./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-1.i --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_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/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_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/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_1462dacc-90d7-4dde-8674-0d04f2c4458b/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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:28:47,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:28:47,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:28:47,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:28:47,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:28:47,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:28:47,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:28:47,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:28:47,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:28:47,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:28:47,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:28:47,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:28:47,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:28:47,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:28:47,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:28:47,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:28:47,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:28:47,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:28:47,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:28:47,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:28:47,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:28:47,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:28:47,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:28:47,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:28:47,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:28:47,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:28:47,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:28:47,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:28:47,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:28:47,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:28:47,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:28:47,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:28:47,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:28:47,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:28:47,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:28:47,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:28:47,264 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/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 -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2024-11-13 13:28:47,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:28:47,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:28:47,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:28:47,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:28:47,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:28:47,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector/byte_add_1-1.i Unable to find full path for "g++" [2024-11-13 13:28:49,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:28:50,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:28:50,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i [2024-11-13 13:28:50,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/93866a7e3/c9273d04d98c4bc6aebaa390581f5b4a/FLAG58342bc7d [2024-11-13 13:28:50,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/93866a7e3/c9273d04d98c4bc6aebaa390581f5b4a [2024-11-13 13:28:50,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:28:50,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:28:50,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:28:50,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:28:50,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:28:50,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5f535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50, skipping insertion in model container [2024-11-13 13:28:50,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:28:50,546 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-13 13:28:50,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:28:50,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:28:50,672 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-13 13:28:50,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:28:50,738 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:28:50,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50 WrapperNode [2024-11-13 13:28:50,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:28:50,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:28:50,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:28:50,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:28:50,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,808 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2024-11-13 13:28:50,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:28:50,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:28:50,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:28:50,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:28:50,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,839 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 13:28:50,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:28:50,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:28:50,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:28:50,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:28:50,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (1/1) ... [2024-11-13 13:28:50,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:28:50,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:50,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:28:50,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:28:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:28:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:28:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:28:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:28:51,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:28:51,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:28:51,610 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-13 13:28:51,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:28:51,622 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:28:51,623 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:28:51,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:28:51 BoogieIcfgContainer [2024-11-13 13:28:51,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:28:51,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:28:51,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:28:51,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:28:51,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:28:50" (1/3) ... [2024-11-13 13:28:51,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155f5383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:28:51, skipping insertion in model container [2024-11-13 13:28:51,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50" (2/3) ... [2024-11-13 13:28:51,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155f5383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:28:51, skipping insertion in model container [2024-11-13 13:28:51,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:28:51" (3/3) ... [2024-11-13 13:28:51,639 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-13 13:28:51,659 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:28:51,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG byte_add_1-1.i that has 1 procedures, 51 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:28:51,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:28:51,743 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;@36f0a353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:28:51,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:28:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:28:51,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:51,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:51,757 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:51,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash -643229382, now seen corresponding path program 1 times [2024-11-13 13:28:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095957189] [2024-11-13 13:28:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:52,028 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 13:28:52,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:52,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095957189] [2024-11-13 13:28:52,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095957189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:52,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:52,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:28:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71234986] [2024-11-13 13:28:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:52,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:28:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:28:52,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:28:52,062 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 50 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:52,079 INFO L93 Difference]: Finished difference Result 75 states and 122 transitions. [2024-11-13 13:28:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:28:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 13:28:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:52,089 INFO L225 Difference]: With dead ends: 75 [2024-11-13 13:28:52,090 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 13:28:52,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:28:52,096 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:52,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:28:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 13:28:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-13 13:28:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2024-11-13 13:28:52,139 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 15 [2024-11-13 13:28:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:52,140 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2024-11-13 13:28:52,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2024-11-13 13:28:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:28:52,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:52,142 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:52,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:28:52,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:52,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 264360600, now seen corresponding path program 1 times [2024-11-13 13:28:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274700065] [2024-11-13 13:28:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:52,459 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 13:28:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274700065] [2024-11-13 13:28:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274700065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:52,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:28:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556536587] [2024-11-13 13:28:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:52,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:28:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:28:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:52,466 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:52,764 INFO L93 Difference]: Finished difference Result 107 states and 186 transitions. [2024-11-13 13:28:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 13:28:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:52,767 INFO L225 Difference]: With dead ends: 107 [2024-11-13 13:28:52,768 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 13:28:52,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:52,770 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:52,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 13:28:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-13 13:28:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 67 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 104 transitions. [2024-11-13 13:28:52,786 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 104 transitions. Word has length 15 [2024-11-13 13:28:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:52,787 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 104 transitions. [2024-11-13 13:28:52,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 104 transitions. [2024-11-13 13:28:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:28:52,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:52,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:52,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:28:52,788 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:52,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415229, now seen corresponding path program 1 times [2024-11-13 13:28:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:52,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104911434] [2024-11-13 13:28:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:52,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104911434] [2024-11-13 13:28:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104911434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:28:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227524307] [2024-11-13 13:28:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:53,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:53,057 INFO L87 Difference]: Start difference. First operand 68 states and 104 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:53,446 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2024-11-13 13:28:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:28:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-13 13:28:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:53,448 INFO L225 Difference]: With dead ends: 164 [2024-11-13 13:28:53,448 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 13:28:53,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:28:53,453 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 92 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:53,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 116 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 13:28:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2024-11-13 13:28:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 139 transitions. [2024-11-13 13:28:53,464 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 139 transitions. Word has length 21 [2024-11-13 13:28:53,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:53,465 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 139 transitions. [2024-11-13 13:28:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 139 transitions. [2024-11-13 13:28:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:28:53,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:53,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:53,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:28:53,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:53,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -991010190, now seen corresponding path program 1 times [2024-11-13 13:28:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63823515] [2024-11-13 13:28:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:28:53,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:53,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63823515] [2024-11-13 13:28:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63823515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:53,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:53,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:28:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364301107] [2024-11-13 13:28:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:53,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:53,804 INFO L87 Difference]: Start difference. First operand 91 states and 139 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:54,096 INFO L93 Difference]: Finished difference Result 234 states and 354 transitions. [2024-11-13 13:28:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 13:28:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:54,098 INFO L225 Difference]: With dead ends: 234 [2024-11-13 13:28:54,098 INFO L226 Difference]: Without dead ends: 156 [2024-11-13 13:28:54,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:28:54,099 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 70 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:54,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-13 13:28:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 99. [2024-11-13 13:28:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.510204081632653) internal successors, (148), 98 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions. [2024-11-13 13:28:54,112 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 27 [2024-11-13 13:28:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:54,112 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions. [2024-11-13 13:28:54,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions. [2024-11-13 13:28:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:28:54,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:54,114 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:54,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:28:54,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:54,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1387372287, now seen corresponding path program 1 times [2024-11-13 13:28:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:54,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518377857] [2024-11-13 13:28:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:28:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518377857] [2024-11-13 13:28:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518377857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:28:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852710415] [2024-11-13 13:28:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:54,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:54,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:54,339 INFO L87 Difference]: Start difference. First operand 99 states and 148 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:54,574 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2024-11-13 13:28:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-13 13:28:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:54,576 INFO L225 Difference]: With dead ends: 255 [2024-11-13 13:28:54,576 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 13:28:54,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:28:54,579 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 74 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:54,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 188 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:28:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 13:28:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 109. [2024-11-13 13:28:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 108 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 161 transitions. [2024-11-13 13:28:54,604 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 161 transitions. Word has length 28 [2024-11-13 13:28:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:54,606 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 161 transitions. [2024-11-13 13:28:54,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 161 transitions. [2024-11-13 13:28:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:28:54,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:54,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:54,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:28:54,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:54,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash 213151683, now seen corresponding path program 1 times [2024-11-13 13:28:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336044550] [2024-11-13 13:28:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:54,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336044550] [2024-11-13 13:28:54,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336044550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:54,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265401908] [2024-11-13 13:28:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:54,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:54,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:54,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:28:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:54,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:28:54,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:28:54,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:28:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265401908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:54,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:28:54,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-13 13:28:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982145072] [2024-11-13 13:28:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:54,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:28:54,978 INFO L87 Difference]: Start difference. First operand 109 states and 161 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:55,276 INFO L93 Difference]: Finished difference Result 230 states and 363 transitions. [2024-11-13 13:28:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-13 13:28:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:55,278 