./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa3033c827040052fc2b3f2ac84da9b892249c5596676af10298d2e88bf55166 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:20:24,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:20:24,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:20:24,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:20:24,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:20:24,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:20:24,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:20:24,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:20:24,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:20:24,509 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:20:24,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:20:24,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:20:24,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:20:24,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:20:24,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:20:24,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:20:24,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:20:24,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:20:24,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:20:24,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:20:24,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:20:24,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:20:24,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:20:24,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:20:24,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:20:24,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:20:24,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:20:24,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:20:24,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:20:24,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:20:24,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:20:24,515 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3033c827040052fc2b3f2ac84da9b892249c5596676af10298d2e88bf55166 [2024-11-13 16:20:24,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:20:24,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:20:24,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:20:24,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:20:24,949 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:20:24,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c Unable to find full path for "g++" [2024-11-13 16:20:27,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:20:27,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:20:27,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c [2024-11-13 16:20:27,701 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/data/29f4b2e6b/59f12fcd451e4cb0ae02156faf23261d/FLAG545b16fd0 [2024-11-13 16:20:27,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/data/29f4b2e6b/59f12fcd451e4cb0ae02156faf23261d [2024-11-13 16:20:27,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:20:27,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:20:27,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:20:27,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:20:27,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:20:27,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:20:27" (1/1) ... [2024-11-13 16:20:27,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a92a540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:27, skipping insertion in model container [2024-11-13 16:20:27,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:20:27" (1/1) ... [2024-11-13 16:20:27,753 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:20:27,964 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c[458,471] [2024-11-13 16:20:27,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:20:28,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:20:28,019 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c[458,471] [2024-11-13 16:20:28,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:20:28,047 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:20:28,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28 WrapperNode [2024-11-13 16:20:28,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:20:28,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:20:28,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:20:28,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:20:28,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,084 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2024-11-13 16:20:28,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:20:28,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:20:28,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:20:28,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:20:28,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,120 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 16:20:28,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:20:28,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:20:28,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:20:28,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:20:28,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (1/1) ... [2024-11-13 16:20:28,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:20:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:28,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:20:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:20:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:20:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 16:20:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 16:20:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:20:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:20:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:20:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 16:20:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 16:20:28,285 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:20:28,288 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:20:28,470 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-13 16:20:28,470 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:20:28,491 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:20:28,491 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:20:28,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:20:28 BoogieIcfgContainer [2024-11-13 16:20:28,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:20:28,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:20:28,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:20:28,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:20:28,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:20:27" (1/3) ... [2024-11-13 16:20:28,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e87a9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:20:28, skipping insertion in model container [2024-11-13 16:20:28,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:20:28" (2/3) ... [2024-11-13 16:20:28,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e87a9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:20:28, skipping insertion in model container [2024-11-13 16:20:28,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:20:28" (3/3) ... [2024-11-13 16:20:28,511 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound50.c [2024-11-13 16:20:28,535 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:20:28,540 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ps6-ll_valuebound50.c that has 3 procedures, 24 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 16:20:28,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:20:28,642 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f16b8ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:20:28,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:20:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:20:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:20:28,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:28,660 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:28,661 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:28,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1607105944, now seen corresponding path program 1 times [2024-11-13 16:20:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114231521] [2024-11-13 16:20:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:28,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:28,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:20:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:28,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 16:20:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:20:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114231521] [2024-11-13 16:20:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114231521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:20:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:20:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:20:28,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157685131] [2024-11-13 16:20:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:28,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:20:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:20:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:20:28,995 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:20:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:29,024 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2024-11-13 16:20:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:20:29,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-13 16:20:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:29,035 INFO L225 Difference]: With dead ends: 45 [2024-11-13 16:20:29,035 INFO L226 Difference]: Without dead ends: 20 [2024-11-13 16:20:29,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:20:29,044 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:29,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:20:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-13 16:20:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-13 16:20:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:20:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-13 16:20:29,099 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2024-11-13 16:20:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:29,100 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-13 16:20:29,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:20:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-13 16:20:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:20:29,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:29,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:29,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:20:29,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:29,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1945612574, now seen corresponding path program 1 times [2024-11-13 16:20:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:29,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307965588] [2024-11-13 16:20:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374831506] [2024-11-13 