./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:59:03,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:59:03,848 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:59:03,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:59:03,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:59:03,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:59:03,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:59:03,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:59:03,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:59:03,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:59:03,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:59:03,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:59:03,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:59:03,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:59:03,879 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:59:03,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:59:03,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:59:03,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:59:03,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:59:03,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:59:03,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:59:03,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:59:03,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:59:03,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:59:03,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:59:03,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:59:03,883 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2024-11-13 12:59:04,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:59:04,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:59:04,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:59:04,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:59:04,201 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:59:04,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c Unable to find full path for "g++" [2024-11-13 12:59:06,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:59:06,393 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:59:06,394 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-13 12:59:06,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data/eff402ead/20629f634cb34a91a4fbab62e2f483d7/FLAG529e5e953 [2024-11-13 12:59:06,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data/eff402ead/20629f634cb34a91a4fbab62e2f483d7 [2024-11-13 12:59:06,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:59:06,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:59:06,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:59:06,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:59:06,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:59:06,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f82b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06, skipping insertion in model container [2024-11-13 12:59:06,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:59:06,653 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2024-11-13 12:59:06,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:59:06,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:59:06,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2024-11-13 12:59:06,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:59:06,702 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:59:06,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06 WrapperNode [2024-11-13 12:59:06,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:59:06,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:59:06,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:59:06,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:59:06,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,732 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-13 12:59:06,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:59:06,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:59:06,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:59:06,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:59:06,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,750 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:59:06,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:59:06,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:59:06,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:59:06,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:59:06,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (1/1) ... [2024-11-13 12:59:06,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:59:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:06,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:59:06,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:59:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:59:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-13 12:59:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-13 12:59:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:59:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:59:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:59:06,917 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:59:06,919 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:59:07,052 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-13 12:59:07,052 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:59:07,062 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:59:07,062 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 12:59:07,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:07 BoogieIcfgContainer [2024-11-13 12:59:07,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:59:07,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:59:07,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:59:07,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:59:07,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:59:06" (1/3) ... [2024-11-13 12:59:07,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab215ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:59:07, skipping insertion in model container [2024-11-13 12:59:07,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:06" (2/3) ... [2024-11-13 12:59:07,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab215ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:59:07, skipping insertion in model container [2024-11-13 12:59:07,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:07" (3/3) ... [2024-11-13 12:59:07,075 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2024-11-13 12:59:07,093 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:59:07,096 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recHanoi03-1.c that has 2 procedures, 21 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 12:59:07,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:59:07,192 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@510c0601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:59:07,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:59:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 12:59:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 12:59:07,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:07,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:07,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:07,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:07,217 INFO L85 PathProgramCache]: Analyzing trace with hash 176773050, now seen corresponding path program 1 times [2024-11-13 12:59:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:59:07,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188335200] [2024-11-13 12:59:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:59:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:59:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:07,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 12:59:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:59:07,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:59:07,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188335200] [2024-11-13 12:59:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188335200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:59:07,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:59:07,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:59:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725989232] [2024-11-13 12:59:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:59:07,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:59:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:59:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:59:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:59:07,657 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:07,732 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-13 12:59:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:59:07,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 12:59:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:07,748 INFO L225 Difference]: With dead ends: 31 [2024-11-13 12:59:07,748 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 12:59:07,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:59:07,756 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:07,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:59:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 12:59:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 12:59:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 12:59:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-13 12:59:07,801 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2024-11-13 12:59:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:07,802 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-13 12:59:07,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-13 12:59:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 12:59:07,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:07,806 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:07,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:59:07,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:07,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1929421739, now seen corresponding path program 1 times [2024-11-13 12:59:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:59:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984309489] [2024-11-13 12:59:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:59:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:59:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:07,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 12:59:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:59:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:59:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984309489] [2024-11-13 12:59:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984309489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:59:07,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:59:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:59:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127906102] [2024-11-13 