./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx --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 b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:26,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:26,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:00:26,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:26,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:26,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:26,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:26,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:26,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:26,567 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:26,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:26,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:26,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:26,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:26,570 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:26,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:26,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:00:26,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:00:26,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:26,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:00:26,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:26,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:00:26,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:26,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:00:26,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:00:26,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:26,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:26,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:26,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:26,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:26,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:26,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:26,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:26,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:26,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:00:26,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:26,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:00:26,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:26,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:26,584 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:00:26,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:26,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:26,587 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_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 [2023-11-21 21:00:26,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:26,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:26,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:26,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:26,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:26,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2023-11-21 21:00:30,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:30,288 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:30,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2023-11-21 21:00:30,297 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/data/0319638ec/3ad3d1071ffe43fa8f31d913fe1054df/FLAG033742eee [2023-11-21 21:00:30,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/data/0319638ec/3ad3d1071ffe43fa8f31d913fe1054df [2023-11-21 21:00:30,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:30,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:30,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:30,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:30,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:30,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76daa79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30, skipping insertion in model container [2023-11-21 21:00:30,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:30,560 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_0260056b-4ac6-42f4-850d-84eb533d4149/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2023-11-21 21:00:30,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:30,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:30,619 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_0260056b-4ac6-42f4-850d-84eb533d4149/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2023-11-21 21:00:30,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:30,657 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:30,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30 WrapperNode [2023-11-21 21:00:30,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:30,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:30,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:30,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:30,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,701 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-11-21 21:00:30,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:30,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:30,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:30,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:30,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,729 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,746 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 21:00:30,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:30,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:30,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:30,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:30,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (1/1) ... [2023-11-21 21:00:30,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:30,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:30,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:30,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:30,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:00:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:30,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:30,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 21:00:30,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 21:00:30,900 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:30,902 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:31,034 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:31,081 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:31,081 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:00:31,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:31 BoogieIcfgContainer [2023-11-21 21:00:31,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:31,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:31,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:31,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:31,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:30" (1/3) ... [2023-11-21 21:00:31,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1406aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:31, skipping insertion in model container [2023-11-21 21:00:31,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:30" (2/3) ... [2023-11-21 21:00:31,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1406aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:31, skipping insertion in model container [2023-11-21 21:00:31,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:31" (3/3) ... [2023-11-21 21:00:31,127 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound5.c [2023-11-21 21:00:31,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:31,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:00:31,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:31,233 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;@27432e12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:31,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:00:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:00:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:00:31,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:31,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:00:31,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:31,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1757604175, now seen corresponding path program 1 times [2023-11-21 21:00:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:31,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646774490] [2023-11-21 21:00:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:31,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134370001] [2023-11-21 21:00:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:31,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:31,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:31,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:00:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:31,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:00:31,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:31,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:31,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646774490] [2023-11-21 21:00:31,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134370001] [2023-11-21 21:00:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134370001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:31,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:31,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235946301] [2023-11-21 21:00:31,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:31,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:31,719 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:00:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:31,841 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2023-11-21 21:00:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:31,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-11-21 21:00:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:31,866 INFO L225 Difference]: With dead ends: 37 [2023-11-21 21:00:31,866 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 21:00:31,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:31,875 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:31,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:00:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 21:00:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 21:00:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:00:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-21 21:00:31,917 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2023-11-21 21:00:31,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:31,918 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-21 21:00:31,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:00:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-21 21:00:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 21:00:31,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:31,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:31,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:32,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 21:00:32,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:32,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -19935186, now seen corresponding path program 1 times [2023-11-21 21:00:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391128062] [2023-11-21 21:00:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:32,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:32,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619670451] [2023-11-21 21:00:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:32,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:32,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:00:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:32,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 21:00:32,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:32,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:00:32,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391128062] [2023-11-21 21:00:32,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619670451] [2023-11-21 21:00:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619670451] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:32,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-21 21:00:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664978902] [2023-11-21 21:00:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:32,471 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:32,530 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2023-11-21 21:00:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:32,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-21 21:00:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:32,533 INFO L225 Difference]: With dead ends: 25 [2023-11-21 21:00:32,534 INFO L226 Difference]: Without dead ends: 20 [2023-11-21 21:00:32,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:00:32,538 