16:20:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:29,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:29,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:29,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:20:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:29,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:20:29,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:20:29,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:20:29,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307965588] [2024-11-13 16:20:29,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:20:29,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374831506] [2024-11-13 16:20:29,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374831506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:20:29,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:20:29,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:20:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607746182] [2024-11-13 16:20:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:29,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:20:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:20:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:20:29,413 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:20:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:29,502 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-13 16:20:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:20:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-13 16:20:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:29,504 INFO L225 Difference]: With dead ends: 31 [2024-11-13 16:20:29,504 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 16:20:29,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:20:29,505 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:29,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:20:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 16:20:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 16:20:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:20:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-13 16:20:29,524 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2024-11-13 16:20:29,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:29,524 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-13 16:20:29,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:20:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-13 16:20:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:20:29,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:29,526 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:29,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:20:29,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:29,731 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:29,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1391503552, now seen corresponding path program 1 times [2024-11-13 16:20:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446989785] [2024-11-13 16:20:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422462816] [2024-11-13 16:20:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:29,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:29,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:20:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:29,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:20:29,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:20:30,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:20:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446989785] [2024-11-13 16:20:30,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:20:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422462816] [2024-11-13 16:20:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422462816] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:20:30,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-13 16:20:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367367225] [2024-11-13 16:20:30,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:30,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:20:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:20:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:20:30,242 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:20:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:30,349 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-11-13 16:20:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:20:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-13 16:20:30,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:30,352 INFO L225 Difference]: With dead ends: 33 [2024-11-13 16:20:30,352 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 16:20:30,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:20:30,354 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:30,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:20:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 16:20:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 16:20:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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) [2024-11-13 16:20:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-13 16:20:30,380 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2024-11-13 16:20:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:30,380 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-13 16:20:30,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:20:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-13 16:20:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:20:30,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:30,382 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:30,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:30,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:30,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:30,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:30,583 INFO L85 PathProgramCache]: Analyzing trace with hash -197744487, now seen corresponding path program 1 times [2024-11-13 16:20:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801344996] [2024-11-13 16:20:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:30,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:30,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015897175] [2024-11-13 16:20:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:30,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:30,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:30,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:30,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:20:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:30,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 16:20:30,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:20:31,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:20:31,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:31,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801344996] [2024-11-13 16:20:31,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:20:31,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015897175] [2024-11-13 16:20:31,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015897175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:31,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:20:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-11-13 16:20:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637788959] [2024-11-13 16:20:31,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:31,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:20:31,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:20:31,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:20:31,920 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-13 16:20:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:32,452 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-11-13 16:20:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:20:32,452 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2024-11-13 16:20:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:32,454 INFO L225 Difference]: With dead ends: 50 [2024-11-13 16:20:32,454 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 16:20:32,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:20:32,455 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:32,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:20:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 16:20:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-13 16:20:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:20:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-13 16:20:32,499 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 36 [2024-11-13 16:20:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:32,499 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-13 16:20:32,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-13 16:20:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-13 16:20:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 16:20:32,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:32,501 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:32,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:20:32,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:32,706 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:32,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1316496183, now seen corresponding path program 2 times [2024-11-13 16:20:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005137107] [2024-11-13 16:20:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377165637] [2024-11-13 16:20:32,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:32,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:32,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:32,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:20:32,872 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:32,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:32,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:20:32,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 35 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 16:20:33,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:20:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005137107] [2024-11-13 16:20:35,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:20:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377165637] [2024-11-13 16:20:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377165637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:35,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:20:35,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-13 16:20:35,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948740552] [2024-11-13 16:20:35,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:35,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 16:20:35,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:35,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 16:20:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:20:35,546 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-13 16:20:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:36,870 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-11-13 16:20:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 16:20:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) Word has length 57 [2024-11-13 16:20:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:36,874 