 transitions. [2023-11-23 22:39:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-23 22:39:05,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:05,781 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:05,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:06,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1791906400, now seen corresponding path program 1 times [2023-11-23 22:39:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:06,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487026492] [2023-11-23 22:39:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:06,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561039022] [2023-11-23 22:39:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:06,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:06,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:06,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:06,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:39:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:39:06,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1526 proven. 108 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-11-23 22:39:07,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 57 proven. 48 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-23 22:39:08,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487026492] [2023-11-23 22:39:08,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:39:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561039022] [2023-11-23 22:39:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561039022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:08,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:39:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2023-11-23 22:39:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036922908] [2023-11-23 22:39:08,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 22:39:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 22:39:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:39:08,906 INFO L87 Difference]: Start difference. First operand 121 states and 186 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-11-23 22:39:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:13,317 INFO L93 Difference]: Finished difference Result 794 states and 1159 transitions. [2023-11-23 22:39:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 22:39:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) Word has length 225 [2023-11-23 22:39:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:13,326 INFO L225 Difference]: With dead ends: 794 [2023-11-23 22:39:13,326 INFO L226 Difference]: Without dead ends: 686 [2023-11-23 22:39:13,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=798, Invalid=2282, Unknown=0, NotChecked=0, Total=3080 [2023-11-23 22:39:13,335 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1090 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:13,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1346 Invalid, 2315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [582 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 22:39:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-23 22:39:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 446. [2023-11-23 22:39:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 280 states have (on average 1.2964285714285715) internal successors, (363), 283 states have internal predecessors, (363), 147 states have call successors, (147), 18 states have call predecessors, (147), 18 states have return successors, (147), 144 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-23 22:39:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 657 transitions. [2023-11-23 22:39:13,518 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 657 transitions. Word has length 225 [2023-11-23 22:39:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:13,519 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 657 transitions. [2023-11-23 22:39:13,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-11-23 22:39:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 657 transitions. [2023-11-23 22:39:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-23 22:39:13,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:13,523 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:13,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:13,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:13,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1354082906, now seen corresponding path program 1 times [2023-11-23 22:39:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:13,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199023272] [2023-11-23 22:39:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:13,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:13,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:13,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122047473] [2023-11-23 22:39:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:13,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:13,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:39:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:14,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:39:14,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 833 proven. 84 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2023-11-23 22:39:14,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-11-23 22:39:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:14,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199023272] [2023-11-23 22:39:14,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:39:14,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122047473] [2023-11-23 22:39:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122047473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:14,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:39:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 22:39:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766826855] [2023-11-23 22:39:14,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:14,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:39:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:39:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:39:14,720 INFO L87 Difference]: Start difference. First operand 446 states and 657 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-23 22:39:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:15,860 INFO L93 Difference]: Finished difference Result 1524 states and 2183 transitions. [2023-11-23 22:39:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 22:39:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 225 [2023-11-23 22:39:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:15,874 INFO L225 Difference]: With dead ends: 1524 [2023-11-23 22:39:15,874 INFO L226 Difference]: Without dead ends: 1221 [2023-11-23 22:39:15,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-11-23 22:39:15,877 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 428 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:15,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 686 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:39:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-11-23 22:39:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 787. [2023-11-23 22:39:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 503 states have (on average 1.2823061630218688) internal successors, (645), 508 states have internal predecessors, (645), 245 states have call successors, (245), 38 states have call predecessors, (245), 38 states have return successors, (245), 240 states have call predecessors, (245), 245 states have call successors, (245) [2023-11-23 22:39:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1135 transitions. [2023-11-23 22:39:16,062 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1135 transitions. Word has length 225 [2023-11-23 22:39:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:16,063 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1135 transitions. [2023-11-23 22:39:16,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-23 22:39:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1135 transitions. [2023-11-23 22:39:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 22:39:16,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:16,068 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:16,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:16,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:16,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:16,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1012441622, now seen corresponding path program 1 times [2023-11-23 22:39:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334889188] [2023-11-23 22:39:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:16,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:16,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823794128] [2023-11-23 22:39:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:16,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:16,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:39:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:16,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:39:16,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-23 22:39:16,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:16,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334889188] [2023-11-23 22:39:16,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:39:16,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823794128] [2023-11-23 22:39:16,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823794128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:16,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847591603] [2023-11-23 22:39:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:16,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:16,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:16,831 INFO L87 Difference]: Start difference. First operand 787 states and 1135 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-23 22:39:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:17,121 INFO L93 Difference]: Finished difference Result 2112 states and 3057 transitions. [2023-11-23 22:39:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-11-23 22:39:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:17,136 INFO L225 Difference]: With dead ends: 2112 [2023-11-23 22:39:17,136 INFO L226 Difference]: Without dead ends: 1427 [2023-11-23 22:39:17,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:17,140 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 47 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:17,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 298 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:39:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-11-23 22:39:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1392. [2023-11-23 22:39:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 883 states have (on average 1.2684031710079275) internal successors, (1120), 892 states have internal predecessors, (1120), 441 states have call successors, (441), 67 states have call predecessors, (441), 67 states have return successors, (441), 432 states have call predecessors, (441), 441 states have call successors, (441) [2023-11-23 22:39:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2002 transitions. [2023-11-23 22:39:17,451 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2002 transitions. Word has length 226 [2023-11-23 22:39:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:17,452 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 2002 transitions. [2023-11-23 22:39:17,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-11-23 22:39:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2002 transitions. [2023-11-23 22:39:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 22:39:17,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:17,456 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:17,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:17,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:17,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -516952230, now seen corresponding path program 1 times [2023-11-23 22:39:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974734275] [2023-11-23 22:39:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:17,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:39:17,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317611699] [2023-11-23 22:39:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:17,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:17,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:17,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8737ff0-b84a-45fd-b223-ba0ebaaa1f59/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:39:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:17,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 22:39:17,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1597 proven. 255 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-11-23 22:39:44,201 INFO L327 TraceCheckSpWp]: Computing backward predicates...