12:59:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:59:07,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:59:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:59:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:59:07,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:59:07,898 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:07,907 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-13 12:59:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:59:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-13 12:59:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:07,908 INFO L225 Difference]: With dead ends: 29 [2024-11-13 12:59:07,912 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 12:59:07,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:59:07,913 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 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 [2024-11-13 12:59:07,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:59:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 12:59:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-13 12:59:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 12:59:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-13 12:59:07,922 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2024-11-13 12:59:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:07,922 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-13 12:59:07,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-13 12:59:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 12:59:07,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:07,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:07,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:59:07,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 319247983, now seen corresponding path program 1 times [2024-11-13 12:59:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:59:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560931362] [2024-11-13 12:59:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:59:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:59:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 12:59:07,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 12:59:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 12:59:08,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 12:59:08,004 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 12:59:08,005 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 12:59:08,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:59:08,011 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 12:59:08,029 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 12:59:08,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 12:59:08 BoogieIcfgContainer [2024-11-13 12:59:08,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 12:59:08,033 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 12:59:08,033 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 12:59:08,034 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 12:59:08,034 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:07" (3/4) ... [2024-11-13 12:59:08,037 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 12:59:08,037 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 12:59:08,038 INFO L158 Benchmark]: Toolchain (without parser) took 1614.96ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 60.8MB in the end (delta: 56.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-13 12:59:08,039 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:59:08,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.00ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:59:08,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.43ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:59:08,040 INFO L158 Benchmark]: Boogie Preprocessor took 28.80ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:59:08,040 INFO L158 Benchmark]: RCFGBuilder took 299.59ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 94.7MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 12:59:08,040 INFO L158 Benchmark]: TraceAbstraction took 967.19ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 61.2MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 12:59:08,041 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 60.8MB in the end (delta: 174.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:59:08,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.00ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.43ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.80ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.59ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 94.7MB in the end (delta: 9.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 967.19ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 61.2MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 60.8MB in the end (delta: 174.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 36]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=1] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1] [L31] RET, EXPR hanoi(n) VAL [n=1] [L31] unsigned result = hanoi(n); [L33] result+1>0 && result+1 == 1<0 && result+1 == 1<0 && result+1 == 1< main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2024-11-13 12:59:11,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:59:11,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:59:11,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:59:11,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:59:11,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:59:11,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c Unable to find full path for "g++" [2024-11-13 12:59:13,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:59:13,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:59:13,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-13 12:59:13,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data/98c404042/7d666ff785cc4fd2b737497de372356b/FLAGf83a20c5f [2024-11-13 12:59:13,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/data/98c404042/7d666ff785cc4fd2b737497de372356b [2024-11-13 12:59:13,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:59:13,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:59:13,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:59:13,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:59:13,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:59:13,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218184d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13, skipping insertion in model container [2024-11-13 12:59:13,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:59:13,739 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2024-11-13 12:59:13,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:59:13,762 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:59:13,783 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2024-11-13 12:59:13,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:59:13,804 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:59:13,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13 WrapperNode [2024-11-13 12:59:13,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:59:13,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:59:13,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:59:13,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:59:13,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,844 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-11-13 12:59:13,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:59:13,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:59:13,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:59:13,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:59:13,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,872 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:59:13,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:59:13,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:59:13,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:59:13,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:59:13,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (1/1) ... [2024-11-13 12:59:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:59:13,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:13,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:59:13,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:59:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:59:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-13 12:59:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-13 12:59:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:59:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:59:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 12:59:14,041 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:59:14,043 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:59:14,198 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 12:59:14,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:59:14,212 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:59:14,212 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 12:59:14,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:14 BoogieIcfgContainer [2024-11-13 12:59:14,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:59:14,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:59:14,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:59:14,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:59:14,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:59:13" (1/3) ... [2024-11-13 12:59:14,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee2faae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:59:14, skipping insertion in model container [2024-11-13 12:59:14,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:59:13" (2/3) ... [2024-11-13 12:59:14,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee2faae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:59:14, skipping insertion in model container [2024-11-13 12:59:14,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:14" (3/3) ... [2024-11-13 12:59:14,225 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2024-11-13 12:59:14,243 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:59:14,246 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recHanoi03-1.c that has 2 procedures, 17 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 12:59:14,312 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:59:14,331 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@119b0c28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:59:14,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:59:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 12:59:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 