./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya --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 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:09:54,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:09:54,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:09:54,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:09:54,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:09:54,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:09:54,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:09:54,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:09:54,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:09:54,637 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:09:54,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:09:54,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:09:54,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:09:54,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:09:54,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:09:54,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:09:54,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:09:54,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:09:54,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:09:54,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:09:54,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:09:54,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:09:54,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:09:54,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:09:54,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:09:54,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:09:54,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:09:54,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:09:54,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:09:54,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:09:54,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:09:54,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:09:54,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:09:54,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:09:54,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:09:54,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:09:54,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:09:54,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:09:54,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:09:54,653 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:09:54,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:09:54,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:09:54,654 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 [2023-11-29 03:09:54,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:09:54,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:09:54,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:09:54,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:09:54,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:09:54,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-simple/nested_3.c [2023-11-29 03:09:57,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:09:57,922 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:09:57,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/sv-benchmarks/c/loop-simple/nested_3.c [2023-11-29 03:09:57,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/data/5afe6badf/8be2dd030cfa432c893780a8f4d5c4bf/FLAG8ca8395c9 [2023-11-29 03:09:57,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/data/5afe6badf/8be2dd030cfa432c893780a8f4d5c4bf [2023-11-29 03:09:57,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:09:57,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:09:57,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:09:57,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:09:57,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:09:57,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:09:57" (1/1) ... [2023-11-29 03:09:57,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f452b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:57, skipping insertion in model container [2023-11-29 03:09:57,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:09:57" (1/1) ... [2023-11-29 03:09:57,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:09:58,102 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/sv-benchmarks/c/loop-simple/nested_3.c[784,797] [2023-11-29 03:09:58,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:09:58,116 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:09:58,129 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/sv-benchmarks/c/loop-simple/nested_3.c[784,797] [2023-11-29 03:09:58,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:09:58,142 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:09:58,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58 WrapperNode [2023-11-29 03:09:58,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:09:58,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:09:58,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:09:58,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:09:58,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,177 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-11-29 03:09:58,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:09:58,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:09:58,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:09:58,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:09:58,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,205 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]. [2023-11-29 03:09:58,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:09:58,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:09:58,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:09:58,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:09:58,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (1/1) ... [2023-11-29 03:09:58,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:09:58,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:58,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:09:58,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:09:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:09:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:09:58,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:09:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:09:58,361 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:09:58,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:09:58,474 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:09:58,502 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:09:58,502 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 03:09:58,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:09:58 BoogieIcfgContainer [2023-11-29 03:09:58,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:09:58,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:09:58,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:09:58,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:09:58,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:09:57" (1/3) ... [2023-11-29 03:09:58,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761517db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:09:58, skipping insertion in model container [2023-11-29 03:09:58,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:09:58" (2/3) ... [2023-11-29 03:09:58,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761517db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:09:58, skipping insertion in model container [2023-11-29 03:09:58,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:09:58" (3/3) ... [2023-11-29 03:09:58,513 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_3.c [2023-11-29 03:09:58,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:09:58,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:09:58,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:09:58,586 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60a55624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:09:58,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:09:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 03:09:58,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:58,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 03:09:58,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:58,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2570098, now seen corresponding path program 1 times [2023-11-29 03:09:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989079625] [2023-11-29 03:09:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989079625] [2023-11-29 03:09:58,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989079625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:09:58,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:09:58,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:09:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008893980] [2023-11-29 