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:28:55,278 INFO L226 Difference]: Without dead ends: 154 [2024-11-13 13:28:55,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:28:55,282 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:55,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 151 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-13 13:28:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2024-11-13 13:28:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2024-11-13 13:28:55,308 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 29 [2024-11-13 13:28:55,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:55,308 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2024-11-13 13:28:55,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2024-11-13 13:28:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:28:55,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:55,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:55,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:28:55,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:28:55,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:55,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1627881454, now seen corresponding path program 1 times [2024-11-13 13:28:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784891915] [2024-11-13 13:28:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:55,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:55,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:55,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784891915] [2024-11-13 13:28:55,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784891915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:55,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141573526] [2024-11-13 13:28:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:55,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:55,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:55,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:55,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:28:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:55,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:28:55,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:28:56,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:28:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141573526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:28:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-13 13:28:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707260799] [2024-11-13 13:28:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:56,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:28:56,031 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:56,331 INFO L93 Difference]: Finished difference Result 288 states and 427 transitions. [2024-11-13 13:28:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 13:28:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:56,334 INFO L225 Difference]: With dead ends: 288 [2024-11-13 13:28:56,334 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 13:28:56,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:28:56,338 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:56,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 151 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 13:28:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-11-13 13:28:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 13:28:56,361 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 35 [2024-11-13 13:28:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:56,361 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 13:28:56,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 13:28:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:28:56,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:56,363 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:56,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:28:56,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:56,564 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:56,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1924204317, now seen corresponding path program 1 times [2024-11-13 13:28:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074195543] [2024-11-13 13:28:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:28:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074195543] [2024-11-13 13:28:56,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074195543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:56,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:28:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886286011] [2024-11-13 13:28:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:56,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:28:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:28:56,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:28:56,893 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:57,295 INFO L93 Difference]: Finished difference Result 516 states and 714 transitions. [2024-11-13 13:28:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:28:57,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 13:28:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:57,299 INFO L225 Difference]: With dead ends: 516 [2024-11-13 13:28:57,299 INFO L226 Difference]: Without dead ends: 385 [2024-11-13 13:28:57,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:28:57,301 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 152 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:57,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 307 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-13 13:28:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 161. [2024-11-13 13:28:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 13:28:57,330 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 41 [2024-11-13 13:28:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:57,333 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 13:28:57,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 13:28:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 13:28:57,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:57,340 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:57,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:28:57,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:57,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -477282298, now seen corresponding path program 1 times [2024-11-13 13:28:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374792975] [2024-11-13 13:28:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:28:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:57,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374792975] [2024-11-13 13:28:57,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374792975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:57,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:57,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:28:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207734092] [2024-11-13 13:28:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:57,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:28:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:28:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:57,641 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:57,662 INFO L93 Difference]: Finished difference Result 305 states and 420 transitions. [2024-11-13 13:28:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:57,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-13 13:28:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:57,664 INFO L225 Difference]: With dead ends: 305 [2024-11-13 13:28:57,664 INFO L226 Difference]: Without dead ends: 147 [2024-11-13 13:28:57,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:57,666 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 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 13:28:57,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:28:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-13 13:28:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-13 13:28:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.36986301369863) internal successors, (200), 146 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 200 transitions. [2024-11-13 13:28:57,683 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 200 transitions. Word has length 42 [2024-11-13 13:28:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:57,684 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 200 transitions. [2024-11-13 13:28:57,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 200 transitions. [2024-11-13 13:28:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:28:57,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:57,688 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:57,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:28:57,688 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:57,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1275560698, now seen corresponding path program 1 times [2024-11-13 13:28:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:57,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927565857] [2024-11-13 13:28:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:57,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:28:58,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927565857] [2024-11-13 13:28:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927565857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:28:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27529877] [2024-11-13 13:28:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:58,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:28:58,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:28:58,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:28:58,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:28:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:58,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:28:58,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:28:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:28:58,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:28:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27529877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:28:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-13 13:28:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107781429] [2024-11-13 13:28:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:58,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:28:58,259 INFO L87 Difference]: Start difference. First operand 147 states and 200 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:58,420 INFO L93 Difference]: Finished difference Result 288 states and 400 transitions. [2024-11-13 13:28:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:28:58,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-13 13:28:58,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:58,422 INFO L225 Difference]: With dead ends: 288 [2024-11-13 13:28:58,422 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 13:28:58,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:28:58,425 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:58,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 107 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:28:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 13:28:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2024-11-13 13:28:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 127 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2024-11-13 13:28:58,437 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 47 [2024-11-13 13:28:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:58,439 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2024-11-13 13:28:58,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2024-11-13 13:28:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:28:58,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:58,441 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:58,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:28:58,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:28:58,642 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:58,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1552791319, now seen corresponding path program 1 times [2024-11-13 13:28:58,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:58,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986448342] [2024-11-13 13:28:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 13:28:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986448342] [2024-11-13 13:28:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986448342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:28:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495347212] [2024-11-13 13:28:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:58,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:28:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:28:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:28:58,899 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:28:59,255 INFO L93 Difference]: Finished difference Result 453 states and 589 transitions. [2024-11-13 13:28:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:28:59,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 13:28:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:28:59,259 INFO L225 Difference]: With dead ends: 453 [2024-11-13 13:28:59,260 INFO L226 Difference]: Without dead ends: 344 [2024-11-13 13:28:59,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:28:59,261 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 125 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:28:59,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 229 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:28:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-13 13:28:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 128. [2024-11-13 13:28:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 127 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2024-11-13 13:28:59,280 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 68 [2024-11-13 13:28:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:28:59,280 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2024-11-13 13:28:59,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2024-11-13 13:28:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 13:28:59,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:28:59,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:59,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:28:59,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:28:59,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash -756830241, now seen corresponding path program 1 times [2024-11-13 13:28:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:59,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073243043] [2024-11-13 13:28:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:59,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 13:28:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073243043] [2024-11-13 13:28:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073243043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:59,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:28:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686199514] [2024-11-13 13:28:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:59,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:28:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:28:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:28:59,584 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:00,091 INFO L93 Difference]: Finished difference Result 565 states and 732 transitions. [2024-11-13 13:29:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:29:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-13 13:29:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:00,094 INFO L225 Difference]: With dead ends: 565 [2024-11-13 13:29:00,094 INFO L226 Difference]: Without dead ends: 456 [2024-11-13 13:29:00,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:29:00,096 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 188 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:00,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 353 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:29:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-13 13:29:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 128. [2024-11-13 13:29:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 127 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2024-11-13 13:29:00,109 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 69 [2024-11-13 13:29:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:00,109 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2024-11-13 13:29:00,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2024-11-13 13:29:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 13:29:00,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:00,111 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:00,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:29:00,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:00,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash -339433635, now seen corresponding path program 1 times [2024-11-13 13:29:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:00,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388334223] [2024-11-13 13:29:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:29:00,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388334223] [2024-11-13 13:29:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388334223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138937056] [2024-11-13 13:29:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:00,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:00,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:29:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:00,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:29:00,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 13:29:01,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138937056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:01,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:29:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-13 13:29:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547017197] [2024-11-13 13:29:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:01,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:29:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:29:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:29:01,015 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:01,231 INFO L93 Difference]: Finished difference Result 529 states and 691 transitions. [2024-11-13 13:29:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:29:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-13 13:29:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:01,234 INFO L225 Difference]: With dead ends: 529 [2024-11-13 13:29:01,234 INFO L226 Difference]: Without dead ends: 416 [2024-11-13 13:29:01,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:29:01,237 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 148 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:01,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 530 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:29:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-13 13:29:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 205. [2024-11-13 13:29:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 204 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 265 transitions. [2024-11-13 13:29:01,260 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 265 transitions. Word has length 69 [2024-11-13 13:29:01,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:01,260 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 265 transitions. [2024-11-13 13:29:01,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 265 transitions. [2024-11-13 13:29:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 13:29:01,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:01,261 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:01,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:29:01,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:29:01,465 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:01,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 888669372, now seen corresponding path program 1 times [2024-11-13 13:29:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189345846] [2024-11-13 13:29:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:29:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189345846] [2024-11-13 13:29:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189345846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555097766] [2024-11-13 13:29:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:01,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:01,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:01,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:29:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:01,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:29:01,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:29:01,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555097766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:01,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:29:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-13 13:29:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161999774] [2024-11-13 13:29:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:01,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:29:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:29:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:29:01,947 INFO L87 Difference]: Start difference. First operand 205 