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:20:36,874 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 16:20:36,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:20:36,877 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:36,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 255 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:20:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 16:20:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-13 16:20:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 16:20:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-13 16:20:36,924 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 57 [2024-11-13 16:20:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:36,924 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-13 16:20:36,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-13 16:20:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-13 16:20:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 16:20:36,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:36,931 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:36,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:37,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:37,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:37,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:37,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2031439463, now seen corresponding path program 3 times [2024-11-13 16:20:37,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:37,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801147042] [2024-11-13 16:20:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:37,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:20:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042043040] [2024-11-13 16:20:37,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:20:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:37,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:20:37,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 16:20:37,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:37,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 16:20:37,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 27 proven. 160 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-13 16:20:37,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:46,774 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 7)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 7) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2024-11-13 16:20:54,840 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:21:06,909 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:21:23,072 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:21:27,081 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45|))) (or (= 0 (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 10) .cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7)) 12)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7) .cse0) (+ (* 7 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|))))))) is different from true [2024-11-13 16:21:43,292 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:21:59,379 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 16:22:03,384 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45|))) (or (= 0 (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 10) .cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7)) 12)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7) .cse0) (+ (* 7 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|)))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-11-13 16:22:15,452 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 8)) (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 8))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2024-11-13 16:22:31,545 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 9)) (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 9))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2024-11-13 16:22:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 27 proven. 70 refuted. 24 times theorem prover too weak. 194 trivial. 66 not checked. [2024-11-13 16:22:39,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801147042] [2024-11-13 16:22:39,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 16:22:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042043040] [2024-11-13 16:22:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042043040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:39,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:22:39,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2024-11-13 16:22:39,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462985662] [2024-11-13 16:22:39,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:39,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:22:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:22:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=585, Unknown=5, NotChecked=270, Total=992 [2024-11-13 16:22:39,623 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-13 16:22:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:40,674 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2024-11-13 16:22:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:22:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 92 [2024-11-13 16:22:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:40,677 INFO L225 Difference]: With dead ends: 66 [2024-11-13 16:22:40,677 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 16:22:40,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 152 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=258, Invalid=1163, Unknown=5, NotChecked=380, Total=1806 [2024-11-13 16:22:40,680 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:40,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 472 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 246 Unchecked, 0.5s Time] [2024-11-13 16:22:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 16:22:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 16:22:40,684 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) [2024-11-13 16:22:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 16:22:40,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2024-11-13 16:22:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:40,685 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 16:22:40,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-13 16:22:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 16:22:40,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 16:22:40,693 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 16:22:40,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:40,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:40,897 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-13 16:22:40,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 16:22:41,646 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:22:41,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:22:41 BoogieIcfgContainer [2024-11-13 16:22:41,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:22:41,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:22:41,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:22:41,687 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:22:41,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:20:28" (3/4) ... [2024-11-13 16:22:41,691 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 16:22:41,697 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-13 16:22:41,697 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-13 16:22:41,705 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-13 16:22:41,705 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 16:22:41,706 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 16:22:41,706 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 16:22:41,817 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:22:41,818 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 16:22:41,818 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:22:41,820 INFO L158 Benchmark]: Toolchain (without parser) took 134094.81ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.8MB in the beginning and 45.9MB in the end (delta: 45.9MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,821 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:22:41,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.30ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 80.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.43ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:22:41,825 INFO L158 Benchmark]: Boogie Preprocessor took 46.95ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,826 INFO L158 Benchmark]: RCFGBuilder took 358.46ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 68.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,826 INFO L158 Benchmark]: TraceAbstraction took 133188.20ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.7MB in the beginning and 49.8MB in the end (delta: 17.9MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,828 INFO L158 Benchmark]: Witness Printer took 131.68ms. Allocated memory is still 142.6MB. Free memory was 49.8MB in the beginning and 45.9MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:22:41,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.30ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 80.6MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.43ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.95ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 358.46ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 68.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 133188.20ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.7MB in the beginning and 49.8MB in the end (delta: 17.9MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Witness Printer took 131.68ms. Allocated memory is still 142.6MB. Free memory was 49.8MB in the beginning and 45.9MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 132.3s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 987 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 246 IncrementalHoareTripleChecker+Unchecked, 851 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 804 IncrementalHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 136 mSDtfsCounter, 804 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 359 SyntacticMatches, 8 SemanticMatches, 102 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 126.6s InterpolantComputationTime, 474 NumberOfCodeBlocks, 474 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 446 ConstructedInterpolants, 3 QuantifiedInterpolants, 3215 SizeOfPredicates, 13 NumberOfNonLiveVariables, 597 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 648/1048 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: 28]: Loop Invariant Derived loop invariant: ((((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((6 * (((((__int128) y * y) * y) * y) * y)) + (2 * ((((((__int128) y * y) * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (k <= 256)) && ((((__int128) 6 * y) + ((__int128) y * y)) == (((__int128) c * y) + ((__int128) 6 * c)))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-13 16:22:41,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62b52d0-f6dc-4ea0-8e71-7b51afca86c5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE