./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.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_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/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_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/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_626f8032-a683-4071-b372-148d797a9f08/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:47:03,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:47:03,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:47:03,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:47:03,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:47:03,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:47:03,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:47:03,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:47:03,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:47:03,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:47:03,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:47:03,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:47:03,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:47:03,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:47:03,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:47:03,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:47:03,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:47:03,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:47:03,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:47:03,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:47:03,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:47:03,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:47:03,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:47:03,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:47:03,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:47:03,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:47:03,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:47:03,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:47:03,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:47:03,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:47:03,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:47:03,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:47:03,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:47:03,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:47:03,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:47:03,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:47:03,381 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_626f8032-a683-4071-b372-148d797a9f08/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 -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2024-11-13 13:47:03,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:47:03,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:47:03,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:47:03,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:47:03,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:47:03,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector/byte_add_2-2.i Unable to find full path for "g++" [2024-11-13 13:47:06,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:47:06,473 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:47:06,474 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i [2024-11-13 13:47:06,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/f70ed8fd5/931f30dad8a342a48dc6939991b123e9/FLAG138c869d8 [2024-11-13 13:47:06,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/f70ed8fd5/931f30dad8a342a48dc6939991b123e9 [2024-11-13 13:47:06,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:47:06,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:47:06,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:47:06,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:47:06,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:47:06,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:06,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9f9057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06, skipping insertion in model container [2024-11-13 13:47:06,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:06,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:47:06,746 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_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2024-11-13 13:47:06,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:47:06,846 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:47:06,863 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_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2024-11-13 13:47:06,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:47:06,945 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:47:06,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06 WrapperNode [2024-11-13 13:47:06,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:47:06,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:47:06,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:47:06,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:47:06,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:06,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,002 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2024-11-13 13:47:07,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:47:07,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:47:07,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:47:07,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:47:07,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,022 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,060 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 13:47:07,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:47:07,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:47:07,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:47:07,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:47:07,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (1/1) ... [2024-11-13 13:47:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:47:07,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:07,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:47:07,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:47:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:47:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:47:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:47:07,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:47:07,300 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:47:07,305 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:47:07,793 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-13 13:47:07,793 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:47:07,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:47:07,808 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:47:07,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:47:07 BoogieIcfgContainer [2024-11-13 13:47:07,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:47:07,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:47:07,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:47:07,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:47:07,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:47:06" (1/3) ... [2024-11-13 13:47:07,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce60178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:47:07, skipping insertion in model container [2024-11-13 13:47:07,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:47:06" (2/3) ... [2024-11-13 13:47:07,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce60178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:47:07, skipping insertion in model container [2024-11-13 13:47:07,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:47:07" (3/3) ... [2024-11-13 13:47:07,827 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2024-11-13 13:47:07,850 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:47:07,853 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG byte_add_2-2.i that has 1 procedures, 51 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:47:07,944 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:47:07,964 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;@460f3f12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:47:07,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:47:07,970 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 13:47:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:47:07,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:07,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:07,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:07,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash -643229382, now seen corresponding path program 1 times [2024-11-13 13:47:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124583852] [2024-11-13 13:47:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:08,223 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 13:47:08,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:08,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124583852] [2024-11-13 13:47:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124583852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:47:08,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414958940] [2024-11-13 13:47:08,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:08,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:47:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:47:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:47:08,258 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 13:47:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:08,278 INFO L93 Difference]: Finished difference Result 75 states and 122 transitions. [2024-11-13 13:47:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:47:08,280 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 13:47:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:08,289 INFO L225 Difference]: With dead ends: 75 [2024-11-13 13:47:08,289 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 13:47:08,293 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 13:47:08,299 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 13:47:08,300 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 13:47:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 13:47:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-13 13:47:08,341 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 13:47:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2024-11-13 13:47:08,353 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 15 [2024-11-13 13:47:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:08,353 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2024-11-13 13:47:08,354 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 13:47:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2024-11-13 13:47:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:47:08,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:08,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:08,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:47:08,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:08,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 264360600, now seen corresponding path program 1 times [2024-11-13 13:47:08,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:08,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344015458] [2024-11-13 13:47:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:08,699 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 13:47:08,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:08,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344015458] [2024-11-13 13:47:08,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344015458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:08,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:08,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:47:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45874346] [2024-11-13 13:47:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:08,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:47:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:47:08,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:47:08,703 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 13:47:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:08,968 INFO L93 Difference]: Finished difference Result 107 states and 186 transitions. [2024-11-13 13:47:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:47:08,970 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 13:47:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:08,971 INFO L225 Difference]: With dead ends: 107 [2024-11-13 13:47:08,971 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 13:47:08,971 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 13:47:08,972 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:08,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:47:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 13:47:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-13 13:47:08,988 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 13:47:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 104 transitions. [2024-11-13 13:47:08,989 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 104 transitions. Word has length 15 [2024-11-13 13:47:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:08,989 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 104 transitions. [2024-11-13 13:47:08,989 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 13:47:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 104 transitions. [2024-11-13 13:47:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:47:08,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:08,990 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 13:47:08,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:47:08,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:08,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415229, now seen corresponding path program 1 times [2024-11-13 13:47:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689855791] [2024-11-13 13:47:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:09,300 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 13:47:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689855791] [2024-11-13 13:47:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689855791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:09,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:47:09,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943028570] [2024-11-13 13:47:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:09,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:47:09,303 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 13:47:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:09,722 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2024-11-13 13:47:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:47:09,726 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 13:47:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:09,727 INFO L225 Difference]: With dead ends: 164 [2024-11-13 13:47:09,727 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 13:47:09,728 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 13:47:09,729 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:09,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 116 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:47:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 13:47:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2024-11-13 13:47:09,748 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 13:47:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 139 transitions. [2024-11-13 13:47:09,753 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 139 transitions. Word has length 21 [2024-11-13 13:47:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:09,754 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 139 transitions. [2024-11-13 13:47:09,754 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 13:47:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 139 transitions. [2024-11-13 13:47:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:47:09,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:09,756 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 13:47:09,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:47:09,756 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:09,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -991010190, now seen corresponding path program 1 times [2024-11-13 13:47:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750467680] [2024-11-13 13:47:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:10,052 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 13:47:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750467680] [2024-11-13 13:47:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750467680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:10,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:47:10,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993503343] [2024-11-13 13:47:10,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:10,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:10,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:47:10,059 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 13:47:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:10,341 INFO L93 Difference]: Finished difference Result 234 states and 354 transitions. [2024-11-13 13:47:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:47:10,342 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 13:47:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:10,344 INFO L225 Difference]: With dead ends: 234 [2024-11-13 13:47:10,344 INFO L226 Difference]: Without dead ends: 156 [2024-11-13 13:47:10,345 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 13:47:10,346 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 13:47:10,350 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 13:47:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-13 13:47:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 99. [2024-11-13 13:47:10,381 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 13:47:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions. [2024-11-13 13:47:10,382 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 27 [2024-11-13 13:47:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:10,383 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions. [2024-11-13 13:47:10,383 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 13:47:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions. [2024-11-13 13:47:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:47:10,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:10,384 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 13:47:10,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:47:10,385 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:10,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1387372287, now seen corresponding path program 1 times [2024-11-13 13:47:10,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167652790] [2024-11-13 13:47:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:10,651 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 13:47:10,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167652790] [2024-11-13 13:47:10,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167652790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:10,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:47:10,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842313195] [2024-11-13 13:47:10,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:10,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:10,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:10,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:47:10,655 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 13:47:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:10,926 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2024-11-13 13:47:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:47:10,926 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 13:47:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:10,928 INFO L225 Difference]: With dead ends: 255 [2024-11-13 13:47:10,928 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 13:47:10,928 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 13:47:10,929 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 13:47:10,931 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 13:47:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 13:47:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 109. [2024-11-13 13:47:10,957 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 13:47:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 161 transitions. [2024-11-13 13:47:10,959 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 161 transitions. Word has length 28 [2024-11-13 13:47:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:10,959 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 161 transitions. [2024-11-13 13:47:10,959 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 13:47:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 161 transitions. [2024-11-13 13:47:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:47:10,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:10,963 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 