states and 265 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:02,142 INFO L93 Difference]: Finished difference Result 426 states and 553 transitions. [2024-11-13 13:29:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:29:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-13 13:29:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:02,144 INFO L225 Difference]: With dead ends: 426 [2024-11-13 13:29:02,146 INFO L226 Difference]: Without dead ends: 317 [2024-11-13 13:29:02,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:29:02,147 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:02,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 130 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:29:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-13 13:29:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 306. [2024-11-13 13:29:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.2950819672131149) internal successors, (395), 305 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 395 transitions. [2024-11-13 13:29:02,181 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 395 transitions. Word has length 71 [2024-11-13 13:29:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:02,181 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 395 transitions. [2024-11-13 13:29:02,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 395 transitions. [2024-11-13 13:29:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 13:29:02,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:02,184 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:02,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:29:02,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:02,384 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:02,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash 731883723, now seen corresponding path program 1 times [2024-11-13 13:29:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:02,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444711114] [2024-11-13 13:29:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:29:02,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:02,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444711114] [2024-11-13 13:29:02,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444711114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670869801] [2024-11-13 13:29:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:02,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:02,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:02,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:02,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:29:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:02,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:29:02,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 13:29:02,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:29:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670869801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:03,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 17 [2024-11-13 13:29:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213357842] [2024-11-13 13:29:03,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:03,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:29:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:29:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:29:03,289 INFO L87 Difference]: Start difference. First operand 306 states and 395 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:05,446 INFO L93 Difference]: Finished difference Result 1328 states and 1837 transitions. [2024-11-13 13:29:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 13:29:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 13:29:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:05,451 INFO L225 Difference]: With dead ends: 1328 [2024-11-13 13:29:05,452 INFO L226 Difference]: Without dead ends: 990 [2024-11-13 13:29:05,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=586, Invalid=1220, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:29:05,454 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1032 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:05,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 259 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:29:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-13 13:29:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 868. [2024-11-13 13:29:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.3713956170703576) internal successors, (1189), 867 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1189 transitions. [2024-11-13 13:29:05,549 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1189 transitions. Word has length 72 [2024-11-13 13:29:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:05,549 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1189 transitions. [2024-11-13 13:29:05,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1189 transitions. [2024-11-13 13:29:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:29:05,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:05,554 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:05,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:29:05,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:05,755 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1773733393, now seen corresponding path program 1 times [2024-11-13 13:29:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637569472] [2024-11-13 13:29:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:29:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:06,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637569472] [2024-11-13 13:29:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637569472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:06,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889010335] [2024-11-13 13:29:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:06,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:06,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:06,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:06,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:29:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:06,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:29:06,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:29:07,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:29:07,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889010335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:07,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:07,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-13 13:29:07,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349176006] [2024-11-13 13:29:07,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:07,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:29:07,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:29:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:29:07,488 INFO L87 Difference]: Start difference. First operand 868 states and 1189 transitions. Second operand has 21 states, 21 states have (on average 9.80952380952381) internal successors, (206), 21 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:13,023 INFO L93 Difference]: Finished difference Result 7318 states and 9850 transitions. [2024-11-13 13:29:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-13 13:29:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.80952380952381) internal successors, (206), 21 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-13 13:29:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:13,050 INFO L225 Difference]: With dead ends: 7318 [2024-11-13 13:29:13,051 INFO L226 Difference]: Without dead ends: 6473 [2024-11-13 13:29:13,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4230 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2098, Invalid=10784, Unknown=0, NotChecked=0, Total=12882 [2024-11-13 13:29:13,060 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1090 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:13,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1525 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 13:29:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2024-11-13 13:29:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 2674. [2024-11-13 13:29:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.4399551066217733) internal successors, (3849), 2673 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3849 transitions. [2024-11-13 13:29:13,303 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3849 transitions. Word has length 73 [2024-11-13 13:29:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:13,303 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 3849 transitions. [2024-11-13 13:29:13,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.80952380952381) internal successors, (206), 21 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3849 transitions. [2024-11-13 13:29:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:29:13,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:13,307 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:13,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:29:13,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:29:13,507 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:13,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2111920612, now seen corresponding path program 1 times [2024-11-13 13:29:13,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:13,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628348012] [2024-11-13 13:29:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:29:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628348012] [2024-11-13 13:29:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628348012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319832782] [2024-11-13 13:29:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:13,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:13,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:13,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:29:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:14,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:29:14,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:29:14,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:29:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319832782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:14,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:14,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-13 13:29:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457114027] [2024-11-13 13:29:14,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:14,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:29:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:29:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:14,984 INFO L87 Difference]: Start difference. First operand 2674 states and 3849 transitions. Second operand has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:18,422 INFO L93 Difference]: Finished difference Result 15014 states and 20351 transitions. [2024-11-13 13:29:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 13:29:18,423 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 13:29:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:18,468 INFO L225 Difference]: With dead ends: 15014 [2024-11-13 13:29:18,469 INFO L226 Difference]: Without dead ends: 12363 [2024-11-13 13:29:18,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:29:18,477 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 794 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:18,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1127 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:29:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2024-11-13 13:29:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 3430. [2024-11-13 13:29:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3429 states have (on average 1.4453193350831146) internal successors, (4956), 3429 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4956 transitions. [2024-11-13 13:29:18,921 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4956 transitions. Word has length 74 [2024-11-13 13:29:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:18,921 INFO L471 AbstractCegarLoop]: Abstraction has 3430 states and 4956 transitions. [2024-11-13 13:29:18,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4956 transitions. [2024-11-13 13:29:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:29:18,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:18,925 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:18,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:29:19,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:19,126 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:19,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1908160690, now seen corresponding path program 1 times [2024-11-13 13:29:19,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:19,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710576547] [2024-11-13 13:29:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:29:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710576547] [2024-11-13 13:29:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710576547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439571552] [2024-11-13 13:29:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:20,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:20,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:20,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:20,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:29:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:20,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:29:20,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:29:21,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439571552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:21,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:29:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-13 13:29:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388257787] [2024-11-13 13:29:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:21,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:21,331 INFO L87 Difference]: Start difference. First operand 3430 states and 4956 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:21,679 INFO L93 Difference]: Finished difference Result 3452 states and 4986 transitions. [2024-11-13 13:29:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-13 13:29:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:21,691 INFO L225 Difference]: With dead ends: 3452 [2024-11-13 13:29:21,691 INFO L226 Difference]: Without dead ends: 3447 [2024-11-13 13:29:21,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:21,694 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:21,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 222 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2024-11-13 13:29:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3442. [2024-11-13 13:29:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3442 states, 3441 states have (on average 1.4455100261551874) internal successors, (4974), 3441 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3442 states to 3442 states and 4974 transitions. [2024-11-13 13:29:22,039 INFO L78 Accepts]: Start accepts. Automaton has 3442 states and 4974 transitions. Word has length 75 [2024-11-13 13:29:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:22,040 INFO L471 AbstractCegarLoop]: Abstraction has 3442 states and 4974 transitions. [2024-11-13 13:29:22,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3442 states and 4974 transitions. [2024-11-13 13:29:22,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:29:22,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:22,043 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:22,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:29:22,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:29:22,248 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:22,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1100378486, now seen corresponding path program 1 times [2024-11-13 13:29:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702964373] [2024-11-13 13:29:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:29:22,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:22,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702964373] [2024-11-13 13:29:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702964373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324975957] [2024-11-13 13:29:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:22,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:22,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:22,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:29:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:23,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:29:23,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:29:23,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:29:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324975957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:23,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-11-13 13:29:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835629874] [2024-11-13 13:29:23,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:23,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:29:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:29:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:29:23,907 INFO L87 Difference]: Start difference. First operand 3442 states and 4974 transitions. Second operand has 23 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:27,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:27,773 INFO L93 Difference]: Finished difference Result 10756 states and 15108 transitions. [2024-11-13 13:29:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 13:29:27,774 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-13 13:29:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:27,793 INFO L225 Difference]: With dead ends: 10756 [2024-11-13 13:29:27,793 INFO L226 Difference]: Without dead ends: 7337 [2024-11-13 13:29:27,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=3159, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 13:29:27,799 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 364 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:27,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 2793 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:29:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2024-11-13 13:29:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 3799. [2024-11-13 13:29:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 1.4660347551342812) internal successors, (5568), 3798 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 5568 transitions. [2024-11-13 13:29:28,219 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 5568 transitions. Word has length 75 [2024-11-13 13:29:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:28,219 INFO L471 AbstractCegarLoop]: Abstraction has 3799 states and 5568 transitions. [2024-11-13 13:29:28,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 5568 transitions. [2024-11-13 13:29:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:29:28,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:28,222 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:28,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:29:28,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:28,423 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:28,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1893891377, now seen corresponding path program 1 times [2024-11-13 13:29:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532422934] [2024-11-13 13:29:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 13:29:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532422934] [2024-11-13 13:29:29,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532422934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800262693] [2024-11-13 13:29:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:29,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:29,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:29,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:29:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:29,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:29:29,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 13:29:29,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 13:29:31,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800262693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:31,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:29:31,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 21 [2024-11-13 13:29:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287517676] [2024-11-13 13:29:31,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:31,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:29:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:29:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:29:31,115 INFO L87 Difference]: Start difference. First operand 3799 states and 5568 transitions. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:37,097 INFO L93 Difference]: Finished difference Result 13131 states and 18635 transitions. [2024-11-13 13:29:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 13:29:37,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:29:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:37,132 INFO L225 Difference]: With dead ends: 13131 [2024-11-13 13:29:37,132 INFO L226 Difference]: Without dead ends: 13105 [2024-11-13 13:29:37,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=822, Invalid=2718, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 13:29:37,136 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 506 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:37,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1027 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 13:29:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13105 states. [2024-11-13 13:29:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13105 to 7029. [2024-11-13 13:29:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7029 states, 7028 states have (on average 1.4759533295389868) internal successors, (10373), 7028 states have internal predecessors, (10373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 10373 transitions. [2024-11-13 13:29:38,118 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 10373 transitions. Word has length 77 [2024-11-13 13:29:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:38,118 INFO L471 AbstractCegarLoop]: Abstraction has 7029 states and 10373 transitions. [2024-11-13 13:29:38,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 10373 transitions. [2024-11-13 13:29:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:29:38,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:38,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:38,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:29:38,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:38,329 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:38,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1729081615, now seen corresponding path program 1 times [2024-11-13 13:29:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:38,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693271648] [2024-11-13 13:29:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:38,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:29:39,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693271648] [2024-11-13 13:29:39,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693271648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780000266] [2024-11-13 13:29:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:39,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:39,407 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:39,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:29:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:39,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:29:39,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 13:29:39,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:39,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780000266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:39,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:29:39,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-13 13:29:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985741089] [2024-11-13 13:29:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:39,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:39,851 INFO L87 Difference]: Start difference. First operand 7029 states and 10373 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:40,565 INFO L93 Difference]: Finished difference Result 7046 states and 10395 transitions. [2024-11-13 13:29:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:40,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:29:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:40,585 INFO L225 Difference]: With dead ends: 7046 [2024-11-13 13:29:40,585 INFO L226 Difference]: Without dead ends: 7034 [2024-11-13 13:29:40,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:40,589 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 2 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:40,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 230 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2024-11-13 13:29:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 7015. [2024-11-13 13:29:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 7014 states have (on average 1.4760479041916168) internal successors, (10353), 7014 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 10353 transitions. [2024-11-13 13:29:41,535 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 10353 transitions. Word has length 77 [2024-11-13 13:29:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:41,535 INFO L471 AbstractCegarLoop]: Abstraction has 7015 states and 10353 transitions. [2024-11-13 13:29:41,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 10353 transitions. [2024-11-13 13:29:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:29:41,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:41,539 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:41,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:29:41,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:41,740 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:41,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1460162291, now seen corresponding path program 1 times [2024-11-13 13:29:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013527113] [2024-11-13 13:29:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:29:41,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:29:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:29:41,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:29:41,894 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:29:41,899 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:29:41,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:29:41,904 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:41,993 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:29:41,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:29:41 BoogieIcfgContainer [2024-11-13 13:29:41,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:29:41,999 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:29:41,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:29:42,000 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:29:42,001 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:28:51" (3/4) ... [2024-11-13 13:29:42,003 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:29:42,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:29:42,006 INFO L158 Benchmark]: Toolchain (without parser) took 51712.79ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 106.3MB in the beginning and 480.4MB in the end (delta: -374.1MB). Peak memory consumption was 412.6MB. Max. memory is 16.1GB. [2024-11-13 13:29:42,006 INFO L158 Benchmark]: CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:29:42,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.51ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 93.0MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:29:42,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.06ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:29:42,008 INFO L158 Benchmark]: Boogie Preprocessor took 69.03ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 87.8MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:29:42,009 INFO L158 Benchmark]: RCFGBuilder took 744.65ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 66.4MB in the end (delta: 21.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:29:42,010 INFO L158 Benchmark]: TraceAbstraction took 50372.01ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 65.8MB in the beginning and 480.7MB in the end (delta: -414.9MB). Peak memory consumption was 370.6MB. Max. memory is 16.1GB. [2024-11-13 13:29:42,011 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 931.1MB. Free memory was 480.7MB in the beginning and 480.4MB in the end (delta: 239.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:29:42,012 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.51ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 93.0MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.06ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.03ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 87.8MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 744.65ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 66.4MB in the end (delta: 21.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 50372.01ms. Allocated memory was 142.6MB in the beginning and 931.1MB in the end (delta: 788.5MB). Free memory was 65.8MB in the beginning and 480.7MB in the end (delta: -414.9MB). Peak memory consumption was 370.6MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 931.1MB. Free memory was 480.7MB in the beginning and 480.4MB in the end (delta: 239.7kB). 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: 25]: 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 bitwiseOr at line 116, overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L126] b = __VERIFIER_nondet_uint() [L128] a = 234770789 [L130] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4] [L59] COND FALSE !(a3 == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4] [L68] nb = (unsigned char)4 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=4] [L69] COND TRUE b3 == (unsigned char)0 [L70] nb = nb - 1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=3] [L71] COND TRUE b2 == (unsigned char)0 [L72] nb = nb - 1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=2] [L73] COND TRUE b1 == (unsigned char)0 [L74] nb = nb - 1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, na=4, nb=1] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=0] [L83] COND TRUE i < na VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101] [L85] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101] [L86] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101] [L87] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101] [L89] COND TRUE i < nb VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=101] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256] [L91] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256] [L92] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256] [L93] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=0, na=4, nb=1, partial_sum=256] [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=1, i=1, na=4, nb=1, partial_sum=0, r0=0] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L83] COND TRUE i < na VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L84] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L85] COND TRUE i == (unsigned char)1 [L85] partial_sum = partial_sum + a1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L86] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L87] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L89] COND FALSE !(i < nb) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L83] COND TRUE i < na VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L84] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L85] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L86] COND TRUE i == (unsigned char)2 [L86] partial_sum = partial_sum + a2 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L87] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L89] COND FALSE !(i < nb) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L83] COND TRUE i < na VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L84] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L85] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L86] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L87] COND TRUE i == (unsigned char)3 [L87] partial_sum = partial_sum + a3 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L89] COND FALSE !(i < nb) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=3, na=4, nb=1, r0=0, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, carry=0, i=4, na=4, nb=1, r0=0, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, i=4, r0=0, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\result=218103808, a0=234770789, a1=917073, a2=3582, a3=13, b0=4294967451, b1=0, b2=0, b3=0] [L130] RET, EXPR mp_add(a, b) [L130] r = mp_add(a, b) [L132] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 22, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4872 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4872 mSDsluCounter, 9871 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8046 mSDsCounter, 413 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6973 IncrementalHoareTripleChecker+Invalid, 7386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 413 mSolverCounterUnsat, 1825 mSDtfsCounter, 6973 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1534 GetRequests, 1116 SyntacticMatches, 6 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7691 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7029occurred in iteration=20, InterpolantAutomatonStates: 342, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 23687 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1951 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2207 ConstructedInterpolants, 8 QuantifiedInterpolants, 14515 SizeOfPredicates, 22 NumberOfNonLiveVariables, 2121 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 38 InterpolantComputations, 16 PerfectInterpolantSequences, 1366/2249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 13:29:42,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/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_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:29:45,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:29:45,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 13:29:45,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:29:45,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:29:45,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:29:45,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:29:45,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:29:45,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:29:45,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:29:45,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:29:45,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:29:45,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:29:45,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:29:45,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:29:45,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:29:45,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:29:45,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:29:45,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:29:45,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:29:45,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:29:45,382 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:29:45,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:29:45,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:29:45,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:29:45,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:29:45,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:29:45,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:29:45,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:29:45,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:29:45,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:29:45,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:29:45,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:29:45,384 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:29:45,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:29:45,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:29:45,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:29:45,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:29:45,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:29:45,385 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/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 -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2024-11-13 13:29:45,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:29:45,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:29:45,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:29:45,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:29:45,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:29:45,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector/byte_add_1-1.i Unable to find full path for "g++" [2024-11-13 13:29:48,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:29:48,316 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:29:48,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i [2024-11-13 13:29:48,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/41a86a899/dd3a987930dc419086e72aa4bc38c068/FLAG66b0fd842 [2024-11-13 13:29:48,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/data/41a86a899/dd3a987930dc419086e72aa4bc38c068 [2024-11-13 13:29:48,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:29:48,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:29:48,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:29:48,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:29:48,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:29:48,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255dbe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48, skipping insertion in model container [2024-11-13 13:29:48,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:29:48,571 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-13 13:29:48,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:29:48,639 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:29:48,654 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_1462dacc-90d7-4dde-8674-0d04f2c4458b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-13 13:29:48,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:29:48,748 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:29:48,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48 WrapperNode [2024-11-13 13:29:48,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:29:48,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:29:48,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:29:48,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:29:48,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,804 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121 [2024-11-13 13:29:48,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:29:48,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:29:48,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:29:48,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:29:48,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,848 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 13:29:48,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:29:48,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:29:48,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:29:48,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:29:48,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (1/1) ... [2024-11-13 13:29:48,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:29:48,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:48,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:29:48,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:29:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:29:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:29:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:29:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:29:49,079 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:29:49,081 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:29:49,580 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-13 13:29:49,580 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:29:49,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:29:49,598 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:29:49,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:49 BoogieIcfgContainer [2024-11-13 13:29:49,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:29:49,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:29:49,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:29:49,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:29:49,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:48" (1/3) ... [2024-11-13 13:29:49,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3206e515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:49, skipping insertion in model container [2024-11-13 13:29:49,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:48" (2/3) ... [2024-11-13 13:29:49,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3206e515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:49, skipping insertion in model container [2024-11-13 13:29:49,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:49" (3/3) ... [2024-11-13 13:29:49,611 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-13 13:29:49,631 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:29:49,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG byte_add_1-1.i that has 1 procedures, 42 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:29:49,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:29:49,728 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;@755a3498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:29:49,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:29:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:29:49,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:49,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:49,743 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:49,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 224523406, now seen corresponding path program 1 times [2024-11-13 13:29:49,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972859620] [2024-11-13 13:29:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:49,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:49,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:49,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:49,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:29:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:49,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 13:29:49,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:49,917 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 13:29:49,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:49,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972859620] [2024-11-13 