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:32,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:00:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-21 21:00:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-21 21:00:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 21:00:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-11-21 21:00:32,554 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2023-11-21 21:00:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:32,556 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-11-21 21:00:32,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:32,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-11-21 21:00:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 21:00:32,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:32,563 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:32,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:32,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:32,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1489129899, now seen corresponding path program 1 times [2023-11-21 21:00:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319231913] [2023-11-21 21:00:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:32,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:32,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356244292] [2023-11-21 21:00:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:32,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:32,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:00:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:32,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 21:00:32,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:00:33,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:00:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319231913] [2023-11-21 21:00:33,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356244292] [2023-11-21 21:00:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356244292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:33,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:00:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-11-21 21:00:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210522926] [2023-11-21 21:00:33,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 21:00:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 21:00:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:00:33,440 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 21:00:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:33,750 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-11-21 21:00:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:00:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-11-21 21:00:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:33,752 INFO L225 Difference]: With dead ends: 40 [2023-11-21 21:00:33,752 INFO L226 Difference]: Without dead ends: 33 [2023-11-21 21:00:33,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-11-21 21:00:33,754 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:33,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:00:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-21 21:00:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-21 21:00:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 21:00:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-11-21 21:00:33,772 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2023-11-21 21:00:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:33,773 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-11-21 21:00:33,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 21:00:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-11-21 21:00:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 21:00:33,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:33,775 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-11-21 21:00:33,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:33,992 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:00:33,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1968307026, now seen corresponding path program 2 times [2023-11-21 21:00:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38561139] [2023-11-21 21:00:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:34,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:00:34,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455496896] [2023-11-21 21:00:34,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:00:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:34,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:34,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:00:34,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:00:34,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:00:34,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-21 21:00:34,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-21 21:00:34,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-21 21:00:34,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38561139] [2023-11-21 21:00:34,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:00:34,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455496896] [2023-11-21 21:00:34,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455496896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:34,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:00:34,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-11-21 21:00:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326235472] [2023-11-21 21:00:34,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:34,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 21:00:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 21:00:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-21 21:00:34,707 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-21 21:00:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:35,184 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-11-21 21:00:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:00:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 40 [2023-11-21 21:00:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:35,185 INFO L225 Difference]: With dead ends: 37 [2023-11-21 21:00:35,185 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 21:00:35,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2023-11-21 21:00:35,187 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 121 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 21:00:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 21:00:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 21:00:35,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-11-21 21:00:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 21:00:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-21 21:00:35,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 21:00:35,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 21:00:35,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 21:00:35,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:35,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:35,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 21:00:35,676 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 21:00:35,677 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ |ULTIMATE.start_main_~y~0#1| .cse0) (+ |ULTIMATE.start_main_~c~0#1| .cse1)) (= (+ (* 2 |ULTIMATE.start_main_~c~0#1|) .cse1) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0)) (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (* |ULTIMATE.start_main_~x~0#1| 4)))) [2023-11-21 21:00:35,678 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (* |ULTIMATE.start_main_~x~0#1| 4)))) [2023-11-21 21:00:35,678 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 21:00:35,678 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-11-21 21:00:35,678 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ |ULTIMATE.start_main_~y~0#1| .cse0) (+ |ULTIMATE.start_main_~c~0#1| .cse1)) (= (+ (* 2 |ULTIMATE.start_main_~c~0#1|) .cse1) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0)) (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (* |ULTIMATE.start_main_~x~0#1| 4)))) [2023-11-21 21:00:35,678 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-11-21 21:00:35,679 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)) [2023-11-21 21:00:35,679 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-11-21 21:00:35,679 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-11-21 21:00:35,679 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-11-21 21:00:35,679 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-11-21 21:00:35,679 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-11-21 21:00:35,680 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-11-21 21:00:35,683 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-21 21:00:35,685 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:00:35,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:00:35 BoogieIcfgContainer [2023-11-21 21:00:35,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:00:35,704 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:35,704 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:35,704 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:35,705 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:31" (3/4) ... [2023-11-21 21:00:35,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 21:00:35,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-21 21:00:35,722 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-21 21:00:35,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 21:00:35,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 21:00:35,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 21:00:35,819 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:00:35,819 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 21:00:35,820 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:35,820 INFO L158 Benchmark]: Toolchain (without parser) took 5501.07ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 90.8MB in the beginning and 69.1MB in the end (delta: 21.7MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,821 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:35,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.25ms. Allocated memory is still 136.3MB. Free memory was 90.4MB in the beginning and 79.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.07ms. Allocated memory is still 136.3MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,822 INFO L158 Benchmark]: Boogie Preprocessor took 53.94ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,822 INFO L158 Benchmark]: RCFGBuilder took 325.97ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 65.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,822 INFO L158 Benchmark]: TraceAbstraction took 4592.67ms. Allocated memory is still 163.6MB. Free memory was 133.2MB in the beginning and 73.3MB in the end (delta: 59.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,823 INFO L158 Benchmark]: Witness Printer took 115.55ms. Allocated memory is still 163.6MB. Free memory was 73.3MB in the beginning and 69.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:35,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.25ms. Allocated memory is still 136.3MB. Free memory was 90.4MB in the beginning and 79.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.07ms. Allocated memory is still 136.3MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.94ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.97ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 65.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4592.67ms. Allocated memory is still 163.6MB. Free memory was 133.2MB in the beginning and 73.3MB in the end (delta: 59.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Witness Printer took 115.55ms. Allocated memory is still 163.6MB. Free memory was 73.3MB in the beginning and 69.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 233 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 197 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 36 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, InterpolantAutomatonStates: 38, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 21 PreInvPairs, 41 NumberOfFragments, 161 HoareAnnotationTreeSize, 21 FomulaSimplifications, 380 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 295 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 927 SizeOfPredicates, 12 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 94/190 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((y + (y * y)) == (c + (c * y))) && (((2 * c) + (c * y)) == ((2 * y) + (y * y)))) && (((k * y) == (y * y)) || (c < k))) && ((((((y * y) * y) * 2) + (((y * y) * y) * y)) + (y * y)) == (x * 4))) RESULT: Ultimate proved your program to be correct! [2023-11-21 21:00:35,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0260056b-4ac6-42f4-850d-84eb533d4149/bin/uautomizer-verify-bycVGegfSx/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 Writing output log to file Ultimate.log Result: TRUE