13:47:10,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:47:10,964 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:10,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 213151683, now seen corresponding path program 1 times [2024-11-13 13:47:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707401017] [2024-11-13 13:47:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:11,215 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 13:47:11,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707401017] [2024-11-13 13:47:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707401017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399599269] [2024-11-13 13:47:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:11,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:11,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:11,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:11,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:47:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:11,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:47:11,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:11,459 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 13:47:11,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399599269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-13 13:47:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7799316] [2024-11-13 13:47:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:11,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:47:11,465 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 13:47:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:11,809 INFO L93 Difference]: Finished difference Result 230 states and 363 transitions. [2024-11-13 13:47:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:47:11,814 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 13:47:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:11,816 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:47:11,816 INFO L226 Difference]: Without dead ends: 154 [2024-11-13 13:47:11,816 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 13:47:11,817 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 13:47:11,817 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 13:47:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-13 13:47:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2024-11-13 13:47:11,862 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 13:47:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2024-11-13 13:47:11,863 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 29 [2024-11-13 13:47:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:11,868 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2024-11-13 13:47:11,868 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 13:47:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2024-11-13 13:47:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:47:11,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:11,870 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 13:47:11,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:47:12,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:47:12,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:12,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1627881454, now seen corresponding path program 1 times [2024-11-13 13:47:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727215317] [2024-11-13 13:47:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:12,398 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 13:47:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727215317] [2024-11-13 13:47:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727215317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264704912] [2024-11-13 13:47:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:12,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:12,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:12,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:12,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:47:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:12,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:47:12,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:12,582 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 13:47:12,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264704912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-13 13:47:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361985926] [2024-11-13 13:47:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:12,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:47:12,584 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 13:47:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:12,876 INFO L93 Difference]: Finished difference Result 288 states and 427 transitions. [2024-11-13 13:47:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:47:12,877 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 13:47:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:12,878 INFO L225 Difference]: With dead ends: 288 [2024-11-13 13:47:12,878 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 13:47:12,879 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 13:47:12,879 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 13:47:12,880 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 13:47:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 13:47:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-11-13 13:47:12,889 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 13:47:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2024-11-13 13:47:12,891 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 35 [2024-11-13 13:47:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:12,891 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2024-11-13 13:47:12,891 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 13:47:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2024-11-13 13:47:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:47:12,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:12,892 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 13:47:12,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:47:13,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 13:47:13,093 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:13,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1924204317, now seen corresponding path program 1 times [2024-11-13 13:47:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647789848] [2024-11-13 13:47:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:13,354 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 13:47:13,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:13,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647789848] [2024-11-13 13:47:13,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647789848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:13,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:13,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:47:13,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748158918] [2024-11-13 13:47:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:13,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:47:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:47:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:47:13,356 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 13:47:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:13,376 INFO L93 Difference]: Finished difference Result 289 states and 401 transitions. [2024-11-13 13:47:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:47:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 13:47:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:13,378 INFO L225 Difference]: With dead ends: 289 [2024-11-13 13:47:13,379 INFO L226 Difference]: Without dead ends: 148 [2024-11-13 13:47:13,380 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 13:47:13,381 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 66 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 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 13:47:13,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 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 13:47:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-13 13:47:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-13 13:47:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3741496598639455) internal successors, (202), 147 states have internal predecessors, (202), 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 13:47:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2024-11-13 13:47:13,404 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 41 [2024-11-13 13:47:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:13,404 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2024-11-13 13:47:13,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 13:47:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2024-11-13 13:47:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:47:13,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:13,406 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 13:47:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:47:13,406 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:13,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1608128189, now seen corresponding path program 1 times [2024-11-13 13:47:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110181644] [2024-11-13 13:47:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:13,715 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 13:47:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110181644] [2024-11-13 13:47:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110181644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016404670] [2024-11-13 13:47:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:13,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:47:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:13,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:47:13,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:13,887 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 13:47:13,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016404670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-13 13:47:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903403314] [2024-11-13 13:47:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:13,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:47:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:47:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:47:13,890 INFO L87 Difference]: Start difference. First operand 148 states and 202 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 13:47:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:14,004 INFO L93 Difference]: Finished difference Result 276 states and 383 transitions. [2024-11-13 13:47:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:47:14,004 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 13:47:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:14,005 INFO L225 Difference]: With dead ends: 276 [2024-11-13 13:47:14,006 INFO L226 Difference]: Without dead ends: 131 [2024-11-13 13:47:14,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 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 13:47:14,007 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:14,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 114 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:47:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-13 13:47:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2024-11-13 13:47:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 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 13:47:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 161 transitions. [2024-11-13 13:47:14,015 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 161 transitions. Word has length 47 [2024-11-13 13:47:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:14,016 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 161 transitions. [2024-11-13 13:47:14,016 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 13:47:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 161 transitions. [2024-11-13 13:47:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:47:14,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:14,018 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 13:47:14,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:47:14,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:14,222 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:14,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1327149206, now seen corresponding path program 1 times [2024-11-13 13:47:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:14,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068086362] [2024-11-13 13:47:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:14,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-13 13:47:14,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068086362] [2024-11-13 13:47:14,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068086362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:14,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:14,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:47:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139799390] [2024-11-13 13:47:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:14,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:47:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:47:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:47:14,536 INFO L87 Difference]: Start difference. First operand 122 states and 161 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 13:47:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:14,915 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2024-11-13 13:47:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:47:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 13:47:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:14,918 INFO L225 Difference]: With dead ends: 445 [2024-11-13 13:47:14,918 INFO L226 Difference]: Without dead ends: 339 [2024-11-13 13:47:14,918 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 13:47:14,922 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 137 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:14,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 251 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:47:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-13 13:47:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 122. [2024-11-13 13:47:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 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 13:47:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 161 transitions. [2024-11-13 13:47:14,937 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 161 transitions. Word has length 68 [2024-11-13 13:47:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:14,937 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 161 transitions. [2024-11-13 13:47:14,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 13:47:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 161 transitions. [2024-11-13 13:47:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 13:47:14,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:14,938 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 13:47:14,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:47:14,939 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:14,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 479931917, now seen corresponding path program 1 times [2024-11-13 13:47:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440571082] [2024-11-13 13:47:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:14,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:15,627 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 13:47:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:15,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440571082] [2024-11-13 13:47:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440571082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292529483] [2024-11-13 13:47:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:15,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:15,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:15,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:15,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:47:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:15,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:47:15,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-13 13:47:16,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292529483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:16,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:16,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-13 13:47:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138823351] [2024-11-13 13:47:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:16,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:47:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:47:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:47:16,007 INFO L87 Difference]: Start difference. First operand 122 states and 161 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 13:47:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:16,718 INFO L93 Difference]: Finished difference Result 562 states and 731 transitions. [2024-11-13 13:47:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:47:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 13:47:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:16,721 INFO L225 Difference]: With dead ends: 562 [2024-11-13 13:47:16,722 INFO L226 Difference]: Without dead ends: 424 [2024-11-13 13:47:16,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:47:16,723 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 233 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:16,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 491 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:47:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-13 13:47:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 115. [2024-11-13 13:47:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 114 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 13:47:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 148 transitions. [2024-11-13 13:47:16,735 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 148 transitions. Word has length 69 [2024-11-13 13:47:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:16,736 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 148 transitions. [2024-11-13 13:47:16,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 13:47:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 148 transitions. [2024-11-13 13:47:16,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 13:47:16,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:16,737 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 13:47:16,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:47:16,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:16,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:16,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2019912932, now seen corresponding path program 1 times [2024-11-13 13:47:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:16,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107162279] [2024-11-13 13:47:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 13:47:17,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:17,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107162279] [2024-11-13 13:47:17,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107162279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:17,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507406596] [2024-11-13 13:47:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:17,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:17,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:17,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:47:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:17,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:47:17,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:47:17,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 13:47:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507406596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:17,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2024-11-13 13:47:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577422233] [2024-11-13 13:47:17,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:17,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:17,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:17,655 INFO L87 Difference]: Start difference. First operand 115 states and 148 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 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 13:47:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:18,871 INFO L93 Difference]: Finished difference Result 581 states and 791 transitions. [2024-11-13 13:47:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:47:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 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 13:47:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:18,875 INFO L225 Difference]: With dead ends: 581 [2024-11-13 13:47:18,875 INFO L226 Difference]: Without dead ends: 455 [2024-11-13 13:47:18,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:47:18,879 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 330 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:18,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 236 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:47:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-13 13:47:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 398. [2024-11-13 13:47:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.2997481108312343) internal successors, (516), 397 states have internal predecessors, (516), 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 13:47:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 516 transitions. [2024-11-13 13:47:18,917 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 516 transitions. Word has length 71 [2024-11-13 13:47:18,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:18,917 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 516 transitions. [2024-11-13 13:47:18,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 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 13:47:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 516 transitions. [2024-11-13 13:47:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:47:18,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:18,919 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 13:47:18,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:47:19,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:19,124 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:19,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1337025241, now seen corresponding path program 1 times [2024-11-13 13:47:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:19,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029458341] [2024-11-13 13:47:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:19,836 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 13:47:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029458341] [2024-11-13 13:47:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029458341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473610789] [2024-11-13 13:47:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:19,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:19,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:19,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:47:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:20,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:47:20,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:20,683 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 13:47:20,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:22,166 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 13:47:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473610789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:22,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 25 [2024-11-13 13:47:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493864122] [2024-11-13 13:47:22,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:22,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:47:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:47:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:47:22,170 INFO L87 Difference]: Start difference. First operand 398 states and 516 transitions. Second operand has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 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 13:47:35,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-13 13:47:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:39,425 INFO L93 Difference]: Finished difference Result 6127 states and 7908 transitions. [2024-11-13 13:47:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 13:47:39,426 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 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 73 [2024-11-13 13:47:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:39,450 INFO L225 Difference]: With dead ends: 6127 [2024-11-13 13:47:39,450 INFO L226 Difference]: Without dead ends: 5752 [2024-11-13 13:47:39,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6181 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3348, Invalid=14742, Unknown=0, NotChecked=0, Total=18090 [2024-11-13 13:47:39,461 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 917 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:39,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1615 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 13:47:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2024-11-13 13:47:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 2292. [2024-11-13 13:47:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2291 states have (on average 1.3282409428197295) internal successors, (3043), 2291 states have internal predecessors, (3043), 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 13:47:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3043 transitions. [2024-11-13 13:47:39,761 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3043 transitions. Word has length 73 [2024-11-13 13:47:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:39,761 INFO L471 AbstractCegarLoop]: Abstraction has 2292 states and 3043 transitions. [2024-11-13 13:47:39,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 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 13:47:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3043 transitions. [2024-11-13 13:47:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:47:39,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:39,764 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] [2024-11-13 13:47:39,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:47:39,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:47:39,968 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:39,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash 461006235, now seen corresponding path program 1 times [2024-11-13 13:47:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073035924] [2024-11-13 13:47:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:47:40,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073035924] [2024-11-13 13:47:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073035924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174899442] [2024-11-13 13:47:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:40,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:40,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:47:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:40,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:47:40,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:47:41,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:47:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174899442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:42,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:42,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-13 13:47:42,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669927967] [2024-11-13 13:47:42,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:42,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:47:42,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:47:42,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:47:42,414 INFO L87 Difference]: Start difference. First operand 2292 states and 3043 transitions. Second operand has 21 states, 21 states have (on average 7.809523809523809) internal successors, (164), 21 states have internal predecessors, (164), 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 13:47:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:44,933 INFO L93 Difference]: Finished difference Result 6805 states and 8658 transitions. [2024-11-13 13:47:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 13:47:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.809523809523809) internal successors, (164), 21 states have internal predecessors, (164), 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 13:47:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:44,949 INFO L225 Difference]: With dead ends: 6805 [2024-11-13 13:47:44,949 INFO L226 Difference]: Without dead ends: 4536 [2024-11-13 13:47:44,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:47:44,954 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 295 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:44,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1817 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:47:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2024-11-13 13:47:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 1939. [2024-11-13 13:47:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1938 states have (on average 1.2776057791537667) internal successors, (2476), 1938 states have internal predecessors, (2476), 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 13:47:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2476 transitions. [2024-11-13 13:47:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2476 transitions. Word has length 73 [2024-11-13 13:47:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:45,184 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 2476 transitions. [2024-11-13 13:47:45,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.809523809523809) internal successors, (164), 21 states have internal predecessors, (164), 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 13:47:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2476 transitions. [2024-11-13 13:47:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:47:45,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:45,188 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 13:47:45,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:47:45,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:47:45,392 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:45,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1323370110, now seen corresponding path program 1 times [2024-11-13 13:47:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755616017] [2024-11-13 13:47:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:45,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:47:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755616017] [2024-11-13 13:47:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755616017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679011767] [2024-11-13 13:47:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:46,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:46,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:47:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:46,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:47:46,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:46,540 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 13:47:46,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:46,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679011767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:46,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-13 13:47:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986921737] [2024-11-13 13:47:46,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:46,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:47:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:47:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:47:46,543 INFO L87 Difference]: Start difference. First operand 1939 states and 2476 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 13:47:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:46,808 INFO L93 Difference]: Finished difference Result 1950 states and 2489 transitions. [2024-11-13 13:47:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:47:46,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 74 [2024-11-13 13:47:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:46,815 INFO L225 Difference]: With dead ends: 1950 [2024-11-13 13:47:46,815 INFO L226 Difference]: Without dead ends: 1945 [2024-11-13 13:47:46,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:47:46,817 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 4 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:46,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 161 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:47:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2024-11-13 13:47:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1942. [2024-11-13 13:47:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 1.2776919113858836) internal successors, (2480), 1941 states have internal predecessors, (2480), 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 13:47:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2480 transitions. [2024-11-13 13:47:47,072 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2480 transitions. Word has length 74 [2024-11-13 13:47:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:47,073 INFO L471 AbstractCegarLoop]: Abstraction has 1942 states and 2480 transitions. [2024-11-13 13:47:47,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 13:47:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2480 transitions. [2024-11-13 13:47:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:47:47,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:47,076 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 13:47:47,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:47:47,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:47:47,281 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:47,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1977777941, now seen corresponding path program 1 times [2024-11-13 13:47:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273897864] [2024-11-13 13:47:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:47:47,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273897864] [2024-11-13 13:47:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273897864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552427883] [2024-11-13 13:47:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:47,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:47,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:47,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:47:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:47,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:47:47,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:47:48,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:48,424 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 13:47:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552427883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:48,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 13:47:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987556089] [2024-11-13 13:47:48,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:48,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:47:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:47:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:47:48,427 INFO L87 Difference]: Start difference. First operand 1942 states and 2480 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 13:47:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:49,381 INFO L93 Difference]: Finished difference Result 4022 states and 4999 transitions. [2024-11-13 13:47:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:47:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 13:47:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:49,395 INFO L225 Difference]: With dead ends: 4022 [2024-11-13 13:47:49,395 INFO L226 Difference]: Without dead ends: 4017 [2024-11-13 13:47:49,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:47:49,397 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 232 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:49,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 525 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:47:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2024-11-13 13:47:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 2306. [2024-11-13 13:47:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.3097613882863341) internal successors, (3019), 2305 states have internal predecessors, (3019), 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 13:47:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3019 transitions. [2024-11-13 13:47:49,669 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3019 transitions. Word has length 75 [2024-11-13 13:47:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:49,670 INFO L471 AbstractCegarLoop]: Abstraction has 2306 states and 3019 transitions. [2024-11-13 13:47:49,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 13:47:49,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3019 transitions. [2024-11-13 13:47:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:47:49,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:49,673 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 13:47:49,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 13:47:49,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:47:49,879 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:49,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash -718574504, now seen corresponding path program 1 times [2024-11-13 13:47:49,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:49,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124840271] [2024-11-13 13:47:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:47:50,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:50,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124840271] [2024-11-13 13:47:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124840271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968151043] [2024-11-13 13:47:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:50,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:50,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:50,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:47:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:50,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:47:50,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:51,105 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 13:47:51,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:47:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968151043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:47:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-13 13:47:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912121153] [2024-11-13 13:47:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:51,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:47:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:47:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:47:51,108 INFO L87 Difference]: Start difference. First operand 2306 states and 3019 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:47:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:51,418 INFO L93 Difference]: Finished difference Result 2318 states and 3033 transitions. [2024-11-13 13:47:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:47:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:47:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:51,426 INFO L225 Difference]: With dead ends: 2318 [2024-11-13 13:47:51,426 INFO L226 Difference]: Without dead ends: 2313 [2024-11-13 13:47:51,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:47:51,428 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:51,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:47:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2024-11-13 13:47:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2308. [2024-11-13 13:47:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 1.3094928478543564) internal successors, (3021), 2307 states have internal predecessors, (3021), 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 13:47:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3021 transitions. [2024-11-13 13:47:51,758 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3021 transitions. Word has length 75 [2024-11-13 13:47:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:51,758 INFO L471 AbstractCegarLoop]: Abstraction has 2308 states and 3021 transitions. [2024-11-13 13:47:51,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:47:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3021 transitions. [2024-11-13 13:47:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:47:51,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:51,762 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, 1, 1] [2024-11-13 13:47:51,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:47:51,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:47:51,963 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:51,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2005998318, now seen corresponding path program 1 times [2024-11-13 13:47:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314831005] [2024-11-13 13:47:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:47:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:52,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314831005] [2024-11-13 13:47:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314831005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635817055] [2024-11-13 13:47:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:52,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:52,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:52,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:52,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:47:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:52,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:47:52,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:47:52,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:47:52,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635817055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:52,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:52,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 9] total 17 [2024-11-13 13:47:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797560528] [2024-11-13 13:47:52,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:52,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:47:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:47:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:47:52,905 INFO L87 Difference]: Start difference. First operand 2308 states and 3021 transitions. Second operand has 17 states, 17 states have (on average 8.823529411764707) internal successors, (150), 17 states have internal predecessors, (150), 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 13:47:56,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:56,157 INFO L93 Difference]: Finished difference Result 9537 states and 12483 transitions. [2024-11-13 13:47:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 13:47:56,158 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.823529411764707) internal successors, (150), 17 states have internal predecessors, (150), 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 76 [2024-11-13 13:47:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:56,175 INFO L225 Difference]: With dead ends: 9537 [2024-11-13 13:47:56,175 INFO L226 Difference]: Without dead ends: 6940 [2024-11-13 13:47:56,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=766, Invalid=3016, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 13:47:56,181 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 899 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:56,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 347 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 13:47:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2024-11-13 13:47:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 4351. [2024-11-13 13:47:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4351 states, 4350 states have (on average 1.275632183908046) internal successors, (5549), 4350 states have internal predecessors, (5549), 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 13:47:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 5549 transitions. [2024-11-13 13:47:56,694 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 5549 transitions. Word has length 76 [2024-11-13 13:47:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:56,694 INFO L471 AbstractCegarLoop]: Abstraction has 4351 states and 5549 transitions. [2024-11-13 13:47:56,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.823529411764707) internal successors, (150), 17 states have internal predecessors, (150), 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 13:47:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 5549 transitions. [2024-11-13 13:47:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:47:56,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:56,699 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] [2024-11-13 13:47:56,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 13:47:56,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:47:56,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:56,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 898362881, now seen corresponding path program 1 times [2024-11-13 13:47:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171454767] [2024-11-13 13:47:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:56,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:57,202 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 13:47:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171454767] [2024-11-13 13:47:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171454767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:47:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:47:57,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:47:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897778218] [2024-11-13 13:47:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:47:57,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:47:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:47:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:47:57,204 INFO L87 Difference]: Start difference. First operand 4351 states and 5549 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 13:47:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:47:57,698 INFO L93 Difference]: Finished difference Result 4367 states and 5569 transitions. [2024-11-13 13:47:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:47:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 76 [2024-11-13 13:47:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:47:57,724 INFO L225 Difference]: With dead ends: 4367 [2024-11-13 13:47:57,724 INFO L226 Difference]: Without dead ends: 4362 [2024-11-13 13:47:57,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:47:57,727 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:47:57,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 227 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:47:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2024-11-13 13:47:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4355. [2024-11-13 13:47:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 1.2758383096003674) internal successors, (5555), 4354 states have internal predecessors, (5555), 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 13:47:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 5555 transitions. [2024-11-13 13:47:58,230 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 5555 transitions. Word has length 76 [2024-11-13 13:47:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:47:58,231 INFO L471 AbstractCegarLoop]: Abstraction has 4355 states and 5555 transitions. [2024-11-13 13:47:58,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 13:47:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 5555 transitions. [2024-11-13 13:47:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:47:58,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:47:58,236 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] [2024-11-13 13:47:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:47:58,236 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:47:58,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1236922981, now seen corresponding path program 1 times [2024-11-13 13:47:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821504306] [2024-11-13 13:47:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:47:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821504306] [2024-11-13 13:47:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821504306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128436378] [2024-11-13 13:47:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:59,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:59,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:47:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:59,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:47:59,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:47:59,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:00,302 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 13:48:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128436378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:00,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 25 [2024-11-13 13:48:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447822379] [2024-11-13 13:48:00,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:00,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:48:00,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:48:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:48:00,305 INFO L87 Difference]: Start difference. First operand 4355 states and 5555 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 25 states have internal predecessors, (209), 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 13:48:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:06,057 INFO L93 Difference]: Finished difference Result 16982 states and 21207 transitions. [2024-11-13 13:48:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-13 13:48:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 25 states have internal predecessors, (209), 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 76 [2024-11-13 13:48:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:06,107 INFO L225 Difference]: With dead ends: 16982 [2024-11-13 13:48:06,108 INFO L226 Difference]: Without dead ends: 14809 [2024-11-13 13:48:06,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1582, Invalid=6428, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 13:48:06,118 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 798 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:06,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2629 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:48:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-13 13:48:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 8959. [2024-11-13 13:48:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8959 states, 8958 states have (on average 1.3021879883902656) internal successors, (11665), 8958 states have internal predecessors, (11665), 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 13:48:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8959 states to 8959 states and 11665 transitions. [2024-11-13 13:48:07,198 INFO L78 Accepts]: Start accepts. Automaton has 8959 states and 11665 transitions. Word has length 76 [2024-11-13 13:48:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:07,198 INFO L471 AbstractCegarLoop]: Abstraction has 8959 states and 11665 transitions. [2024-11-13 13:48:07,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 25 states have internal predecessors, (209), 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 13:48:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8959 states and 11665 transitions. [2024-11-13 13:48:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:48:07,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:07,205 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 13:48:07,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:48:07,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:07,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:07,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -564328519, now seen corresponding path program 1 times [2024-11-13 13:48:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30768302] [2024-11-13 13:48:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:48:08,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30768302] [2024-11-13 13:48:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30768302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891664580] [2024-11-13 13:48:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:08,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:08,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:08,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:08,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:48:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:08,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:48:08,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:09,080 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 13:48:09,080 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891664580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:09,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:48:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2024-11-13 13:48:09,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736059924] [2024-11-13 13:48:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:09,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:48:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:48:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:48:09,082 INFO L87 Difference]: Start difference. First operand 8959 states and 11665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 13:48:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:09,894 INFO L93 Difference]: Finished difference Result 8971 states and 11679 transitions. [2024-11-13 13:48:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:48:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 13:48:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:09,920 INFO L225 Difference]: With dead ends: 8971 [2024-11-13 13:48:09,920 INFO L226 Difference]: Without dead ends: 8966 [2024-11-13 13:48:09,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:48:09,924 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:09,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 212 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:48:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8966 states. [2024-11-13 13:48:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8966 to 8949. [2024-11-13 13:48:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8949 states, 8948 states have (on average 1.3023021904336165) internal successors, (11653), 8948 states have internal predecessors, (11653), 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 13:48:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8949 states to 8949 states and 11653 transitions. [2024-11-13 13:48:10,656 INFO L78 Accepts]: Start accepts. Automaton has 8949 states and 11653 transitions. Word has length 77 [2024-11-13 13:48:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:10,657 INFO L471 AbstractCegarLoop]: Abstraction has 8949 states and 11653 transitions. [2024-11-13 13:48:10,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 13:48:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8949 states and 11653 transitions. [2024-11-13 13:48:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:48:10,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:10,663 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 13:48:10,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:48:10,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:10,864 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:10,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1670051909, now seen corresponding path program 1 times [2024-11-13 13:48:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:10,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739455379] [2024-11-13 13:48:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:10,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:48:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:11,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:48:11,108 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:48:11,109 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:48:11,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:48:11,115 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 13:48:11,214 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:48:11,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:48:11 BoogieIcfgContainer [2024-11-13 13:48:11,218 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:48:11,219 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:48:11,219 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:48:11,219 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:48:11,220 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:47:07" (3/4) ... [2024-11-13 13:48:11,222 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:48:11,223 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:48:11,225 INFO L158 Benchmark]: Toolchain (without parser) took 64714.69ms. Allocated memory was 142.6MB in the beginning and 906.0MB in the end (delta: 763.4MB). Free memory was 119.0MB in the beginning and 830.0MB in the end (delta: -711.0MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2024-11-13 13:48:11,226 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:48:11,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.06ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 105.5MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:48:11,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:48:11,227 INFO L158 Benchmark]: Boogie Preprocessor took 97.09ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 100.5MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:48:11,228 INFO L158 Benchmark]: RCFGBuilder took 707.85ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 78.6MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:48:11,230 INFO L158 Benchmark]: TraceAbstraction took 63405.41ms. Allocated memory was 142.6MB in the beginning and 906.0MB in the end (delta: 763.4MB). Free memory was 78.0MB in the beginning and 830.1MB in the end (delta: -752.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-11-13 13:48:11,231 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 906.0MB. Free memory was 830.1MB in the beginning and 830.0MB in the end (delta: 141.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:48:11,232 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.06ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 105.5MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.09ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 100.5MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 707.85ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 78.6MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 63405.41ms. Allocated memory was 142.6MB in the beginning and 906.0MB in the end (delta: 763.4MB). Free memory was 78.0MB in the beginning and 830.1MB in the end (delta: -752.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 906.0MB. Free memory was 830.1MB in the beginning and 830.0MB in the end (delta: 141.0kB). 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; [L125] a = __VERIFIER_nondet_uint() [L127] b = 234770789 [L129] 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=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=1] [L68] nb = (unsigned char)4 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=155] [L85] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=155] [L86] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=155] [L87] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=155] [L89] COND TRUE i < nb VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=155] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=256] [L91] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=256] [L92] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=256] [L93] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, 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=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=0, na=1, nb=4, partial_sum=0] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L104] i = i + (unsigned char)1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=1, i=1, na=1, nb=4, 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=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L83] COND FALSE !(i < na) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L89] COND TRUE i < nb VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L90] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L92] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L93] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L104] i = i + (unsigned char)1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, 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=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L83] COND FALSE !(i < na) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L89] COND TRUE i < nb VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L90] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L91] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L93] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, 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=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L83] COND FALSE !(i < na) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L89] COND TRUE i < nb VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L90] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L91] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L92] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, r0=0, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, r0=0, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, i=4, r0=0, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) VAL [a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\result=218103808, a0=-4294967141, a1=0, a2=0, a3=0, b0=234770789, b1=917073, b2=3582, b3=13] [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] 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: 63.2s, OverallIterations: 22, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4277 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4277 mSDsluCounter, 9934 SdHoareTripleChecker+Invalid, 14.