12:59:14,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:14,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:14,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:14,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2024-11-13 12:59:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:14,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604373686] [2024-11-13 12:59:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:59:14,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:14,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:14,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:59:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:14,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 12:59:14,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:59:14,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:59:14,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604373686] [2024-11-13 12:59:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604373686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:59:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:59:14,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 12:59:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242236105] [2024-11-13 12:59:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:59:14,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:59:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:59:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:59:14,835 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:15,005 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-13 12:59:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:59:15,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-13 12:59:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:15,015 INFO L225 Difference]: With dead ends: 26 [2024-11-13 12:59:15,016 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 12:59:15,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:59:15,025 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:15,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:59:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 12:59:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 12:59:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 12:59:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-13 12:59:15,074 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2024-11-13 12:59:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:15,074 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-13 12:59:15,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 12:59:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-13 12:59:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 12:59:15,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:15,077 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:15,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 12:59:15,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:15,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:15,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2024-11-13 12:59:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142165629] [2024-11-13 12:59:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:59:15,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:15,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:15,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:15,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:59:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:15,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 12:59:15,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:59:15,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:59:16,282 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:16,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142165629] [2024-11-13 12:59:16,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142165629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:16,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-13 12:59:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110090138] [2024-11-13 12:59:16,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:16,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 12:59:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:16,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 12:59:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-13 12:59:16,285 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 12:59:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:16,722 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-13 12:59:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 12:59:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2024-11-13 12:59:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:16,724 INFO L225 Difference]: With dead ends: 28 [2024-11-13 12:59:16,724 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 12:59:16,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-13 12:59:16,725 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:16,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:59:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 12:59:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 12:59:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 12:59:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-13 12:59:16,733 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-13 12:59:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:16,733 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-13 12:59:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 12:59:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-13 12:59:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 12:59:16,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:16,734 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:16,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:59:16,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:16,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:16,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2024-11-13 12:59:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:16,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164498264] [2024-11-13 12:59:16,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:59:16,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:16,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:16,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:59:16,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:59:16,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:59:16,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 12:59:17,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 12:59:17,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 12:59:19,084 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164498264] [2024-11-13 12:59:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164498264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2024-11-13 12:59:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778500867] [2024-11-13 12:59:19,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:19,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 12:59:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 12:59:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-13 12:59:19,087 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 12:59:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:20,010 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-13 12:59:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 12:59:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 29 [2024-11-13 12:59:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:20,012 INFO L225 Difference]: With dead ends: 34 [2024-11-13 12:59:20,012 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 12:59:20,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 12:59:20,014 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:20,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 122 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:59:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 12:59:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-13 12:59:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 12:59:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-13 12:59:20,024 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2024-11-13 12:59:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:20,024 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-13 12:59:20,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 12:59:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-13 12:59:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 12:59:20,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:20,026 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:20,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 12:59:20,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:20,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:20,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash -492655308, now seen corresponding path program 3 times [2024-11-13 12:59:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626808622] [2024-11-13 12:59:20,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:59:20,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:20,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:20,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:59:20,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 12:59:20,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:59:20,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 12:59:20,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 12:59:20,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 12:59:23,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626808622] [2024-11-13 12:59:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626808622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:23,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:23,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2024-11-13 12:59:23,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629792310] [2024-11-13 12:59:23,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:23,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 12:59:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 12:59:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 12:59:23,443 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-13 12:59:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:24,520 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-13 12:59:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 12:59:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 41 [2024-11-13 12:59:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:24,521 INFO L225 Difference]: With dead ends: 40 [2024-11-13 12:59:24,521 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 12:59:24,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=277, Invalid=2173, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 12:59:24,524 