13:29:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972859620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:49,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:49,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:29:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750350831] [2024-11-13 13:29:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:49,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:29:49,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:29:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:29:49,950 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:49,969 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-13 13:29:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:29:49,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 13:29:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:49,983 INFO L225 Difference]: With dead ends: 57 [2024-11-13 13:29:49,984 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 13:29:49,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:29:49,990 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:49,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:29:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 13:29:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 13:29:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-13 13:29:50,035 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-13 13:29:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:50,036 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-13 13:29:50,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-13 13:29:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:29:50,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:50,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:50,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:29:50,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:50,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:50,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1772939248, now seen corresponding path program 1 times [2024-11-13 13:29:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:50,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138085739] [2024-11-13 13:29:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:50,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:50,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:29:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:50,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:29:50,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:50,372 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 13:29:50,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:50,372 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138085739] [2024-11-13 13:29:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138085739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:50,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:50,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:29:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986330822] [2024-11-13 13:29:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:50,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:29:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:29:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:29:50,376 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:50,657 INFO L93 Difference]: Finished difference Result 89 states and 156 transitions. [2024-11-13 13:29:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:29:50,658 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 13:29:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:50,661 INFO L225 Difference]: With dead ends: 89 [2024-11-13 13:29:50,663 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 13:29:50,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 13:29:50,665 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:50,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:50,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 13:29:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-11-13 13:29:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2024-11-13 13:29:50,678 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 12 [2024-11-13 13:29:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:50,679 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2024-11-13 13:29:50,679 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2024-11-13 13:29:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 13:29:50,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:50,680 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:50,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:29:50,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:50,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:50,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash 816304869, now seen corresponding path program 1 times [2024-11-13 13:29:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400547930] [2024-11-13 13:29:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:50,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:50,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:50,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:50,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:29:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:50,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:29:50,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:51,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:51,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:51,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400547930] [2024-11-13 13:29:51,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400547930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:51,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:51,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:29:51,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526466725] [2024-11-13 13:29:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:51,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:29:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:29:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:29:51,035 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:51,339 INFO L93 Difference]: Finished difference Result 159 states and 247 transitions. [2024-11-13 13:29:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:29:51,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 13:29:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:51,342 INFO L225 Difference]: With dead ends: 159 [2024-11-13 13:29:51,342 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 13:29:51,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:51,344 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 55 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:51,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 150 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 13:29:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2024-11-13 13:29:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 104 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2024-11-13 13:29:51,359 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 18 [2024-11-13 13:29:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2024-11-13 13:29:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2024-11-13 13:29:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 13:29:51,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:51,363 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:51,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:29:51,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:51,564 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:51,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash 554372135, now seen corresponding path program 1 times [2024-11-13 13:29:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:51,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974955326] [2024-11-13 13:29:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:51,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:51,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:51,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:51,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:29:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:51,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:29:51,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:29:51,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:51,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974955326] [2024-11-13 13:29:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974955326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:29:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462902845] [2024-11-13 13:29:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:51,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:29:51,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:29:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:29:51,679 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:51,694 INFO L93 Difference]: Finished difference Result 110 states and 162 transitions. [2024-11-13 13:29:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:29:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 13:29:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:51,696 INFO L225 Difference]: With dead ends: 110 [2024-11-13 13:29:51,696 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 13:29:51,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 13:29:51,698 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 44 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 50 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 13:29:51,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:29:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 13:29:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-13 13:29:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2024-11-13 13:29:51,706 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 19 [2024-11-13 13:29:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:51,706 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2024-11-13 13:29:51,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2024-11-13 13:29:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:29:51,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:51,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:51,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:29:51,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:51,912 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:51,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:51,913 INFO L85 PathProgramCache]: Analyzing trace with hash 202519592, now seen corresponding path program 1 times [2024-11-13 13:29:51,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:51,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662818215] [2024-11-13 13:29:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:51,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:51,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:51,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:51,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:29:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:52,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:29:52,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:52,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:52,139 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662818215] [2024-11-13 13:29:52,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662818215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:52,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:52,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:29:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698265037] [2024-11-13 13:29:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:52,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:29:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:29:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:29:52,142 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:52,376 INFO L93 Difference]: Finished difference Result 142 states and 203 transitions. [2024-11-13 13:29:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:29:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-13 13:29:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:52,378 INFO L225 Difference]: With dead ends: 142 [2024-11-13 13:29:52,378 INFO L226 Difference]: Without dead ends: 99 [2024-11-13 13:29:52,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:29:52,380 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:52,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:29:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-13 13:29:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-11-13 13:29:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.446808510638298) internal successors, (136), 94 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2024-11-13 13:29:52,393 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 25 [2024-11-13 13:29:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:52,393 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2024-11-13 13:29:52,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2024-11-13 13:29:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 13:29:52,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:52,395 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:52,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:29:52,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:52,596 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:52,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 170822263, now seen corresponding path program 1 times [2024-11-13 13:29:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595982676] [2024-11-13 13:29:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:52,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:52,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:29:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:52,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:29:52,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:52,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:52,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595982676] [2024-11-13 13:29:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595982676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:52,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:29:52,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736612039] [2024-11-13 13:29:52,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:52,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:29:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:29:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:52,838 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:53,113 INFO L93 Difference]: Finished difference Result 183 states and 263 transitions. [2024-11-13 13:29:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:29:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 13:29:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:53,115 INFO L225 Difference]: With dead ends: 183 [2024-11-13 13:29:53,115 INFO L226 Difference]: Without dead ends: 140 [2024-11-13 13:29:53,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:53,116 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:53,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 197 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-13 13:29:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 95. [2024-11-13 13:29:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.446808510638298) internal successors, (136), 94 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2024-11-13 13:29:53,129 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 26 [2024-11-13 13:29:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:53,130 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2024-11-13 13:29:53,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2024-11-13 13:29:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:29:53,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:53,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:53,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:29:53,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:53,335 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:53,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:53,336 INFO L85 PathProgramCache]: Analyzing trace with hash -789283521, now seen corresponding path program 1 times [2024-11-13 13:29:53,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:53,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065396998] [2024-11-13 13:29:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:53,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:29:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:53,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:29:53,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:53,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:53,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:53,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065396998] [2024-11-13 13:29:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065396998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:29:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438365548] [2024-11-13 13:29:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:53,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:53,546 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:53,775 INFO L93 Difference]: Finished difference Result 224 states and 323 transitions. [2024-11-13 13:29:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:53,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 13:29:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:53,777 INFO L225 Difference]: With dead ends: 224 [2024-11-13 13:29:53,777 INFO L226 Difference]: Without dead ends: 181 [2024-11-13 13:29:53,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:53,781 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 123 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:53,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 349 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:29:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-13 13:29:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 95. [2024-11-13 13:29:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.446808510638298) internal successors, (136), 94 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2024-11-13 13:29:53,807 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 27 [2024-11-13 13:29:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:53,807 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2024-11-13 13:29:53,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2024-11-13 13:29:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:29:53,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:53,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:53,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:29:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:54,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:54,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1211985347, now seen corresponding path program 1 times [2024-11-13 13:29:54,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:54,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843987102] [2024-11-13 13:29:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:54,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:54,018 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:54,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:29:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:54,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:29:54,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:54,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:54,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843987102] [2024-11-13 13:29:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843987102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:54,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:29:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057992775] [2024-11-13 13:29:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:54,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:29:54,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:29:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:29:54,231 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:54,605 INFO L93 Difference]: Finished difference Result 218 states and 313 transitions. [2024-11-13 13:29:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:29:54,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 13:29:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:54,608 INFO L225 Difference]: With dead ends: 218 [2024-11-13 13:29:54,608 INFO L226 Difference]: Without dead ends: 174 [2024-11-13 13:29:54,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:29:54,609 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 135 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:54,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 469 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-13 13:29:54,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 87. [2024-11-13 13:29:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 86 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2024-11-13 13:29:54,620 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 27 [2024-11-13 13:29:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:54,620 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2024-11-13 13:29:54,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:54,620 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2024-11-13 13:29:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:29:54,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:54,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:54,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:29:54,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:54,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:54,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:54,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1522891172, now