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8076 mSDsCounter, 579 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8147 IncrementalHoareTripleChecker+Invalid, 8726 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 579 mSolverCounterUnsat, 1858 mSDtfsCounter, 8147 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1730 GetRequests, 1268 SyntacticMatches, 8 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10376 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8959occurred in iteration=20, InterpolantAutomatonStates: 374, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 17031 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 2068 NumberOfCodeBlocks, 2068 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2395 ConstructedInterpolants, 4 QuantifiedInterpolants, 16380 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2343 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 40 InterpolantComputations, 15 PerfectInterpolantSequences, 1494/2467 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 13:48:11,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/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_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/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_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/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_626f8032-a683-4071-b372-148d797a9f08/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:48:14,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:48:14,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 13:48:14,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:48:14,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:48:14,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:48:14,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:48:14,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:48:14,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:48:14,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:48:14,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:48:14,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:48:14,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:48:14,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:48:14,395 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:48:14,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:48:14,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:48:14,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:14,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:48:14,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:48:14,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:48:14,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:48:14,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:48:14,398 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_626f8032-a683-4071-b372-148d797a9f08/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 -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2024-11-13 13:48:14,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:48:14,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:48:14,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:48:14,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:48:14,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:48:14,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/bitvector/byte_add_2-2.i Unable to find full path for "g++" [2024-11-13 13:48:16,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:48:17,167 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:48:17,168 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i [2024-11-13 13:48:17,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/a29470a7b/d423bc518ecf4332b754b37cd25bfb45/FLAGc16266600 [2024-11-13 13:48:17,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/data/a29470a7b/d423bc518ecf4332b754b37cd25bfb45 [2024-11-13 13:48:17,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:48:17,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:48:17,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:17,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:48:17,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:48:17,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:17,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782047b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17, skipping insertion in model container [2024-11-13 13:48:17,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:17,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:48:17,741 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_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2024-11-13 13:48:17,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:17,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:48:17,845 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_626f8032-a683-4071-b372-148d797a9f08/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2024-11-13 13:48:17,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:17,916 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:48:17,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17 WrapperNode [2024-11-13 13:48:17,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:17,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:17,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:48:17,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:48:17,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:17,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:17,989 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121 [2024-11-13 13:48:17,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:17,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:48:17,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:48:17,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:48:18,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,026 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 13:48:18,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:48:18,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:48:18,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:48:18,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:48:18,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (1/1) ... [2024-11-13 13:48:18,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:18,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:48:18,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:48:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:48:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:48:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:48:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:48:18,242 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:48:18,244 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:48:18,685 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-13 13:48:18,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:48:18,700 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:48:18,700 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:48:18,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:18 BoogieIcfgContainer [2024-11-13 13:48:18,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:48:18,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:48:18,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:48:18,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:48:18,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:48:17" (1/3) ... [2024-11-13 13:48:18,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a89736e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:18, skipping insertion in model container [2024-11-13 13:48:18,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:17" (2/3) ... [2024-11-13 13:48:18,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a89736e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:18, skipping insertion in model container [2024-11-13 13:48:18,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:18" (3/3) ... [2024-11-13 13:48:18,714 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2024-11-13 13:48:18,730 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:48:18,732 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG byte_add_2-2.i that has 1 procedures, 42 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:48:18,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:18,824 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;@c483a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:18,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:48:18,829 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 13:48:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:48:18,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:18,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:18,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:18,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 224523406, now seen corresponding path program 1 times [2024-11-13 13:48:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212760559] [2024-11-13 13:48:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:18,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:18,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:48:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:18,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 13:48:18,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:18,990 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 13:48:18,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:18,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212760559] [2024-11-13 13:48:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212760559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:18,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:18,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:48:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963071147] [2024-11-13 13:48:18,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:19,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:48:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:48:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:48:19,026 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 13:48:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:19,045 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-13 13:48:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:48:19,048 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 13:48:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:19,056 INFO L225 Difference]: With dead ends: 57 [2024-11-13 13:48:19,056 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 13:48:19,059 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 13:48:19,063 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 13:48:19,065 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 13:48:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 13:48:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 13:48:19,090 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 13:48:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-13 13:48:19,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-13 13:48:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:19,096 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-13 13:48:19,096 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 13:48:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-13 13:48:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:48:19,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:19,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:19,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:48:19,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:19,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:19,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1772939248, now seen corresponding path program 1 times [2024-11-13 13:48:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:19,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808108839] [2024-11-13 13:48:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:19,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:19,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:19,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:48:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:19,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:48:19,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:19,431 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 13:48:19,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:19,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808108839] [2024-11-13 13:48:19,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808108839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:19,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:19,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:48:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058516922] [2024-11-13 13:48:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:19,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:48:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:48:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:48:19,437 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 13:48:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:19,676 INFO L93 Difference]: Finished difference Result 89 states and 156 transitions. [2024-11-13 13:48:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:48:19,676 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 13:48:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:19,677 INFO L225 Difference]: With dead ends: 89 [2024-11-13 13:48:19,677 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 13:48:19,678 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 13:48:19,678 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:19,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 13:48:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-11-13 13:48:19,695 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 13:48:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2024-11-13 13:48:19,696 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 12 [2024-11-13 13:48:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:19,697 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2024-11-13 13:48:19,697 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 13:48:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2024-11-13 13:48:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 13:48:19,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:19,698 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 13:48:19,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:19,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:19,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:19,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash 816304869, now seen corresponding path program 1 times [2024-11-13 13:48:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949604068] [2024-11-13 13:48:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:19,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:19,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:19,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:48:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:19,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:48:19,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:20,027 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 13:48:20,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:20,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:20,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949604068] [2024-11-13 13:48:20,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949604068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:20,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:20,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:48:20,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489874316] [2024-11-13 13:48:20,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:20,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:48:20,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:48:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:48:20,032 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 13:48:20,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:20,314 INFO L93 Difference]: Finished difference Result 159 states and 247 transitions. [2024-11-13 13:48:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:48:20,314 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 13:48:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:20,315 INFO L225 Difference]: With dead ends: 159 [2024-11-13 13:48:20,316 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 13:48:20,316 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 13:48:20,317 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:20,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 150 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 13:48:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2024-11-13 13:48:20,337 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 13:48:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2024-11-13 13:48:20,338 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 18 [2024-11-13 13:48:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:20,338 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2024-11-13 13:48:20,338 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 13:48:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2024-11-13 13:48:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 13:48:20,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:20,343 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 13:48:20,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:48:20,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:20,543 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:20,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash 554372135, now seen corresponding path program 1 times [2024-11-13 13:48:20,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:20,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376402962] [2024-11-13 13:48:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:20,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:20,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:20,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:48:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:20,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:48:20,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:20,647 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 13:48:20,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:20,648 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376402962] [2024-11-13 13:48:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376402962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:20,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:48:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724018210] [2024-11-13 13:48:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:48:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:48:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:48:20,649 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 13:48:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:20,854 INFO L93 Difference]: Finished difference Result 287 states and 436 transitions. [2024-11-13 13:48:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:48:20,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 13:48:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:20,856 INFO L225 Difference]: With dead ends: 287 [2024-11-13 13:48:20,856 INFO L226 Difference]: Without dead ends: 199 [2024-11-13 13:48:20,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 13:48:20,858 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:20,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 148 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-13 13:48:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 182. [2024-11-13 13:48:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.5082872928176796) internal successors, (273), 181 states have internal predecessors, (273), 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 13:48:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 273 transitions. [2024-11-13 13:48:20,875 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 273 transitions. Word has length 19 [2024-11-13 13:48:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:20,875 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 273 transitions. [2024-11-13 13:48:20,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 13:48:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 273 transitions. [2024-11-13 13:48:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:48:20,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:20,877 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] [2024-11-13 13:48:20,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:48:21,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:21,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1982551668, now seen corresponding path program 1 times [2024-11-13 13:48:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813050872] [2024-11-13 13:48:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:21,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:21,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:21,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:48:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:21,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:48:21,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:21,171 