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:24,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 180 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:59:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 12:59:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-13 12:59:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 12:59:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2024-11-13 12:59:24,531 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2024-11-13 12:59:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:24,532 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2024-11-13 12:59:24,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-13 12:59:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2024-11-13 12:59:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 12:59:24,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:24,533 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:24,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 12:59:24,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:24,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:24,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1906255628, now seen corresponding path program 4 times [2024-11-13 12:59:24,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:24,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538388691] [2024-11-13 12:59:24,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:59:24,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:24,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:24,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:59:24,792 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:59:24,793 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:59:24,798 WARN L253 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 12:59:24,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 12:59:25,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 12:59:28,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538388691] [2024-11-13 12:59:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538388691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:28,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2024-11-13 12:59:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445534670] [2024-11-13 12:59:28,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:28,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 12:59:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 12:59:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 12:59:28,875 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-13 12:59:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:30,395 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-11-13 12:59:30,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 12:59:30,396 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) Word has length 53 [2024-11-13 12:59:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:30,397 INFO L225 Difference]: With dead ends: 46 [2024-11-13 12:59:30,397 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 12:59:30,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=399, Invalid=3633, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 12:59:30,401 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:30,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 326 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 12:59:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 12:59:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 12:59:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-13 12:59:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-13 12:59:30,409 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2024-11-13 12:59:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:30,410 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-13 12:59:30,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-13 12:59:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-13 12:59:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 12:59:30,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:30,412 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:30,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 12:59:30,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:30,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:30,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 788849844, now seen corresponding path program 5 times [2024-11-13 12:59:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585107686] [2024-11-13 12:59:30,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:59:30,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:30,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:30,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:59:30,695 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 12:59:30,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:59:30,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 12:59:30,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-13 12:59:31,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 12:59:36,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585107686] [2024-11-13 12:59:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585107686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:36,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2024-11-13 12:59:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496148976] [2024-11-13 12:59:36,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:36,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 12:59:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 12:59:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 12:59:36,267 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-13 12:59:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:38,605 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-11-13 12:59:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 12:59:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) Word has length 65 [2024-11-13 12:59:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:38,607 INFO L225 Difference]: With dead ends: 52 [2024-11-13 12:59:38,607 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 12:59:38,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=537, Invalid=5469, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 12:59:38,609 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:38,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 438 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 12:59:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 12:59:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 12:59:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 12:59:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-11-13 12:59:38,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2024-11-13 12:59:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:38,619 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-11-13 12:59:38,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-13 12:59:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-11-13 12:59:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 12:59:38,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:38,621 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:38,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 12:59:38,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:38,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:38,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1302253684, now seen corresponding path program 6 times [2024-11-13 12:59:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:38,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718008687] [2024-11-13 12:59:38,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:59:38,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:38,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:38,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:38,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 12:59:38,926 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-13 12:59:38,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:59:38,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 12:59:38,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-13 12:59:39,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 12:59:46,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:46,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718008687] [2024-11-13 12:59:46,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718008687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:46,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 39] total 66 [2024-11-13 12:59:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635852239] [2024-11-13 12:59:46,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:46,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-13 12:59:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-13 12:59:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 12:59:46,237 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-13 12:59:49,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:59:49,152 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-13 12:59:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 12:59:49,154 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) Word has length 77 [2024-11-13 12:59:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:59:49,155 INFO L225 Difference]: With dead ends: 58 [2024-11-13 12:59:49,155 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 12:59:49,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=691, Invalid=7681, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 12:59:49,158 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 318 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:59:49,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 586 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 12:59:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 12:59:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 12:59:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-13 12:59:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-13 12:59:49,167 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2024-11-13 12:59:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:59:49,168 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-13 12:59:49,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-13 12:59:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-13 12:59:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 12:59:49,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:59:49,169 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:59:49,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 12:59:49,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:49,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:59:49,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:59:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1287742412, now