03:09:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:09:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:09:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:09:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:09:58,792 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:58,813 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2023-11-29 03:09:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:09:58,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 03:09:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:58,822 INFO L225 Difference]: With dead ends: 21 [2023-11-29 03:09:58,823 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 03:09:58,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:09:58,828 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:58,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 03:09:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-29 03:09:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-29 03:09:58,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2023-11-29 03:09:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:58,854 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-29 03:09:58,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-29 03:09:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 03:09:58,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:58,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 03:09:58,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:09:58,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:58,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2541268, now seen corresponding path program 1 times [2023-11-29 03:09:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431301024] [2023-11-29 03:09:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431301024] [2023-11-29 03:09:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431301024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:09:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:09:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:09:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321690924] [2023-11-29 03:09:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:09:58,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:09:58,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:09:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:58,937 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:58,960 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2023-11-29 03:09:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:09:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 03:09:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:58,962 INFO L225 Difference]: With dead ends: 17 [2023-11-29 03:09:58,962 INFO L226 Difference]: Without dead ends: 14 [2023-11-29 03:09:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:58,964 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:58,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-29 03:09:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2023-11-29 03:09:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-29 03:09:58,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2023-11-29 03:09:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:58,971 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-29 03:09:58,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-29 03:09:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:09:58,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:58,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:58,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:09:58,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:58,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1569449088, now seen corresponding path program 1 times [2023-11-29 03:09:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566663177] [2023-11-29 03:09:58,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:58,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566663177] [2023-11-29 03:09:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566663177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:09:59,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:09:59,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:09:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032673587] [2023-11-29 03:09:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:09:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:09:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:09:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:59,031 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:59,053 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2023-11-29 03:09:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:09:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:09:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:59,054 INFO L225 Difference]: With dead ends: 21 [2023-11-29 03:09:59,055 INFO L226 Difference]: Without dead ends: 13 [2023-11-29 03:09:59,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:59,057 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:59,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-29 03:09:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2023-11-29 03:09:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-11-29 03:09:59,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-11-29 03:09:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:59,063 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-29 03:09:59,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-11-29 03:09:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:09:59,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:59,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:59,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:09:59,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:59,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1644603312, now seen corresponding path program 1 times [2023-11-29 03:09:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061005254] [2023-11-29 03:09:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:59,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061005254] [2023-11-29 03:09:59,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061005254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:09:59,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:09:59,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:09:59,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187347515] [2023-11-29 03:09:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:09:59,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:09:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:09:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:59,130 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:59,143 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-11-29 03:09:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:09:59,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:09:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:59,144 INFO L225 Difference]: With dead ends: 21 [2023-11-29 03:09:59,144 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 03:09:59,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:09:59,147 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:59,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 03:09:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-29 03:09:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-29 03:09:59,151 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-11-29 03:09:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:59,152 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-29 03:09:59,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-29 03:09:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 03:09:59,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:59,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:09:59,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:59,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1367520426, now seen corresponding path program 1 times [2023-11-29 03:09:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776905362] [2023-11-29 03:09:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776905362] [2023-11-29 03:09:59,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776905362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:09:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826690464] [2023-11-29 03:09:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:59,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:59,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:09:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:59,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:09:59,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826690464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:59,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:09:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 