seen corresponding path program 1 times [2024-11-13 13:29:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:54,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228627986] [2024-11-13 13:29:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:54,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:54,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:54,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:54,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:29:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:54,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:29:54,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:54,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:55,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228627986] [2024-11-13 13:29:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228627986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:55,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:29:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 13:29:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032762059] [2024-11-13 13:29:55,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:55,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:55,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:55,052 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:55,399 INFO L93 Difference]: Finished difference Result 306 states and 466 transitions. [2024-11-13 13:29:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-13 13:29:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:55,402 INFO L225 Difference]: With dead ends: 306 [2024-11-13 13:29:55,402 INFO L226 Difference]: Without dead ends: 220 [2024-11-13 13:29:55,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:29:55,404 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 90 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:55,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 52 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-13 13:29:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 197. [2024-11-13 13:29:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4540816326530612) internal successors, (285), 196 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 285 transitions. [2024-11-13 13:29:55,422 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 285 transitions. Word has length 29 [2024-11-13 13:29:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:55,422 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 285 transitions. [2024-11-13 13:29:55,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 285 transitions. [2024-11-13 13:29:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:29:55,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:55,426 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:55,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:29:55,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:55,627 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:55,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash -154435626, now seen corresponding path program 1 times [2024-11-13 13:29:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:55,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901226885] [2024-11-13 13:29:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:55,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:55,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:29:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:55,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:29:55,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:29:55,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:29:55,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901226885] [2024-11-13 13:29:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901226885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:55,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:29:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2024-11-13 13:29:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751032157] [2024-11-13 13:29:55,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:55,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:55,931 INFO L87 Difference]: Start difference. First operand 197 states and 285 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:56,196 INFO L93 Difference]: Finished difference Result 547 states and 780 transitions. [2024-11-13 13:29:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:29:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 13:29:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:56,200 INFO L225 Difference]: With dead ends: 547 [2024-11-13 13:29:56,200 INFO L226 Difference]: Without dead ends: 363 [2024-11-13 13:29:56,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:29:56,202 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:56,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 51 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:29:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-13 13:29:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 263. [2024-11-13 13:29:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4427480916030535) internal successors, (378), 262 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 378 transitions. [2024-11-13 13:29:56,228 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 378 transitions. Word has length 64 [2024-11-13 13:29:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:56,228 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 378 transitions. [2024-11-13 13:29:56,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 378 transitions. [2024-11-13 13:29:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:29:56,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:56,231 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:56,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:29:56,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:56,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:56,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2089547672, now seen corresponding path program 1 times [2024-11-13 13:29:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497916767] [2024-11-13 13:29:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:56,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:56,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:56,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:56,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:29:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:29:56,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:29:56,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:56,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497916767] [2024-11-13 13:29:56,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497916767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:56,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:56,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:29:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529356077] [2024-11-13 13:29:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:56,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:29:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:29:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:29:56,622 INFO L87 Difference]: Start difference. First operand 263 states and 378 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:56,801 INFO L93 Difference]: Finished difference Result 541 states and 785 transitions. [2024-11-13 13:29:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:29:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 13:29:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:56,806 INFO L225 Difference]: With dead ends: 541 [2024-11-13 13:29:56,806 INFO L226 Difference]: Without dead ends: 401 [2024-11-13 13:29:56,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:29:56,808 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:56,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-13 13:29:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-13 13:29:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.45) internal successors, (580), 400 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 580 transitions. [2024-11-13 13:29:56,852 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 580 transitions. Word has length 64 [2024-11-13 13:29:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:56,853 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 580 transitions. [2024-11-13 13:29:56,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 580 transitions. [2024-11-13 13:29:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:29:56,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:56,856 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:56,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:29:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:57,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:57,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash 135804521, now seen corresponding path program 1 times [2024-11-13 13:29:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211512866] [2024-11-13 13:29:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:57,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:57,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:57,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:57,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:29:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:57,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:29:57,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:29:57,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:57,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211512866] [2024-11-13 13:29:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211512866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:29:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855544610] [2024-11-13 13:29:57,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:57,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:29:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:29:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:57,296 INFO L87 Difference]: Start difference. First operand 401 states and 580 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:57,476 INFO L93 Difference]: Finished difference Result 679 states and 987 transitions. [2024-11-13 13:29:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:29:57,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:29:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:57,483 INFO L225 Difference]: With dead ends: 679 [2024-11-13 13:29:57,484 INFO L226 Difference]: Without dead ends: 539 [2024-11-13 13:29:57,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:57,486 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 62 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:57,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 177 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-13 13:29:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 401. [2024-11-13 13:29:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.45) internal successors, (580), 400 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 580 transitions. [2024-11-13 13:29:57,535 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 580 transitions. Word has length 65 [2024-11-13 13:29:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:57,536 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 580 transitions. [2024-11-13 13:29:57,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 580 transitions. [2024-11-13 13:29:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 13:29:57,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:57,538 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:57,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:29:57,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:57,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:57,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 986329761, now seen corresponding path program 1 times [2024-11-13 13:29:57,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:57,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320560802] [2024-11-13 13:29:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:57,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:57,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:57,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:57,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:29:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:57,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:29:57,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:29:58,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:29:58,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:58,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320560802] [2024-11-13 13:29:58,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320560802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:58,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:29:58,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2024-11-13 13:29:58,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411537091] [2024-11-13 13:29:58,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:58,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:29:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:29:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:29:58,552 INFO L87 Difference]: Start difference. First operand 401 states and 580 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:58,951 INFO L93 Difference]: Finished difference Result 860 states and 1262 transitions. [2024-11-13 13:29:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:29:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-13 13:29:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:58,956 INFO L225 Difference]: With dead ends: 860 [2024-11-13 13:29:58,957 INFO L226 Difference]: Without dead ends: 477 [2024-11-13 13:29:58,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:29:58,959 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 197 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:58,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 93 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:29:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-13 13:29:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 430. [2024-11-13 13:29:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.3426573426573427) internal successors, (576), 429 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 576 transitions. [2024-11-13 13:29:59,004 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 576 transitions. Word has length 66 [2024-11-13 13:29:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:59,004 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 576 transitions. [2024-11-13 13:29:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 576 transitions. [2024-11-13 13:29:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:29:59,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:59,007 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:59,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:29:59,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:59,208 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:59,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 103028437, now seen corresponding path program 1 times [2024-11-13 13:29:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849961854] [2024-11-13 13:29:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:59,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:59,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:29:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:59,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:29:59,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:29:59,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:59,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:29:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849961854] [2024-11-13 13:29:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849961854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:59,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:59,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:29:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284589532] [2024-11-13 13:29:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:59,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:29:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:59,442 INFO L87 Difference]: Start difference. First operand 430 states and 576 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:59,624 INFO L93 Difference]: Finished difference Result 730 states and 980 transitions. [2024-11-13 13:29:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:29:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:59,628 INFO L225 Difference]: With dead ends: 730 [2024-11-13 13:29:59,628 INFO L226 Difference]: Without dead ends: 579 [2024-11-13 13:29:59,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:59,630 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 96 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:59,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 333 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-13 13:29:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 281. [2024-11-13 13:29:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3357142857142856) internal successors, (374), 280 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2024-11-13 13:29:59,659 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 70 [2024-11-13 13:29:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:59,660 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2024-11-13 13:29:59,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:29:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2024-11-13 13:29:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:29:59,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:59,663 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:59,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:29:59,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:59,864 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:59,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash 157421335, now seen corresponding path program 1 times [2024-11-13 13:29:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:29:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180660810] [2024-11-13 13:29:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:59,868 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:59,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:29:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:59,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 13:29:59,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:05,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:08,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:08,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180660810] [2024-11-13 13:30:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180660810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:08,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:30:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45 [2024-11-13 13:30:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131269569] [2024-11-13 13:30:08,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:08,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:30:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:30:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1835, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:30:08,415 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:30,344 INFO L93 Difference]: Finished difference Result 1507 states and 1966 transitions. [2024-11-13 13:30:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-13 13:30:30,345 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:30:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:30,352 INFO L225 Difference]: With dead ends: 1507 [2024-11-13 13:30:30,352 INFO L226 Difference]: Without dead ends: 1375 [2024-11-13 13:30:30,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=2319, Invalid=12933, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 13:30:30,357 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 1634 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:30,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 4974 Invalid, 3461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 13:30:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-13 13:30:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 619. [2024-11-13 13:30:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.343042071197411) internal successors, (830), 618 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 830 transitions. [2024-11-13 13:30:30,450 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 830 transitions. Word has length 70 [2024-11-13 13:30:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:30,450 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 830 transitions. [2024-11-13 13:30:30,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 830 transitions. [2024-11-13 13:30:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:30:30,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:30,453 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:30,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:30:30,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:30,657 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:30,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2045458835, now seen corresponding path program 1 times [2024-11-13 13:30:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:30:30,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36152324] [2024-11-13 13:30:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:30,662 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:30,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:30:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:30,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:30:30,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:30,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:31,036 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36152324] [2024-11-13 13:30:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36152324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:31,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:30:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2024-11-13 13:30:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686591820] [2024-11-13 13:30:31,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:31,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:30:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:30:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:30:31,038 INFO L87 Difference]: Start difference. First operand 619 states and 830 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:31,431 INFO L93 Difference]: Finished difference Result 1305 states and 1705 transitions. [2024-11-13 13:30:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:30:31,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:30:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:31,436 INFO L225 Difference]: With dead ends: 1305 [2024-11-13 13:30:31,436 INFO L226 Difference]: Without dead ends: 701 [2024-11-13 13:30:31,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:30:31,454 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 124 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:31,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 281 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:30:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-13 13:30:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 490. [2024-11-13 13:30:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.294478527607362) internal successors, (633), 489 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 633 transitions. [2024-11-13 13:30:31,513 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 633 transitions. Word has length 70 [2024-11-13 13:30:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:31,513 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 633 transitions. [2024-11-13 13:30:31,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 633 transitions. [2024-11-13 13:30:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:30:31,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:31,516 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:31,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:31,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:31,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:31,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1079600553, now seen corresponding path program 2 times [2024-11-13 13:30:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:30:31,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571081644] [2024-11-13 13:30:31,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:31,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:31,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:30:31,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:30:31,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:31,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:30:31,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:30:31,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:30:32,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571081644] [2024-11-13 13:30:32,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571081644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:32,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:30:32,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-13 13:30:32,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166821758] [2024-11-13 13:30:32,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:32,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:30:32,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:30:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:30:32,041 INFO L87 Difference]: Start difference. First operand 490 states and 633 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:32,444 INFO L93 Difference]: Finished difference Result 1066 states and 1358 transitions. [2024-11-13 13:30:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:30:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:30:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:32,447 INFO L225 Difference]: With dead ends: 1066 [2024-11-13 13:30:32,447 INFO L226 Difference]: Without dead ends: 591 [2024-11-13 13:30:32,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:30:32,449 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 147 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:32,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 313 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:30:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-13 13:30:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 454. [2024-11-13 13:30:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3002207505518764) internal successors, (589), 453 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 589 transitions. [2024-11-13 13:30:32,500 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 589 transitions. Word has length 70 [2024-11-13 13:30:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:32,500 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 589 transitions. [2024-11-13 13:30:32,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 589 transitions. [2024-11-13 13:30:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 13:30:32,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:32,502 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:32,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:32,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:32,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:32,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1674209724, now seen corresponding path program 1 times [2024-11-13 13:30:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:30:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080485205] [2024-11-13 13:30:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:32,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:32,706 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:32,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:30:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:32,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:30:32,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:30:32,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:30:32,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080485205] [2024-11-13 13:30:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080485205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:32,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:30:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389002517] [2024-11-13 13:30:32,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:32,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:32,877 INFO L87 Difference]: Start difference. First operand 454 states and 589 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:33,026 INFO L93 Difference]: Finished difference Result 803 states and 1067 transitions. [2024-11-13 13:30:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:33,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 13:30:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:33,029 INFO L225 Difference]: With dead ends: 803 [2024-11-13 13:30:33,029 INFO L226 Difference]: Without dead ends: 627 [2024-11-13 13:30:33,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:33,030 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:33,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-13 13:30:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2024-11-13 13:30:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.3194888178913737) internal successors, (826), 626 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 826 transitions. [2024-11-13 13:30:33,127 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 826 transitions. Word has length 72 [2024-11-13 13:30:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:33,127 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 826 transitions. [2024-11-13 13:30:33,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 826 transitions. [2024-11-13 13:30:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:30:33,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:33,129 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:33,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:30:33,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:33,330 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:33,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1108821901, now seen corresponding path program 1 times [2024-11-13 13:30:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:30:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779657653] [2024-11-13 13:30:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:33,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:33,334 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:33,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:30:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:33,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:30:33,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 48 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:33,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 48 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:30:33,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779657653] [2024-11-13 13:30:33,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779657653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:33,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:30:33,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2024-11-13 13:30:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036355384] [2024-11-13 13:30:33,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:33,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:30:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:30:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:30:33,885 INFO L87 Difference]: Start difference. First operand 627 states and 826 transitions. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:34,901 INFO L93 Difference]: Finished difference Result 1651 states and 2178 transitions. [2024-11-13 13:30:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:30:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-13 13:30:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:34,906 INFO L225 Difference]: With dead ends: 1651 [2024-11-13 13:30:34,906 INFO L226 Difference]: Without dead ends: 860 [2024-11-13 13:30:34,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:30:34,908 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 263 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:34,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 174 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:30:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-13 13:30:34,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 609. [2024-11-13 13:30:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.3519736842105263) internal successors, (822), 608 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2024-11-13 13:30:34,977 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 73 [2024-11-13 13:30:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:34,977 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2024-11-13 13:30:34,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2024-11-13 13:30:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:30:34,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:34,979 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:35,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:30:35,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:35,181 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:35,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash 363461, now seen corresponding path program 1 times [2024-11-13 13:30:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:30:35,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306161947] [2024-11-13 13:30:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:35,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:35,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:35,185 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:35,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:30:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:35,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 13:30:35,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:44,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:30:44,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306161947] [2024-11-13 13:30:44,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306161947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:44,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:30:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2024-11-13 13:30:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293437236] [2024-11-13 13:30:44,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:44,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:30:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:30:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:30:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2015, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:30:44,305 INFO L87 Difference]: Start difference. First operand 609 states and 822 transitions. Second operand has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:21,387 INFO L93 Difference]: Finished difference Result 3819 states and 4850 transitions. [2024-11-13 13:31:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-13 13:31:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 13:31:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:21,394 INFO L225 Difference]: With dead ends: 3819 [2024-11-13 13:31:21,394 INFO L226 Difference]: Without dead ends: 3383 [2024-11-13 13:31:21,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5428 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=2764, Invalid=18992, Unknown=0, NotChecked=0, Total=21756 [2024-11-13 13:31:21,398 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 1581 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 6444 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:21,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 6444 Invalid, 4200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-13 13:31:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2024-11-13 13:31:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 1639. [2024-11-13 13:31:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 1.3046398046398047) internal successors, (2137), 1638 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2137 transitions. [2024-11-13 13:31:21,606 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2137 transitions. Word has length 74 [2024-11-13 13:31:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:21,606 INFO L471 AbstractCegarLoop]: Abstraction has 1639 states and 2137 transitions. [2024-11-13 13:31:21,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2137 transitions. [2024-11-13 13:31:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:31:21,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:21,609 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:21,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-13 13:31:21,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:21,810 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:21,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -357062651, now seen corresponding path program 1 times [2024-11-13 13:31:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:31:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704567339] [2024-11-13 13:31:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:21,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:21,814 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:21,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:31:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:21,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:31:21,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:26,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:30,899 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:31:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704567339] [2024-11-13 13:31:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704567339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:30,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:31:30,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2024-11-13 13:31:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012286787] [2024-11-13 13:31:30,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:30,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:31:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:31:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:31:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:31:30,901 INFO L87 Difference]: Start difference. First operand 1639 states and 2137 transitions. Second operand has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:48,337 INFO L93 Difference]: Finished difference Result 7600 states and 9464 transitions. [2024-11-13 13:32:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-13 13:32:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 13:32:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:48,354 INFO L225 Difference]: With dead ends: 7600 [2024-11-13 13:32:48,355 INFO L226 Difference]: Without dead ends: 6292 [2024-11-13 13:32:48,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22717 ImplicationChecksByTransitivity, 65.3s TimeCoverageRelationStatistics Valid=8540, Invalid=60892, Unknown=0, NotChecked=0, Total=69432 [2024-11-13 13:32:48,365 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 2131 mSDsluCounter, 17020 mSDsCounter, 0 mSdLazyCounter, 10962 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 17728 SdHoareTripleChecker+Invalid, 11287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 10962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:48,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 17728 Invalid, 11287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [325 Valid, 10962 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2024-11-13 13:32:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6292 states. [2024-11-13 13:32:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6292 to 3325. [2024-11-13 13:32:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.289410348977136) internal successors, (4286), 3324 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4286 transitions. [2024-11-13 13:32:48,762 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4286 transitions. Word has length 74 [2024-11-13 13:32:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:48,763 INFO L471 AbstractCegarLoop]: Abstraction has 3325 states and 4286 transitions. [2024-11-13 13:32:48,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4286 transitions. [2024-11-13 13:32:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:32:48,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:48,766 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:48,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 13:32:48,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:48,967 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:48,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1937178329, now seen corresponding path program 1 times [2024-11-13 13:32:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:32:48,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837681768] [2024-11-13 13:32:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:48,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:48,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:48,970 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:48,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 13:32:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:49,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:32:49,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:53,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:58,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:32:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837681768] [2024-11-13 13:32:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837681768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:58,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:32:58,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:32:58,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610612685] [2024-11-13 13:32:58,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:58,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:32:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:32:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:32:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:32:58,237 INFO L87 Difference]: Start difference. First operand 3325 states and 4286 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:08,451 INFO L93 Difference]: Finished difference Result 5356 states and 6759 transitions. [2024-11-13 13:34:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-13 13:34:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:34:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:08,464 INFO L225 Difference]: With dead ends: 5356 [2024-11-13 13:34:08,464 