seen corresponding path program 7 times [2024-11-13 12:59:49,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 12:59:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704902267] [2024-11-13 12:59:49,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:59:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:59:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:59:49,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:59:49,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 12:59:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:59:49,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 12:59:49,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:59:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 12:59:50,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:59:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 12:59:58,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 12:59:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704902267] [2024-11-13 12:59:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704902267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:59:58,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:59:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 76 [2024-11-13 12:59:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423931859] [2024-11-13 12:59:58,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 12:59:58,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-13 12:59:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 12:59:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-13 12:59:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5429, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 12:59:58,618 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-13 13:00:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:02,119 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-11-13 13:00:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 13:00:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) Word has length 89 [2024-11-13 13:00:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:02,121 INFO L225 Difference]: With dead ends: 64 [2024-11-13 13:00:02,121 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 13:00:02,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=861, Invalid=10269, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 13:00:02,125 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 172 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:02,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 732 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 13:00:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 13:00:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-13 13:00:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 13:00:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2024-11-13 13:00:02,135 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2024-11-13 13:00:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:02,135 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2024-11-13 13:00:02,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-13 13:00:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2024-11-13 13:00:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 13:00:02,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:02,137 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:02,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:00:02,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:02,338 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:02,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1760839668, now seen corresponding path program 8 times [2024-11-13 13:00:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:00:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346845978] [2024-11-13 13:00:02,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:00:02,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:00:02,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:00:02,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:00:02,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:00:02,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:00:02,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 13:00:02,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:00:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-13 13:00:03,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:00:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:00:15,884 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:00:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346845978] [2024-11-13 13:00:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346845978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:00:15,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:00:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 51] total 86 [2024-11-13 13:00:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385031393] [2024-11-13 13:00:15,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:00:15,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-13 13:00:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:00:15,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-13 13:00:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7001, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 13:00:15,891 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-13 13:00:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:21,323 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-13 13:00:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:00:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) Word has length 101 [2024-11-13 13:00:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:21,326 INFO L225 Difference]: With dead ends: 70 [2024-11-13 13:00:21,326 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 13:00:21,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1047, Invalid=13233, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 13:00:21,330 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 358 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:21,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 919 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 13:00:21,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 13:00:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-13 13:00:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 44 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-13 13:00:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-11-13 13:00:21,343 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2024-11-13 13:00:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:21,343 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-11-13 13:00:21,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-13 13:00:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-11-13 13:00:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 13:00:21,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:21,346 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:21,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:00:21,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:21,547 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:21,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1211116620, now seen corresponding path program 9 times [2024-11-13 13:00:21,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:00:21,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565351946] [2024-11-13 13:00:21,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:00:21,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:21,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:00:21,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:00:21,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:00:21,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-13 13:00:21,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:00:21,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-13 13:00:21,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:00:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-13 13:00:23,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:00:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 13:00:38,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:00:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565351946] [2024-11-13 13:00:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565351946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:00:38,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:00:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 57] total 96 [2024-11-13 13:00:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687064181] [2024-11-13 13:00:38,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:00:38,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-13 13:00:38,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:00:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-13 13:00:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8773, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 13:00:38,759 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-13 13:00:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:44,406 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-11-13 13:00:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 13:00:44,407 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) Word has length 113 [2024-11-13 13:00:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:44,408 INFO L225 Difference]: With dead ends: 76 [2024-11-13 13:00:44,408 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 13:00:44,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1249, Invalid=16573, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 13:00:44,412 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 402 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:44,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1122 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 13:00:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 13:00:44,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-13 13:00:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-13 13:00:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-11-13 13:00:44,428 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 113 [2024-11-13 13:00:44,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:44,429 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-11-13 13:00:44,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-13 13:00:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-11-13 13:00:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 13:00:44,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:44,431 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:44,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:00:44,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:44,631 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:44,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash 685850484, now seen corresponding path program 10 times [2024-11-13 13:00:44,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:00:44,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530674377] [2024-11-13 13:00:44,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:00:44,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:00:44,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:00:44,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:00:44,759 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:00:44,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:00:44,762 WARN L253 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-13 13:00:44,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:00:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-13 13:00:46,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 13:01:05,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:01:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530674377] [2024-11-13 13:01:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530674377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:05,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:01:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 63] total 106 [2024-11-13 13:01:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941121665] [2024-11-13 13:01:05,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-13 13:01:05,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:01:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-13 13:01:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=10745, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 13:01:05,035 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-13 13:01:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:12,231 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2024-11-13 13:01:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 13:01:12,232 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) Word has length 125 [2024-11-13 13:01:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:12,233 INFO L225 Difference]: With dead ends: 82 [2024-11-13 13:01:12,233 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 13:01:12,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1467, Invalid=20289, Unknown=0, NotChecked=0, Total=21756 [2024-11-13 13:01:12,236 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 806 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:12,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1450 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 13:01:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 13:01:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-13 13:01:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-13 13:01:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-13 13:01:12,247 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 125 [2024-11-13 13:01:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:12,247 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-13 13:01:12,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-13 13:01:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-13 13:01:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-13 13:01:12,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:12,250 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:12,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:01:12,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:12,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:12,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2059891916, now seen corresponding path program 11 times [2024-11-13 13:01:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:01:12,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819062590] [2024-11-13 13:01:12,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:01:12,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:12,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:12,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:12,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:01:12,682 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-13 13:01:12,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:01:12,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 13:01:12,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-13 13:01:14,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 13:01:37,727 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:01:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819062590] [2024-11-13 13:01:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819062590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:37,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:01:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 69] total 116 [2024-11-13 13:01:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139337018] [2024-11-13 13:01:37,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:37,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-13 13:01:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:01:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-13 13:01:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=12917, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 13:01:37,733 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2024-11-13 13:01:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:46,448 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2024-11-13 13:01:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:01:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) Word has length 137 [2024-11-13 13:01:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:46,450 INFO L225 Difference]: With dead ends: 88 [2024-11-13 13:01:46,450 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:01:46,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=1701, Invalid=24381, Unknown=0, NotChecked=0, Total=26082 [2024-11-13 13:01:46,453 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 268 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 3168 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:46,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1710 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3168 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 13:01:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:01:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-13 13:01:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.018181818181818) internal successors, (56), 56 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 13:01:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2024-11-13 13:01:46,466 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 137 [2024-11-13 13:01:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:46,466 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2024-11-13 13:01:46,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2024-11-13 13:01:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2024-11-13 13:01:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-13 13:01:46,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:46,468 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:46,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 13:01:46,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:46,669 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:46,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -706365708, now seen corresponding path program 12 times [2024-11-13 13:01:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:01:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543657668] [2024-11-13 13:01:46,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:01:46,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:46,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:46,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:01:46,970 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-13 13:01:46,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:01:46,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 13:01:46,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-11-13 13:01:49,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 13:02:17,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:02:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543657668] [2024-11-13 13:02:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543657668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:17,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:02:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 75] total 126 [2024-11-13 13:02:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206253126] [2024-11-13 13:02:17,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:17,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-13 13:02:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:02:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-13 13:02:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=15289, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 13:02:17,988 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2024-11-13 13:02:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:02:29,795 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2024-11-13 13:02:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 13:02:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) Word has length 149 [2024-11-13 13:02:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:02:29,798 INFO L225 Difference]: With dead ends: 94 [2024-11-13 13:02:29,798 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 13:02:29,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4050 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=1951, Invalid=28849, Unknown=0, NotChecked=0, Total=30800 [2024-11-13 13:02:29,802 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 534 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 4037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:02:29,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1804 Invalid, 4037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3785 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 13:02:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 13:02:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 13:02:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 60 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-13 13:02:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-13 13:02:29,819 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 149 [2024-11-13 13:02:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:02:29,820 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-13 13:02:29,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2024-11-13 13:02:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-13 13:02:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-13 13:02:29,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:02:29,823 