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 13:48:21,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:21,172 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813050872] [2024-11-13 13:48:21,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813050872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:21,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:21,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:48:21,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217096906] [2024-11-13 13:48:21,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:21,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:48:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:21,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:48:21,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:48:21,173 INFO L87 Difference]: Start difference. First operand 182 states and 273 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 13:48:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:21,186 INFO L93 Difference]: Finished difference Result 188 states and 278 transitions. [2024-11-13 13:48:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:48:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2024-11-13 13:48:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:21,188 INFO L225 Difference]: With dead ends: 188 [2024-11-13 13:48:21,188 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 13:48:21,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 13:48:21,189 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 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 13:48:21,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 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 13:48:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 13:48:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 13:48:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 91 states have internal predecessors, (132), 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 13:48:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 132 transitions. [2024-11-13 13:48:21,199 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 132 transitions. Word has length 20 [2024-11-13 13:48:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:21,199 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 132 transitions. [2024-11-13 13:48:21,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 13:48:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 132 transitions. [2024-11-13 13:48:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 13:48:21,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:21,204 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 13:48:21,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:21,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:21,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 175286414, now seen corresponding path program 1 times [2024-11-13 13:48:21,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667861162] [2024-11-13 13:48:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:21,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:21,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:48:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:21,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:48:21,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:21,530 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 13:48:21,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:21,530 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:21,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667861162] [2024-11-13 13:48:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667861162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:21,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:21,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:48:21,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033345721] [2024-11-13 13:48:21,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:21,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:48:21,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:48:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:48:21,532 INFO L87 Difference]: Start difference. First operand 92 states and 132 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 13:48:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:21,670 INFO L93 Difference]: Finished difference Result 172 states and 248 transitions. [2024-11-13 13:48:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:48:21,671 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 13:48:21,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:21,672 INFO L225 Difference]: With dead ends: 172 [2024-11-13 13:48:21,673 INFO L226 Difference]: Without dead ends: 134 [2024-11-13 13:48:21,673 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 13:48:21,674 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 101 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:21,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 207 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:48:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-13 13:48:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 97. [2024-11-13 13:48:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 96 states have internal predecessors, (137), 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 13:48:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2024-11-13 13:48:21,697 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 26 [2024-11-13 13:48:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:21,697 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2024-11-13 13:48:21,701 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 13:48:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2024-11-13 13:48:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:48:21,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:21,702 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 13:48:21,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:21,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:21,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -750593339, now seen corresponding path program 1 times [2024-11-13 13:48:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956318685] [2024-11-13 13:48:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:21,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:21,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:48:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:21,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:48:21,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:22,061 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 13:48:22,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:22,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956318685] [2024-11-13 13:48:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956318685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:22,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:48:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929872614] [2024-11-13 13:48:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:22,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:48:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:48:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:48:22,063 INFO L87 Difference]: Start difference. First operand 97 states and 137 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 13:48:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:22,410 INFO L93 Difference]: Finished difference Result 207 states and 298 transitions. [2024-11-13 13:48:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:48:22,411 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 13:48:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:22,412 INFO L225 Difference]: With dead ends: 207 [2024-11-13 13:48:22,412 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 13:48:22,412 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 13:48:22,413 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 146 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:22,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 502 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:48:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 13:48:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 131. [2024-11-13 13:48:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 130 states have internal predecessors, (185), 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 13:48:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 185 transitions. [2024-11-13 13:48:22,425 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 185 transitions. Word has length 27 [2024-11-13 13:48:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:22,425 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 185 transitions. [2024-11-13 13:48:22,426 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 13:48:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 185 transitions. [2024-11-13 13:48:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:48:22,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:22,427 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 13:48:22,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:22,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:22,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:22,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1738935623, now seen corresponding path program 1 times [2024-11-13 13:48:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187704247] [2024-11-13 13:48:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:22,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:22,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:22,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:48:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:22,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:48:22,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:22,773 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 13:48:22,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:48:22,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187704247] [2024-11-13 13:48:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187704247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:48:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176351810] [2024-11-13 13:48:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:48:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:48:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:48:22,775 INFO L87 Difference]: Start difference. First operand 131 states and 185 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 13:48:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:22,941 INFO L93 Difference]: Finished difference Result 206 states and 295 transitions. [2024-11-13 13:48:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:48:22,942 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 13:48:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:22,942 INFO L225 Difference]: With dead ends: 206 [2024-11-13 13:48:22,943 INFO L226 Difference]: Without dead ends: 168 [2024-11-13 13:48:22,943 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 13:48:22,944 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:22,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 288 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:48:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-13 13:48:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 126. [2024-11-13 13:48:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.432) internal successors, (179), 125 states have internal predecessors, (179), 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 13:48:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 179 transitions. [2024-11-13 13:48:22,954 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 179 transitions. Word has length 27 [2024-11-13 13:48:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:22,954 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 179 transitions. [2024-11-13 13:48:22,954 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 13:48:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 179 transitions. [2024-11-13 13:48:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:48:22,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:22,956 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 13:48:22,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:23,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:23,157 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:23,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1522891172, now seen corresponding path program 1 times [2024-11-13 13:48:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210583248] [2024-11-13 13:48:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:23,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:23,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:23,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:48:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:23,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:48:23,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:23,308 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 13:48:23,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:23,378 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 13:48:23,378 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210583248] [2024-11-13 13:48:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210583248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:23,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:23,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 13:48:23,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664457677] [2024-11-13 13:48:23,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:23,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:48:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:48:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:48:23,381 INFO L87 Difference]: Start difference. First operand 126 states and 179 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 13:48:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:23,638 INFO L93 Difference]: Finished difference Result 442 states and 689 transitions. [2024-11-13 13:48:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:48:23,638 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 13:48:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:23,640 INFO L225 Difference]: With dead ends: 442 [2024-11-13 13:48:23,640 INFO L226 Difference]: Without dead ends: 322 [2024-11-13 13:48:23,641 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 13:48:23,641 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:23,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 52 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-13 13:48:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 293. [2024-11-13 13:48:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.4657534246575343) internal successors, (428), 292 states have internal predecessors, (428), 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 13:48:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 428 transitions. [2024-11-13 13:48:23,669 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 428 transitions. Word has length 29 [2024-11-13 13:48:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:23,670 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 428 transitions. [2024-11-13 13:48:23,670 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 13:48:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 428 transitions. [2024-11-13 13:48:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:48:23,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:23,675 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, 1] [2024-11-13 13:48:23,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:23,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:23,876 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:23,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1645981096, now seen corresponding path program 1 times [2024-11-13 13:48:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763663039] [2024-11-13 13:48:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:23,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:23,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:48:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:23,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:48:23,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:24,058 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 13:48:24,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:24,115 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 13:48:24,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763663039] [2024-11-13 13:48:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763663039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:24,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:24,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2024-11-13 13:48:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729643902] [2024-11-13 13:48:24,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:24,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:48:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:48:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:48:24,117 INFO L87 Difference]: Start difference. First operand 293 states and 428 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 13:48:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:24,313 INFO L93 Difference]: Finished difference Result 773 states and 1103 transitions. [2024-11-13 13:48:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:48:24,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 13:48:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:24,317 INFO L225 Difference]: With dead ends: 773 [2024-11-13 13:48:24,319 INFO L226 Difference]: Without dead ends: 502 [2024-11-13 13:48:24,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 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 13:48:24,320 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 93 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:24,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 44 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:48:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-13 13:48:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 397. [2024-11-13 13:48:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.457070707070707) internal successors, (577), 396 states have internal predecessors, (577), 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 13:48:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 577 transitions. [2024-11-13 13:48:24,351 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 577 transitions. Word has length 65 [2024-11-13 13:48:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:24,352 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 577 transitions. [2024-11-13 13:48:24,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 13:48:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 577 transitions. [2024-11-13 13:48:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:48:24,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:24,356 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 13:48:24,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:48:24,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:24,557 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:24,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash 598002202, now seen corresponding path program 1 times [2024-11-13 13:48:24,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:24,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848659234] [2024-11-13 13:48:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:24,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:24,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:24,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:48:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:24,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:48:24,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:48:24,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:25,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848659234] [2024-11-13 13:48:25,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848659234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:25,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2024-11-13 13:48:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286190144] [2024-11-13 13:48:25,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:25,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:48:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:48:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:48:25,340 INFO L87 Difference]: Start difference. First operand 397 states and 577 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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 13:48:25,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:25,729 INFO L93 Difference]: Finished difference Result 871 states and 1287 transitions. [2024-11-13 13:48:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:48:25,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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 13:48:25,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:25,734 INFO L225 Difference]: With dead ends: 871 [2024-11-13 13:48:25,734 INFO L226 Difference]: Without dead ends: 490 [2024-11-13 13:48:25,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 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 13:48:25,737 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 148 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:25,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 88 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:48:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2024-11-13 13:48:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 434. [2024-11-13 13:48:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.3579676674364896) internal successors, (588), 433 states have internal predecessors, (588), 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 13:48:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 588 transitions. [2024-11-13 13:48:25,796 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 588 transitions. Word has length 65 [2024-11-13 13:48:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:25,797 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 588 transitions. [2024-11-13 13:48:25,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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 13:48:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 588 transitions. [2024-11-13 13:48:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 13:48:25,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:25,799 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] [2024-11-13 13:48:25,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:48:26,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:26,003 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:26,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 530380262, now seen corresponding path program 1 times [2024-11-13 13:48:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:26,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864988489] [2024-11-13 13:48:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:26,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:26,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:26,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:48:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:26,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:48:26,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:48:26,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 13:48:26,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864988489] [2024-11-13 13:48:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864988489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:26,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 13:48:26,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302801347] [2024-11-13 13:48:26,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:26,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:48:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:48:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:48:26,281 INFO L87 Difference]: Start difference. First operand 434 states and 588 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 13:48:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:26,942 INFO L93 Difference]: Finished difference Result 1159 states and 1596 transitions. [2024-11-13 13:48:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:48:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) Word has length 69 [2024-11-13 13:48:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:26,947 INFO L225 Difference]: With dead ends: 1159 [2024-11-13 13:48:26,947 INFO L226 Difference]: Without dead ends: 737 [2024-11-13 13:48:26,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:48:26,948 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 206 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:26,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 145 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:48:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-13 13:48:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 688. [2024-11-13 13:48:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.2925764192139737) internal successors, (888), 687 states have internal predecessors, (888), 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 13:48:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 888 transitions. [2024-11-13 13:48:27,020 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 888 transitions. Word has length 69 [2024-11-13 13:48:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:27,021 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 888 transitions. [2024-11-13 13:48:27,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 13:48:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 888 transitions. [2024-11-13 13:48:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:48:27,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:27,023 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 13:48:27,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:27,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:27,223 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:27,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 36448079, now seen corresponding path program 1 times [2024-11-13 13:48:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637800774] [2024-11-13 13:48:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:27,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:27,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:27,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:48:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:27,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 13:48:27,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:31,940 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 13:48:31,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:34,927 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 13:48:34,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:34,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637800774] [2024-11-13 13:48:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637800774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:34,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:34,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45 [2024-11-13 13:48:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598326585] [2024-11-13 13:48:34,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:34,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:48:34,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:48:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1836, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:48:34,937 INFO L87 Difference]: Start difference. First operand 688 states and 888 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 13:48:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:52,700 INFO L93 Difference]: Finished difference Result 1554 states and 1985 transitions. [2024-11-13 13:48:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 13:48:52,701 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 13:48:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:52,716 INFO L225 Difference]: With dead ends: 1554 [2024-11-13 13:48:52,716 INFO L226 Difference]: Without dead ends: 1404 [2024-11-13 13:48:52,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2097, Invalid=11945, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 13:48:52,734 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 1437 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:52,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 4405 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 13:48:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-13 13:48:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1001. [2024-11-13 13:48:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.291) internal successors, (1291), 1000 states have internal predecessors, (1291), 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 13:48:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1291 transitions. [2024-11-13 13:48:52,862 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1291 transitions. Word has length 70 [2024-11-13 13:48:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:52,863 INFO L471 AbstractCegarLoop]: Abstraction has 1001 states and 1291 transitions. [2024-11-13 13:48:52,863 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 13:48:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1291 transitions. [2024-11-13 13:48:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:48:52,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:52,866 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 13:48:52,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:48:53,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:53,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:53,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1924485579, now seen corresponding path program 1 times [2024-11-13 13:48:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806608045] [2024-11-13 13:48:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:53,074 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:53,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:48:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:53,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:48:53,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:48:53,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:53,418 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 13:48:53,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:53,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806608045] [2024-11-13 13:48:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806608045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:53,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:53,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2024-11-13 13:48:53,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86620239] [2024-11-13 13:48:53,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:53,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:48:53,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:53,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:48:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:48:53,420 INFO L87 Difference]: Start difference. First operand 1001 states and 1291 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 13:48:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:53,802 INFO L93 Difference]: Finished difference Result 2265 states and 2882 transitions. [2024-11-13 13:48:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:48:53,802 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 13:48:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:53,806 INFO L225 Difference]: With dead ends: 2265 [2024-11-13 13:48:53,807 INFO L226 Difference]: Without dead ends: 1292 [2024-11-13 13:48:53,808 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 13:48:53,808 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 149 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:53,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 205 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-11-13 13:48:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 944. [2024-11-13 13:48:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 943 states have (on average 1.2778366914103925) internal successors, (1205), 943 states have internal predecessors, (1205), 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 13:48:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1205 transitions. [2024-11-13 13:48:53,893 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1205 transitions. Word has length 70 [2024-11-13 13:48:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:53,893 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1205 transitions. [2024-11-13 13:48:53,893 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 13:48:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1205 transitions. [2024-11-13 13:48:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:48:53,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:53,896 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 13:48:53,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:54,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:54,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:54,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1200573809, now seen corresponding path program 2 times [2024-11-13 13:48:54,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:54,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361425932] [2024-11-13 13:48:54,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:48:54,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:54,111 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:54,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:48:54,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:48:54,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:54,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:48:54,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:48:54,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:54,421 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 13:48:54,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:48:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361425932] [2024-11-13 13:48:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361425932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:54,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-13 13:48:54,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420351545] [2024-11-13 13:48:54,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:54,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:48:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:48:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:48:54,426 INFO L87 Difference]: Start difference. First operand 944 states and 1205 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 13:48:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:54,847 INFO L93 Difference]: Finished difference Result 1989 states and 2499 transitions. [2024-11-13 13:48:54,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:48:54,848 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 13:48:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:54,851 INFO L225 Difference]: With dead ends: 1989 [2024-11-13 13:48:54,851 INFO L226 Difference]: Without dead ends: 1073 [2024-11-13 13:48:54,853 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 13:48:54,853 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 175 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:54,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 304 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:48:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-11-13 13:48:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 824. [2024-11-13 13:48:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 1.2612393681652492) internal successors, (1038), 823 states have internal predecessors, (1038), 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 13:48:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1038 transitions. [2024-11-13 13:48:54,926 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1038 transitions. Word has length 70 [2024-11-13 13:48:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:54,927 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1038 transitions. [2024-11-13 13:48:54,927 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 13:48:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1038 transitions. [2024-11-13 13:48:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:48:54,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:54,930 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 13:48:54,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 13:48:55,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:55,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:55,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:55,133 INFO L85 PathProgramCache]: Analyzing trace with hash 100692381, now seen corresponding path program 1 times [2024-11-13 13:48:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:48:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94378177] [2024-11-13 13:48:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:55,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:55,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:55,136 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:55,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:48:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:55,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 13:48:55,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:59,632 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 13:48:59,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:03,285 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 13:49:03,285 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:49:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94378177] [2024-11-13 13:49:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94378177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:03,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:49:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2024-11-13 13:49:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930187789] [2024-11-13 13:49:03,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:03,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:49:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:49:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:49:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2017, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:49:03,288 INFO L87 Difference]: Start difference. First operand 824 states and 1038 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 13:49:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:32,995 INFO L93 Difference]: Finished difference Result 2103 states and 2606 transitions. [2024-11-13 13:49:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-13 13:49:32,996 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 13:49:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:33,002 INFO L225 Difference]: With dead ends: 2103 [2024-11-13 13:49:33,002 INFO L226 Difference]: Without dead ends: 1893 [2024-11-13 13:49:33,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5201 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=2640, Invalid=18822, Unknown=0, NotChecked=0, Total=21462 [2024-11-13 13:49:33,008 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 1405 mSDsluCounter, 5108 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 5335 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:33,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 5335 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-13 13:49:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-13 13:49:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1115. [2024-11-13 13:49:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.2477558348294435) internal successors, (1390), 1114 states have internal predecessors, (1390), 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 13:49:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1390 transitions. [2024-11-13 13:49:33,132 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1390 transitions. Word has length 74 [2024-11-13 13:49:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:33,132 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1390 transitions. [2024-11-13 13:49:33,132 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 13:49:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1390 transitions. [2024-11-13 13:49:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:49:33,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:33,135 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 13:49:33,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:49:33,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:33,339 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:33,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -256733731, now seen corresponding path program 1 times [2024-11-13 13:49:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:49:33,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818929838] [2024-11-13 13:49:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:33,342 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:33,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:49:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:33,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:49:33,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:37,444 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 13:49:37,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:42,102 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 13:49:42,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:49:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818929838] [2024-11-13 13:49:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818929838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:42,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:49:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2024-11-13 13:49:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344972555] [2024-11-13 