INFO L226 Difference]: Without dead ends: 5174 [2024-11-13 13:34:08,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13335 ImplicationChecksByTransitivity, 66.7s TimeCoverageRelationStatistics Valid=4593, Invalid=39297, Unknown=0, NotChecked=0, Total=43890 [2024-11-13 13:34:08,469 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 2143 mSDsluCounter, 6541 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 6776 SdHoareTripleChecker+Invalid, 4484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:08,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 6776 Invalid, 4484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 4289 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-13 13:34:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2024-11-13 13:34:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 3707. [2024-11-13 13:34:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3706 states have (on average 1.2838640043173233) internal successors, (4758), 3706 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 4758 transitions. [2024-11-13 13:34:08,805 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 4758 transitions. Word has length 77 [2024-11-13 13:34:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:08,805 INFO L471 AbstractCegarLoop]: Abstraction has 3707 states and 4758 transitions. [2024-11-13 13:34:08,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 4758 transitions. [2024-11-13 13:34:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:34:08,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:08,809 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:08,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 13:34:09,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:09,010 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:09,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1548483225, now seen corresponding path program 1 times [2024-11-13 13:34:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:34:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137870556] [2024-11-13 13:34:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:09,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:09,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:09,012 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:09,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 13:34:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:09,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:34:09,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:34:13,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:34:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:34:17,481 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:34:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137870556] [2024-11-13 13:34:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137870556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:34:17,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:34:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:34:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757314116] [2024-11-13 13:34:17,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:34:17,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:34:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:34:17,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:34:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2290, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:34:17,483 INFO L87 Difference]: Start difference. First operand 3707 states and 4758 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:43,628 INFO L93 Difference]: Finished difference Result 5571 states and 7065 transitions. [2024-11-13 13:34:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 13:34:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:34:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:43,641 INFO L225 Difference]: With dead ends: 5571 [2024-11-13 13:34:43,641 INFO L226 Difference]: Without dead ends: 5004 [2024-11-13 13:34:43,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4535 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=2473, Invalid=18407, Unknown=0, NotChecked=0, Total=20880 [2024-11-13 13:34:43,644 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 1048 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 3603 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:43,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 5589 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3603 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-13 13:34:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2024-11-13 13:34:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4322. [2024-11-13 13:34:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4321 states have (on average 1.2867391807451978) internal successors, (5560), 4321 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5560 transitions. [2024-11-13 13:34:44,020 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5560 transitions. Word has length 77 [2024-11-13 13:34:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:44,020 INFO L471 AbstractCegarLoop]: Abstraction has 4322 states and 5560 transitions. [2024-11-13 13:34:44,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5560 transitions. [2024-11-13 13:34:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:34:44,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:44,023 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:44,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 13:34:44,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:44,224 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:44,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1235929941, now seen corresponding path program 2 times [2024-11-13 13:34:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:34:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994127658] [2024-11-13 13:34:44,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:34:44,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:34:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:44,226 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:34:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 13:34:44,298 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:34:44,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:34:44,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:34:44,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:34:48,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:34:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:34:52,531 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:34:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994127658] [2024-11-13 13:34:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994127658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:34:52,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:34:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2024-11-13 13:34:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604082770] [2024-11-13 13:34:52,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:34:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 13:34:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:34:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 13:34:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2103, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:34:52,533 INFO L87 Difference]: Start difference. First operand 4322 states and 5560 transitions. Second operand has 48 states, 48 states have (on average 3.1666666666666665) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:20,163 INFO L93 Difference]: Finished difference Result 14908 states and 18681 transitions. [2024-11-13 13:36:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2024-11-13 13:36:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1666666666666665) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:36:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:20,188 INFO L225 Difference]: With dead ends: 14908 [2024-11-13 13:36:20,188 INFO L226 Difference]: Without dead ends: 11061 [2024-11-13 13:36:20,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28154 ImplicationChecksByTransitivity, 78.1s TimeCoverageRelationStatistics Valid=8735, Invalid=72205, Unknown=0, NotChecked=0, Total=80940 [2024-11-13 13:36:20,196 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 1961 mSDsluCounter, 12724 mSDsCounter, 0 mSdLazyCounter, 8356 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 13238 SdHoareTripleChecker+Invalid, 8785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 8356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:20,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 13238 Invalid, 8785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [429 Valid, 8356 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2024-11-13 13:36:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2024-11-13 13:36:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 6549. [2024-11-13 13:36:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 6548 states have (on average 1.2945937690897984) internal successors, (8477), 6548 states have internal predecessors, (8477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 8477 transitions. [2024-11-13 13:36:20,833 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 8477 transitions. Word has length 77 [2024-11-13 13:36:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:20,833 INFO L471 AbstractCegarLoop]: Abstraction has 6549 states and 8477 transitions. [2024-11-13 13:36:20,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1666666666666665) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 8477 transitions. [2024-11-13 13:36:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:36:20,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:20,837 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:20,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 13:36:21,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:21,038 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:36:21,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 881681105, now seen corresponding path program 1 times [2024-11-13 13:36:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:36:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999770115] [2024-11-13 13:36:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:21,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:21,040 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:21,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 13:36:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:21,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:36:21,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:36:21,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:21,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:36:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999770115] [2024-11-13 13:36:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999770115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:21,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:21,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:36:21,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568058992] [2024-11-13 13:36:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:21,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:36:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:21,182 INFO L87 Difference]: Start difference. First operand 6549 states and 8477 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:21,606 INFO L93 Difference]: Finished difference Result 7705 states and 9794 transitions. [2024-11-13 13:36:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-13 13:36:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:21,611 INFO L225 Difference]: With dead ends: 7705 [2024-11-13 13:36:21,611 INFO L226 Difference]: Without dead ends: 2174 [2024-11-13 13:36:21,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:36:21,614 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 78 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:21,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 314 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:36:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2024-11-13 13:36:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2174. [2024-11-13 13:36:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 2173 states have (on average 1.2972848596410493) internal successors, (2819), 2173 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2819 transitions. [2024-11-13 13:36:21,875 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2819 transitions. Word has length 78 [2024-11-13 13:36:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:21,875 INFO L471 AbstractCegarLoop]: Abstraction has 2174 states and 2819 transitions. [2024-11-13 13:36:21,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2819 transitions. [2024-11-13 13:36:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:36:21,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:21,877 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:21,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 13:36:22,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:22,078 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:36:22,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1933884296, now seen corresponding path program 1 times [2024-11-13 13:36:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:36:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470688226] [2024-11-13 13:36:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:22,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:22,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:22,080 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:22,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 13:36:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:36:22,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:26,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:31,530 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:36:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470688226] [2024-11-13 13:36:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470688226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:31,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:36:31,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:36:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160285663] [2024-11-13 13:36:31,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:31,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:36:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:36:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:36:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2297, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:36:31,533 INFO L87 Difference]: Start difference. First operand 2174 states and 2819 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:20,447 INFO L93 Difference]: Finished difference Result 5337 states and 6623 transitions. [2024-11-13 13:39:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2024-11-13 13:39:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-13 13:39:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:20,455 INFO L225 Difference]: With dead ends: 5337 [2024-11-13 13:39:20,455 INFO L226 Difference]: Without dead ends: 5152 [2024-11-13 13:39:20,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26486 ImplicationChecksByTransitivity, 162.4s TimeCoverageRelationStatistics Valid=6427, Invalid=70025, Unknown=0, NotChecked=0, Total=76452 [2024-11-13 13:39:20,460 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 2033 mSDsluCounter, 7960 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 8174 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:20,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 8174 Invalid, 5883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-13 13:39:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2024-11-13 13:39:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 3043. [2024-11-13 13:39:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 1.289612097304405) internal successors, (3923), 3042 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 3923 transitions. [2024-11-13 13:39:20,787 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 3923 transitions. Word has length 80 [2024-11-13 13:39:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:20,788 INFO L471 AbstractCegarLoop]: Abstraction has 3043 states and 3923 transitions. [2024-11-13 13:39:20,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 3923 transitions. [2024-11-13 13:39:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:39:20,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:20,790 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:20,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 13:39:20,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:20,990 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:20,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -953393096, now seen corresponding path program 1 times [2024-11-13 13:39:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:39:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807344304] [2024-11-13 13:39:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:20,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:20,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:39:20,993 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:39:20,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 13:39:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:21,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:39:21,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:25,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:30,787 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:39:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807344304] [2024-11-13 13:39:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807344304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:30,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:39:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:39:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032836842] [2024-11-13 13:39:30,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:30,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:39:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:39:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:39:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:39:30,789 INFO L87 Difference]: Start difference. First operand 3043 states and 3923 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:42:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:48,784 INFO L93 Difference]: Finished difference Result 8537 states and 10646 transitions. [2024-11-13 13:42:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 313 states. [2024-11-13 13:42:48,785 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-13 13:42:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:48,798 INFO L225 Difference]: With dead ends: 8537 [2024-11-13 13:42:48,798 INFO L226 Difference]: Without dead ends: 7466 [2024-11-13 13:42:48,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48329 ImplicationChecksByTransitivity, 182.5s TimeCoverageRelationStatistics Valid=14168, Invalid=112924, Unknown=0, NotChecked=0, Total=127092 [2024-11-13 13:42:48,808 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 2592 mSDsluCounter, 13619 mSDsCounter, 0 mSdLazyCounter, 9533 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 14112 SdHoareTripleChecker+Invalid, 10291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 9533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:48,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 14112 Invalid, 10291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [758 Valid, 9533 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2024-11-13 13:42:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2024-11-13 13:42:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 4701. [2024-11-13 13:42:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 4700 states have (on average 1.2927659574468084) internal successors, (6076), 4700 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:42:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6076 transitions. [2024-11-13 13:42:49,398 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6076 transitions. Word has length 80 [2024-11-13 13:42:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:49,398 INFO L471 AbstractCegarLoop]: Abstraction has 4701 states and 6076 transitions. [2024-11-13 13:42:49,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:42:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6076 transitions. [2024-11-13 13:42:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:42:49,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:49,401 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:49,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 13:42:49,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:49,602 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:49,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1392276212, now seen corresponding path program 2 times [2024-11-13 13:42:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:42:49,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452686481] [2024-11-13 13:42:49,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:42:49,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:49,606 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:42:49,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1462dacc-90d7-4dde-8674-0d04f2c4458b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 13:42:49,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:42:49,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:42:49,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:42:49,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:42:54,770 INFO L311 TraceCheckSpWp]: Computing backward predicates...