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:29,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:02:30,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:30,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:02:30,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1677247156, now seen corresponding path program 13 times [2024-11-13 13:02:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:02:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147247514] [2024-11-13 13:02:30,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:02:30,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:30,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:30,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:30,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:02:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:30,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 13:02:30,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-13 13:02:32,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:03:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-13 13:03:04,724 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:03:04,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147247514] [2024-11-13 13:03:04,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147247514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:03:04,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:03:04,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 81] total 136 [2024-11-13 13:03:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645568044] [2024-11-13 13:03:04,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:03:04,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-11-13 13:03:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:03:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-11-13 13:03:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=17861, Unknown=0, NotChecked=0, Total=18360 [2024-11-13 13:03:04,728 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2024-11-13 13:03:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:03:17,014 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2024-11-13 13:03:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 13:03:17,015 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) Word has length 161 [2024-11-13 13:03:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:03:17,016 INFO L225 Difference]: With dead ends: 100 [2024-11-13 13:03:17,016 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 13:03:17,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4725 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=2217, Invalid=33693, Unknown=0, NotChecked=0, Total=35910 [2024-11-13 13:03:17,018 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1358 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 4158 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 4835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 4158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:03:17,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 2259 Invalid, 4835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 4158 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 13:03:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 13:03:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 13:03:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 64 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (29), 28 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-13 13:03:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-11-13 13:03:17,030 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 161 [2024-11-13 13:03:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:03:17,030 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-11-13 13:03:17,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2024-11-13 13:03:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-11-13 13:03:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-13 13:03:17,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:03:17,032 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:03:17,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 13:03:17,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:03:17,233 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:03:17,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:03:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1199460748, now seen corresponding path program 14 times [2024-11-13 13:03:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:03:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245719655] [2024-11-13 13:03:17,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:03:17,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:03:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:03:17,236 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:03:17,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:03:17,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:03:17,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:03:17,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 13:03:17,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:03:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-11-13 13:03:20,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:03:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1836 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-13 13:03:58,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:03:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245719655] [2024-11-13 13:03:58,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245719655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:03:58,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:03:58,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 87] total 146 [2024-11-13 13:03:58,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271623522] [2024-11-13 13:03:58,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:03:58,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-13 13:03:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:03:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-13 13:03:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=20633, Unknown=0, NotChecked=0, Total=21170 [2024-11-13 13:03:58,316 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2024-11-13 13:04:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:04:11,835 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2024-11-13 13:04:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-13 13:04:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) Word has length 173 [2024-11-13 13:04:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:04:11,837 INFO L225 Difference]: With dead ends: 106 [2024-11-13 13:04:11,837 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 13:04:11,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=2499, Invalid=38913, Unknown=0, NotChecked=0, Total=41412 [2024-11-13 13:04:11,839 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 788 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 5086 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 5464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 5086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:04:11,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2447 Invalid, 5464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 5086 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-13 13:04:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 13:04:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-13 13:04:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 68 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (31), 30 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-13 13:04:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-11-13 13:04:11,849 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 173 [2024-11-13 13:04:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:04:11,850 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-11-13 13:04:11,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2024-11-13 13:04:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2024-11-13 13:04:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 13:04:11,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:04:11,851 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:04:11,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:04:12,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:04:12,052 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:04:12,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:04:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1668253132, now seen corresponding path program 15 times [2024-11-13 13:04:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:04:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558209758] [2024-11-13 13:04:12,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:04:12,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:04:12,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:04:12,054 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:04:12,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:04:12,459 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-13 13:04:12,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:04:12,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-13 13:04:12,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:04:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-11-13 13:04:15,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:04:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 2117 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-13 13:04:59,518 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:04:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558209758] [2024-11-13 13:04:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558209758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:04:59,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:04:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 93] total 156 [2024-11-13 13:04:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851935417] [2024-11-13 13:04:59,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:04:59,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-11-13 13:04:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:04:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-11-13 13:04:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=23605, Unknown=0, NotChecked=0, Total=24180 [2024-11-13 13:04:59,522 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) [2024-11-13 13:05:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:05:17,316 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2024-11-13 13:05:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-13 13:05:17,317 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) Word has length 185 [2024-11-13 13:05:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:05:17,319 INFO L225 Difference]: With dead ends: 112 [2024-11-13 13:05:17,319 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 13:05:17,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6231 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=2797, Invalid=44509, Unknown=0, NotChecked=0, Total=47306 [2024-11-13 13:05:17,330 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1386 mSDsluCounter, 3131 mSDsCounter, 0 mSdLazyCounter, 6250 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 6934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 6250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:05:17,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 3168 Invalid, 6934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 6250 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 13:05:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 13:05:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-13 13:05:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 72 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-13 13:05:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2024-11-13 13:05:17,359 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 185 [2024-11-13 13:05:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:05:17,362 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2024-11-13 13:05:17,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) [2024-11-13 13:05:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2024-11-13 13:05:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 13:05:17,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:05:17,364 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:05:17,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:05:17,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:05:17,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:05:17,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:05:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash 422913524, now seen corresponding path program 16 times [2024-11-13 13:05:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:05:17,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002317241] [2024-11-13 13:05:17,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:05:17,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:05:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:05:17,574 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:05:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:05:17,956 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:05:17,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-13 13:05:17,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:05:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:05:18,120 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 13:05:18,121 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:05:18,122 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:05:18,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 13:05:18,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:05:18,332 INFO L407 BasicCegarLoop]: Path program histogram: [16, 1] [2024-11-13 13:05:18,406 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:05:18,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:05:18 BoogieIcfgContainer [2024-11-13 13:05:18,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:05:18,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:05:18,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:05:18,413 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:05:18,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:59:14" (3/4) ... [2024-11-13 13:05:18,417 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 13:05:18,504 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aef9b1d-1a05-4509-9c4b-bceba2ab3f9b/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:05:18,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:05:18,505 INFO L158 Benchmark]: Toolchain (without parser) took 365003.38ms. Allocated memory was 117.4MB in the beginning and 260.0MB in the end (delta: 142.6MB). Free memory was 92.6MB in the beginning and 162.3MB in the end (delta: -69.8MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2024-11-13 13:05:18,505 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:05:18,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.87ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:05:18,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.13ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:05:18,507 INFO L158 Benchmark]: Boogie Preprocessor took 46.24ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:05:18,507 INFO L158 Benchmark]: RCFGBuilder took 318.95ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 68.6MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:05:18,508 INFO L158 Benchmark]: TraceAbstraction took 364196.17ms. Allocated memory was 117.4MB in the beginning and 260.0MB in the end (delta: 142.6MB). Free memory was 68.0MB in the beginning and 165.3MB in the end (delta: -97.3MB). Peak memory consumption was 179.1MB. Max. memory is 16.1GB. [2024-11-13 13:05:18,508 INFO L158 Benchmark]: Witness Printer took 91.21ms. Allocated memory is still 260.0MB. Free memory was 165.3MB in the beginning and 162.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:05:18,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.87ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.13ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.24ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.95ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 68.6MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 364196.17ms. Allocated memory was 117.4MB in the beginning and 260.0MB in the end (delta: 142.6MB). Free memory was 68.0MB in the beginning and 165.3MB in the end (delta: -97.3MB). Peak memory consumption was 179.1MB. Max. memory is 16.1GB. * Witness Printer took 91.21ms. Allocated memory is still 260.0MB. Free memory was 165.3MB in the beginning and 162.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 36]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=32] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=32] [L19] COND FALSE !(n == 1) VAL [\old(n)=32, n=32] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=31] [L19] COND FALSE !(n == 1) VAL [\old(n)=31, n=31] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=30] [L19] COND FALSE !(n == 1) VAL [\old(n)=30, n=30] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=29] [L19] COND FALSE !(n == 1) VAL [\old(n)=29, n=29] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=28] [L19] COND FALSE !(n == 1) VAL [\old(n)=28, n=28] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=27] [L19] COND FALSE !(n == 1) VAL [\old(n)=27, n=27] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=26] [L19] COND FALSE !(n == 1) VAL [\old(n)=26, n=26] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=25] [L19] COND FALSE !(n == 1) VAL [\old(n)=25, n=25] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=24] [L19] COND FALSE !(n == 1) VAL [\old(n)=24, n=24] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=23] [L19] COND FALSE !(n == 1) VAL [\old(n)=23, n=23] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=22] [L19] COND FALSE !(n == 1) VAL [\old(n)=22, n=22] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=21] [L19] COND FALSE !(n == 1) VAL [\old(n)=21, n=21] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=20] [L19] COND FALSE !(n == 1) VAL [\old(n)=20, n=20] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=19] [L19] COND FALSE !(n == 1) VAL [\old(n)=19, n=19] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=18] [L19] COND FALSE !(n == 1) VAL [\old(n)=18, n=18] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=17] [L19] COND FALSE !(n == 1) VAL [\old(n)=17, n=17] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=16] [L19] COND FALSE !(n == 1) VAL [\old(n)=16, n=16] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=15] [L19] COND FALSE !(n == 1) VAL [\old(n)=15, n=15] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=14] [L19] COND FALSE !(n == 1) VAL [\old(n)=14, n=14] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=13] [L19] COND FALSE !(n == 1) VAL [\old(n)=13, n=13] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=12] [L19] COND FALSE !(n == 1) VAL [\old(n)=12, n=12] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=11] [L19] COND FALSE !(n == 1) VAL [\old(n)=11, n=11] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=10] [L19] COND FALSE !(n == 1) VAL [\old(n)=10, n=10] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=9] [L19] COND FALSE !(n == 1) VAL [\old(n)=9, n=9] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=8] [L19] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=7] [L19] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=6] [L19] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=5] [L19] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=4] [L19] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=3] [L19] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1] [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=2, n=2] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=3, n=3] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=4, n=4] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=5, n=5] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=6, n=6] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=7, n=7] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=8, n=8] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=9, n=9] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=10, n=10] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=11, n=11] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=12, n=12] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=13, n=13] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=14, n=14] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=15, n=15] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=16, n=16] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=17, n=17] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=18, n=18] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=19, n=19] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=20, n=20] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=21, n=21] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=22, n=22] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=23, n=23] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=24, n=24] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=25, n=25] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=26, n=26] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=27, n=27] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=28, n=28] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=29, n=29] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=30, n=30] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=31, n=31] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=32, n=32] [L22] return 2 * (hanoi(n-1)) + 1; [L31] RET, EXPR hanoi(n) VAL [n=32] [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1<