13:49:42,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:42,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:49:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:49:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:49:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2006, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:49:42,105 INFO L87 Difference]: Start difference. First operand 1115 states and 1390 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 13:50:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:50:46,180 INFO L93 Difference]: Finished difference Result 3571 states and 4370 transitions. [2024-11-13 13:50:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-11-13 13:50:46,181 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 13:50:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:50:46,186 INFO L225 Difference]: With dead ends: 3571 [2024-11-13 13:50:46,186 INFO L226 Difference]: Without dead ends: 3063 [2024-11-13 13:50:46,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18118 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=7334, Invalid=51472, Unknown=0, NotChecked=0, Total=58806 [2024-11-13 13:50:46,195 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 1789 mSDsluCounter, 14084 mSDsCounter, 0 mSdLazyCounter, 9061 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 14738 SdHoareTripleChecker+Invalid, 9367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 9061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:50:46,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 14738 Invalid, 9367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [306 Valid, 9061 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-13 13:50:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2024-11-13 13:50:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 1765. [2024-11-13 13:50:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 1.2465986394557824) internal successors, (2199), 1764 states have internal predecessors, (2199), 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 13:50:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2199 transitions. [2024-11-13 13:50:46,399 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2199 transitions. Word has length 74 [2024-11-13 13:50:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:50:46,399 INFO L471 AbstractCegarLoop]: Abstraction has 1765 states and 2199 transitions. [2024-11-13 13:50:46,399 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 13:50:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2199 transitions. [2024-11-13 13:50:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:50:46,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:50:46,402 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 13:50:46,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:50:46,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:46,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:50:46,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash -15337942, now seen corresponding path program 1 times [2024-11-13 13:50:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:50:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630111169] [2024-11-13 13:50:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:46,606 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:50:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:46,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:50:46,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:51,601 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 13:50:51,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:56,074 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 13:50:56,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:50:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630111169] [2024-11-13 13:50:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630111169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:56,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:50:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:50:56,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552508469] [2024-11-13 13:50:56,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:56,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:50:56,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:50:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:50:56,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2283, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:50:56,076 INFO L87 Difference]: Start difference. First operand 1765 states and 2199 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 13:52:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:01,058 INFO L93 Difference]: Finished difference Result 3333 states and 4060 transitions. [2024-11-13 13:52:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2024-11-13 13:52:01,059 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 13:52:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:01,064 INFO L225 Difference]: With dead ends: 3333 [2024-11-13 13:52:01,064 INFO L226 Difference]: Without dead ends: 3129 [2024-11-13 13:52:01,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12335 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=4425, Invalid=36987, Unknown=0, NotChecked=0, Total=41412 [2024-11-13 13:52:01,068 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 1868 mSDsluCounter, 6025 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:01,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 6263 Invalid, 4115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 13:52:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-11-13 13:52:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2084. [2024-11-13 13:52:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.2347575612097936) internal successors, (2572), 2083 states have internal predecessors, (2572), 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 13:52:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2572 transitions. [2024-11-13 13:52:01,343 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2572 transitions. Word has length 77 [2024-11-13 13:52:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:01,343 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 2572 transitions. [2024-11-13 13:52:01,344 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 13:52:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2572 transitions. [2024-11-13 13:52:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:52:01,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:01,347 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 13:52:01,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:52:01,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:52:01,547 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:01,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -404033046, now seen corresponding path program 1 times [2024-11-13 13:52:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681118964] [2024-11-13 13:52:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:52:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:52:01,550 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:52:01,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:52:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:01,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:52:01,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:06,299 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 13:52:06,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:11,199 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 13:52:11,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681118964] [2024-11-13 13:52:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681118964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:52:11,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:11,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:52:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572680685] [2024-11-13 13:52:11,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:11,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:52:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:52:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2278, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:52:11,201 INFO L87 Difference]: Start difference. First operand 2084 states and 2572 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 13:53:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:14,465 INFO L93 Difference]: Finished difference Result 8496 states and 10374 transitions. [2024-11-13 13:53:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-13 13:53:14,466 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 13:53:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:14,477 INFO L225 Difference]: With dead ends: 8496 [2024-11-13 13:53:14,477 INFO L226 Difference]: Without dead ends: 6835 [2024-11-13 13:53:14,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13211 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=5445, Invalid=40137, Unknown=0, NotChecked=0, Total=45582 [2024-11-13 13:53:14,481 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 1883 mSDsluCounter, 7907 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 8243 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:14,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 8243 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-13 13:53:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2024-11-13 13:53:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 4951. [2024-11-13 13:53:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 1.2448484848484849) internal successors, (6162), 4950 states have internal predecessors, (6162), 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 13:53:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6162 transitions. [2024-11-13 13:53:14,954 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6162 transitions. Word has length 77 [2024-11-13 13:53:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:14,954 INFO L471 AbstractCegarLoop]: Abstraction has 4951 states and 6162 transitions. [2024-11-13 13:53:14,954 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 13:53:14,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6162 transitions. [2024-11-13 13:53:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:53:14,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:14,958 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 13:53:14,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:53:15,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:15,159 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:15,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash -716586330, now seen corresponding path program 2 times [2024-11-13 13:53:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:53:15,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89922374] [2024-11-13 13:53:15,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:53:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:15,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:15,162 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:15,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:53:15,257 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:53:15,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:53:15,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:53:15,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:19,481 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 13:53:19,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:23,931 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 13:53:23,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:53:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89922374] [2024-11-13 13:53:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89922374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:23,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:53:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2024-11-13 13:53:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859209062] [2024-11-13 13:53:23,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:23,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 13:53:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:53:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 13:53:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2104, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:53:23,933 INFO L87 Difference]: Start difference. First operand 4951 states and 6162 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 13:54:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:54:27,764 INFO L93 Difference]: Finished difference Result 13759 states and 16764 transitions. [2024-11-13 13:54:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-11-13 13:54:27,765 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 13:54:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:54:27,785 INFO L225 Difference]: With dead ends: 13759 [2024-11-13 13:54:27,785 INFO L226 Difference]: Without dead ends: 9224 [2024-11-13 13:54:27,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15551 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=5771, Invalid=45531, Unknown=0, NotChecked=0, Total=51302 [2024-11-13 13:54:27,791 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 2088 mSDsluCounter, 12046 mSDsCounter, 0 mSdLazyCounter, 7339 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 12539 SdHoareTripleChecker+Invalid, 7735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 7339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:54:27,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 12539 Invalid, 7735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [396 Valid, 7339 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-13 13:54:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2024-11-13 13:54:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 6355. [2024-11-13 13:54:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6355 states, 6354 states have (on average 1.2409505823103557) internal successors, (7885), 6354 states have internal predecessors, (7885), 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 13:54:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6355 states to 6355 states and 7885 transitions. [2024-11-13 13:54:28,456 INFO L78 Accepts]: Start accepts. Automaton has 6355 states and 7885 transitions. Word has length 77 [2024-11-13 13:54:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:54:28,456 INFO L471 AbstractCegarLoop]: Abstraction has 6355 states and 7885 transitions. [2024-11-13 13:54:28,456 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 13:54:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6355 states and 7885 transitions. [2024-11-13 13:54:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:54:28,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:54:28,460 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 13:54:28,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:54:28,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:54:28,661 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:54:28,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:54:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1933884296, now seen corresponding path program 1 times [2024-11-13 13:54:28,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:54:28,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529789832] [2024-11-13 13:54:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:54:28,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:54:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:54:28,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:54:28,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:54:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:54:28,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:54:28,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:54:33,385 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 13:54:33,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:54:38,455 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 13:54:38,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:54:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529789832] [2024-11-13 13:54:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529789832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:54:38,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:54:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:54:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561954539] [2024-11-13 13:54:38,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:54:38,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:54:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:54:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:54:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2294, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:54:38,458 INFO L87 Difference]: Start difference. First operand 6355 states and 7885 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 13:57:39,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:39,789 INFO L93 Difference]: Finished difference Result 11702 states and 14033 transitions. [2024-11-13 13:57:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2024-11-13 13:57:39,790 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 13:57:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:39,814 INFO L225 Difference]: With dead ends: 11702 [2024-11-13 13:57:39,814 INFO L226 Difference]: Without dead ends: 11504 [2024-11-13 13:57:39,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27493 ImplicationChecksByTransitivity, 172.5s TimeCoverageRelationStatistics Valid=6901, Invalid=72905, Unknown=0, NotChecked=0, Total=79806 [2024-11-13 13:57:39,819 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 1581 mSDsluCounter, 9558 mSDsCounter, 0 mSdLazyCounter, 6255 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 9846 SdHoareTripleChecker+Invalid, 6442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 6255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:39,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 9846 Invalid, 6442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 6255 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-13 13:57:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11504 states. [2024-11-13 13:57:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11504 to 7098. [2024-11-13 13:57:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7098 states, 7097 states have (on average 1.2364379315203606) internal successors, (8775), 7097 states have internal predecessors, (8775), 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 13:57:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 8775 transitions. [2024-11-13 13:57:40,660 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 8775 transitions. Word has length 80 [2024-11-13 13:57:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:40,660 INFO L471 AbstractCegarLoop]: Abstraction has 7098 states and 8775 transitions. [2024-11-13 13:57:40,661 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 13:57:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 8775 transitions. [2024-11-13 13:57:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:57:40,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:40,665 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 13:57:40,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 13:57:40,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:40,865 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:40,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash -953393096, now seen corresponding path program 1 times [2024-11-13 13:57:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:57:40,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752569669] [2024-11-13 13:57:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:40,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:40,867 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:40,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626f8032-a683-4071-b372-148d797a9f08/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 13:57:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:40,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:57:40,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:45,464 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 13:57:45,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:50,933 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 13:57:50,933 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:57:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752569669] [2024-11-13 13:57:50,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752569669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:50,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:57:50,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-13 13:57:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948982857] [2024-11-13 13:57:50,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:50,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 13:57:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:57:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 13:57:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2289, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 13:57:50,936 INFO L87 Difference]: Start difference. First operand 7098 states and 8775 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)