03:09:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876396022] [2023-11-29 03:09:59,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:09:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:09:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:09:59,360 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:59,384 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-29 03:09:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:09:59,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 03:09:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:59,385 INFO L225 Difference]: With dead ends: 25 [2023-11-29 03:09:59,385 INFO L226 Difference]: Without dead ends: 15 [2023-11-29 03:09:59,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:09:59,387 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:59,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-29 03:09:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-29 03:09:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-29 03:09:59,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2023-11-29 03:09:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:59,393 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-29 03:09:59,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-29 03:09:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 03:09:59,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:59,394 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:59,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:09:59,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:59,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:59,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash 476406064, now seen corresponding path program 2 times [2023-11-29 03:09:59,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537321261] [2023-11-29 03:09:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:09:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537321261] [2023-11-29 03:09:59,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537321261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:09:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649317197] [2023-11-29 03:09:59,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:09:59,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:59,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:59,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:59,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:09:59,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:09:59,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:09:59,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:09:59,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:59,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649317197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:59,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:09:59,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2023-11-29 03:09:59,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715456567] [2023-11-29 03:09:59,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:59,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:09:59,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:59,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:09:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:09:59,824 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:09:59,987 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2023-11-29 03:09:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:09:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 03:09:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:09:59,991 INFO L225 Difference]: With dead ends: 47 [2023-11-29 03:09:59,991 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 03:09:59,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:09:59,994 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:09:59,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:09:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 03:10:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2023-11-29 03:10:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-29 03:10:00,003 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2023-11-29 03:10:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:00,003 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-29 03:10:00,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-29 03:10:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:10:00,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:00,005 INFO L195 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:00,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:10:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:00,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:00,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2131043968, now seen corresponding path program 3 times [2023-11-29 03:10:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316391038] [2023-11-29 03:10:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 03:10:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316391038] [2023-11-29 03:10:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316391038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960401508] [2023-11-29 03:10:00,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:10:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:00,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:00,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:10:00,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:10:00,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:00,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:10:00,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 03:10:00,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 03:10:00,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960401508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:00,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:00,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 03:10:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366708650] [2023-11-29 03:10:00,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:00,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:10:00,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:10:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:10:00,419 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:00,465 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2023-11-29 03:10:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:10:00,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 03:10:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:00,467 INFO L225 Difference]: With dead ends: 92 [2023-11-29 03:10:00,467 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 03:10:00,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:10:00,469 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:00,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 03:10:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-29 03:10:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 88 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2023-11-29 03:10:00,492 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 25 [2023-11-29 03:10:00,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:00,493 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2023-11-29 03:10:00,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2023-11-29 03:10:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 03:10:00,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:00,497 INFO L195 NwaCegarLoop]: trace histogram [48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1] [2023-11-29 03:10:00,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:10:00,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:10:00,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1621905964, now seen corresponding path program 4 times [2023-11-29 03:10:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090929001] [2023-11-29 03:10:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:00,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-29 03:10:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:00,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090929001] [2023-11-29 03:10:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090929001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921475715] [2023-11-29 03:10:00,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:10:00,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:00,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:00,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:00,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:10:00,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:10:00,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:00,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:10:00,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-29 03:10:01,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 631 proven. 53 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-11-29 03:10:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921475715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:01,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-29 03:10:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698066575] [2023-11-29 03:10:01,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:01,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:10:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:10:01,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:10:01,080 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:01,163 INFO L93 Difference]: Finished difference Result 301 states and 354 transitions. [2023-11-29 03:10:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:10:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-29 03:10:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:01,166 INFO L225 Difference]: With dead ends: 301 [2023-11-29 03:10:01,166 INFO L226 Difference]: Without dead ends: 233 [2023-11-29 03:10:01,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:10:01,167 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:01,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-29 03:10:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-11-29 03:10:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.125) internal successors, (261), 232 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 261 transitions. [2023-11-29 03:10:01,214 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 261 transitions. Word has length 88 [2023-11-29 03:10:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:01,214 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 261 transitions. [2023-11-29 03:10:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 261 transitions. [2023-11-29 03:10:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 03:10:01,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:01,222 INFO L195 NwaCegarLoop]: trace histogram [144, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1] [2023-11-29 03:10:01,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:10:01,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:10:01,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:01,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1011087828, now seen corresponding path program 5 times [2023-11-29 03:10:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788103311] [2023-11-29 03:10:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:01,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-29 03:10:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788103311] [2023-11-29 03:10:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788103311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103231381] [2023-11-29 03:10:01,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:10:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:01,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:01,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:01,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:10:02,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2023-11-29 03:10:02,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:02,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:10:02,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-29 03:10:02,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14698 backedges. 0 proven. 11110 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-29 03:10:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103231381] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:02,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-11-29 03:10:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638119321] [2023-11-29 03:10:02,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:10:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:10:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:10:02,920 INFO L87 Difference]: Start difference. First operand 233 states and 261 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:03,020 INFO L93 Difference]: Finished difference Result 350 states and 393 transitions. [2023-11-29 03:10:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:10:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2023-11-29 03:10:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:03,025 INFO L225 Difference]: With dead ends: 350 [2023-11-29 03:10:03,025 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 03:10:03,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:10:03,027 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:03,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 03:10:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-29 03:10:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.1242774566473988) internal successors, (389), 346 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 389 transitions. [2023-11-29 03:10:03,086 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 389 transitions. Word has length 232 [2023-11-29 03:10:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:03,087 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 389 transitions. [2023-11-29 03:10:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 389 transitions. [2023-11-29 03:10:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-11-29 03:10:03,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:03,095 INFO L195 NwaCegarLoop]: trace histogram [216, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1] [2023-11-29 03:10:03,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:10:03,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:03,296 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:03,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1991736492, now seen corresponding path program 6 times [2023-11-29 03:10:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909984473] [2023-11-29 03:10:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:03,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 28563 refuted. 0 times theorem prover too weak. 4590 trivial. 0 not checked. [2023-11-29 03:10:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909984473] [2023-11-29 03:10:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909984473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070269223] [2023-11-29 03:10:04,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:10:04,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:04,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:04,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:10:05,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2023-11-29 03:10:05,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:05,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:10:05,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 9256 proven. 792 refuted. 0 times theorem prover too weak. 23105 trivial. 0 not checked. [2023-11-29 03:10:05,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 9256 proven. 792 refuted. 0 times theorem prover too weak. 23105 trivial. 0 not checked. [2023-11-29 03:10:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070269223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:06,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 53 [2023-11-29 03:10:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458352118] [2023-11-29 03:10:06,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:06,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 03:10:06,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:06,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 03:10:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2340, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:10:06,750 INFO L87 Difference]: Start difference. First operand 347 states and 389 transitions. Second operand has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:12,290 INFO L93 Difference]: Finished difference Result 644 states and 724 transitions. [2023-11-29 03:10:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2023-11-29 03:10:12,291 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2023-11-29 03:10:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:12,292 INFO L225 Difference]: With dead ends: 644 [2023-11-29 03:10:12,292 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:10:12,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43150 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10998, Invalid=99558, Unknown=0, NotChecked=0, Total=110556 [2023-11-29 03:10:12,319 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:12,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:10:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:10:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:10:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:10:12,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 346 [2023-11-29 03:10:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:12,321 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:10:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:10:12,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:10:12,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:10:12,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:10:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:10:12,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 03:10:16,892 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:10:16,893 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-29 03:10:16,893 INFO L895 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~c~0#1| 6)) (.cse0 (<= |ULTIMATE.start_main_~a~0#1| 5)) (.cse2 (= 5 |ULTIMATE.start_main_~b~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 0) .cse0 .cse1) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse2) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse0 .cse1) (and .cse0 .cse1 (= 2 |ULTIMATE.start_main_~b~0#1|)) (and .cse0 (= 3 |ULTIMATE.start_main_~b~0#1|) .cse1) (and (= |ULTIMATE.start_main_~c~0#1| 1) .cse0 .cse2) (and (= |ULTIMATE.start_main_~b~0#1| 4) .cse0 .cse1) (and .cse0 .cse2 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 .cse2 (= |ULTIMATE.start_main_~c~0#1| 4)) (and .cse0 (= 5 |ULTIMATE.start_main_~c~0#1|) .cse2) (and .cse0 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 .cse2 (= 3 |ULTIMATE.start_main_~c~0#1|)))) [2023-11-29 03:10:16,893 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2023-11-29 03:10:16,894 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 6) (= 6 |ULTIMATE.start_main_~b~0#1|) (= 6 |ULTIMATE.start_main_~c~0#1|)) [2023-11-29 03:10:16,894 INFO L899 garLoopResultBuilder]: For program point L21-4(lines 15 32) no Hoare annotation was computed. [2023-11-29 03:10:16,894 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:10:16,894 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2023-11-29 03:10:16,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2023-11-29 03:10:16,894 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2023-11-29 03:10:16,895 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 26) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 5)) (.cse1 (= 6 |ULTIMATE.start_main_~c~0#1|))) (or (and .cse0 (= 6 |ULTIMATE.start_main_~b~0#1|) .cse1) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse0 .cse1) (and .cse0 (= 2 |ULTIMATE.start_main_~b~0#1|) .cse1) (and .cse0 (= 5 |ULTIMATE.start_main_~b~0#1|) .cse1) (and (= |ULTIMATE.start_main_~b~0#1| 0) .cse0 .cse1) (and (= |ULTIMATE.start_main_~b~0#1| 4) .cse0 .cse1) (and .cse0 (= 3 |ULTIMATE.start_main_~b~0#1|) .cse1))) [2023-11-29 03:10:16,898 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-11-29 03:10:16,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:10:16,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:10:16 BoogieIcfgContainer [2023-11-29 03:10:16,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:10:16,916 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:10:16,916 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:10:16,917 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:10:16,917 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:09:58" (3/4) ... [2023-11-29 03:10:16,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:10:16,927 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-29 03:10:16,927 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 03:10:16,927 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 03:10:16,928 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 03:10:17,020 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:10:17,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:10:17,021 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:10:17,022 INFO L158 Benchmark]: Toolchain (without parser) took 19074.19ms. Allocated memory was 155.2MB in the beginning and 394.3MB in the end (delta: 239.1MB). Free memory was 119.6MB in the beginning and 227.7MB in the end (delta: -108.2MB). Peak memory consumption was 133.0MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,022 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:10:17,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.78ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 109.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.19ms. Allocated memory is still 155.2MB. Free memory was 109.1MB in the beginning and 107.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,024 INFO L158 Benchmark]: Boogie Preprocessor took 39.07ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 105.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,024 INFO L158 Benchmark]: RCFGBuilder took 284.97ms. Allocated memory is still 155.2MB. Free memory was 105.9MB in the beginning and 95.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,025 INFO L158 Benchmark]: TraceAbstraction took 18409.62ms. Allocated memory was 155.2MB in the beginning and 394.3MB in the end (delta: 239.1MB). Free memory was 95.4MB in the beginning and 231.9MB in the end (delta: -136.5MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,025 INFO L158 Benchmark]: Witness Printer took 104.92ms. Allocated memory is still 394.3MB. Free memory was 231.9MB in the beginning and 227.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:10:17,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.78ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 109.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.19ms. Allocated memory is still 155.2MB. Free memory was 109.1MB in the beginning and 107.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.07ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 105.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.97ms. Allocated memory is still 155.2MB. Free memory was 105.9MB in the beginning and 95.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18409.62ms. Allocated memory was 155.2MB in the beginning and 394.3MB in the end (delta: 239.1MB). Free memory was 95.4MB in the beginning and 231.9MB in the end (delta: -136.5MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. * Witness Printer took 104.92ms. Allocated memory is still 394.3MB. Free memory was 231.9MB in the beginning and 227.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 10, TraceHistogramMax: 216, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 953 IncrementalHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 70 mSDtfsCounter, 953 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1772 GetRequests, 1386 SyntacticMatches, 8 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43277 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=9, InterpolantAutomatonStates: 353, 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, 10 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 304 NumberOfFragments, 202 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3981 FormulaSimplificationTreeSizeReduction, 2.5s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2811 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1291 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 2151 ConstructedInterpolants, 0 QuantifiedInterpolants, 5817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1532 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 85176/148839 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: 21]: Loop Invariant Derived loop invariant: (((a <= 6) && (6 == b)) && (6 == c)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((b == 0) && (a <= 5)) && (c <= 6)) || (((c == 0) && (a <= 5)) && (5 == b))) || (((b == 1) && (a <= 5)) && (c <= 6))) || (((a <= 5) && (c <= 6)) && (2 == b))) || (((a <= 5) && (3 == b)) && (c <= 6))) || (((c == 1) && (a <= 5)) && (5 == b))) || (((b == 4) && (a <= 5)) && (c <= 6))) || (((a <= 5) && (5 == b)) && (6 == c))) || (((a <= 5) && (5 == b)) && (c == 4))) || (((a <= 5) && (5 == c)) && (5 == b))) || (((a <= 5) && (5 == b)) && (2 == c))) || (((a <= 5) && (5 == b)) && (3 == c))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((a <= 5) && (6 == b)) && (6 == c)) || (((b == 1) && (a <= 5)) && (6 == c))) || (((a <= 5) && (2 == b)) && (6 == c))) || (((a <= 5) && (5 == b)) && (6 == c))) || (((b == 0) && (a <= 5)) && (6 == c))) || (((b == 4) && (a <= 5)) && (6 == c))) || (((a <= 5) && (3 == b)) && (6 == c))) RESULT: Ultimate proved your program to be correct! [2023-11-29 03:10:17,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291c0d38-1ff9-4489-aedd-01035a4708d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE