./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/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_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/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_89202efb-6675-4d5b-a1e7-b54a8589218e/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 270b49fc6fbf3a6d565e1c23dc80c7cece24e766c52320c8c625102e15c9685f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:38:14,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:38:14,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:38:14,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:38:14,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:38:14,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:38:14,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:38:14,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:38:14,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:38:14,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:38:14,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:38:14,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:38:14,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:38:14,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:38:14,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:38:14,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:38:14,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:38:14,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:38:14,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:38:14,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:38:14,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:38:14,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:38:14,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:38:14,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:38:14,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:38:14,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:38:14,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:38:14,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:38:14,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:38:14,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:38:14,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:38:14,131 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_89202efb-6675-4d5b-a1e7-b54a8589218e/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 -> 270b49fc6fbf3a6d565e1c23dc80c7cece24e766c52320c8c625102e15c9685f [2024-11-13 13:38:14,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:38:14,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:38:14,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:38:14,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:38:14,491 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:38:14,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem03_label03.c Unable to find full path for "g++" [2024-11-13 13:38:16,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:38:16,771 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:38:16,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/sv-benchmarks/c/eca-rers2012/Problem03_label03.c [2024-11-13 13:38:16,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/data/446e12b30/e23fbe29edf544bba5b589978544ac72/FLAGdd29d50f7 [2024-11-13 13:38:16,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/data/446e12b30/e23fbe29edf544bba5b589978544ac72 [2024-11-13 13:38:16,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:38:16,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:38:16,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:38:16,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:38:16,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:38:16,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:38:16" (1/1) ... [2024-11-13 13:38:16,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465a2c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:16, skipping insertion in model container [2024-11-13 13:38:16,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:38:16" (1/1) ... [2024-11-13 13:38:16,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:38:17,656 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_89202efb-6675-4d5b-a1e7-b54a8589218e/sv-benchmarks/c/eca-rers2012/Problem03_label03.c[56355,56368] [2024-11-13 13:38:17,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:38:17,733 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:38:18,034 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_89202efb-6675-4d5b-a1e7-b54a8589218e/sv-benchmarks/c/eca-rers2012/Problem03_label03.c[56355,56368] [2024-11-13 13:38:18,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:38:18,084 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:38:18,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18 WrapperNode [2024-11-13 13:38:18,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:38:18,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:38:18,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:38:18,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:38:18,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,254 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-13 13:38:18,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:38:18,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:38:18,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:38:18,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:38:18,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,343 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 13:38:18,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:38:18,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:38:18,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:38:18,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:38:18,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (1/1) ... [2024-11-13 13:38:18,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:38:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:18,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:38:18,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:38:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:38:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:38:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:38:18,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:38:18,622 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:38:18,624 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:38:21,339 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-13 13:38:21,339 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:38:21,368 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:38:21,371 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:38:21,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:38:21 BoogieIcfgContainer [2024-11-13 13:38:21,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:38:21,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:38:21,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:38:21,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:38:21,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:38:16" (1/3) ... [2024-11-13 13:38:21,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a75c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:38:21, skipping insertion in model container [2024-11-13 13:38:21,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:18" (2/3) ... [2024-11-13 13:38:21,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a75c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:38:21, skipping insertion in model container [2024-11-13 13:38:21,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:38:21" (3/3) ... [2024-11-13 13:38:21,384 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label03.c [2024-11-13 13:38:21,402 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:38:21,405 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label03.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:38:21,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:38:21,501 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;@72d06f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:38:21,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:38:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-13 13:38:21,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:21,523 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, 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, 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, 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, 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 13:38:21,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:21,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:21,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1852497550, now seen corresponding path program 1 times [2024-11-13 13:38:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585477444] [2024-11-13 13:38:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:21,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:22,946 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 13:38:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585477444] [2024-11-13 13:38:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585477444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:38:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467387701] [2024-11-13 13:38:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:22,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:22,998 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 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 13:38:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:24,590 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-13 13:38:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:24,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 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 164 [2024-11-13 13:38:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:24,613 INFO L225 Difference]: With dead ends: 810 [2024-11-13 13:38:24,613 INFO L226 Difference]: Without dead ends: 444 [2024-11-13 13:38:24,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:38:24,624 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 90 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:24,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 13:38:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-13 13:38:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-13 13:38:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-13 13:38:24,706 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 164 [2024-11-13 13:38:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:24,707 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-13 13:38:24,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 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 13:38:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-13 13:38:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-13 13:38:24,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:24,713 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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 13:38:24,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:38:24,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:24,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash 476521233, now seen corresponding path program 1 times [2024-11-13 13:38:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:24,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587052456] [2024-11-13 13:38:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587052456] [2024-11-13 13:38:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587052456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:25,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:38:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092576204] [2024-11-13 13:38:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:25,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:25,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:25,060 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:26,193 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-13 13:38:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-11-13 13:38:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:26,197 INFO L225 Difference]: With dead ends: 1312 [2024-11-13 13:38:26,198 INFO L226 Difference]: Without dead ends: 870 [2024-11-13 13:38:26,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:38:26,200 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:26,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:38:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-13 13:38:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-13 13:38:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2024-11-13 13:38:26,237 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 172 [2024-11-13 13:38:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:26,237 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2024-11-13 13:38:26,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2024-11-13 13:38:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 13:38:26,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:26,242 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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 13:38:26,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:38:26,243 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:26,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1636046117, now seen corresponding path program 1 times [2024-11-13 13:38:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906237222] [2024-11-13 13:38:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:26,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:38:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906237222] [2024-11-13 13:38:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906237222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:26,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:26,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:38:26,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470866094] [2024-11-13 13:38:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:26,656 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:27,775 INFO L93 Difference]: Finished difference Result 2530 states and 3532 transitions. [2024-11-13 13:38:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 179 [2024-11-13 13:38:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:27,788 INFO L225 Difference]: With dead ends: 2530 [2024-11-13 13:38:27,788 INFO L226 Difference]: Without dead ends: 1676 [2024-11-13 13:38:27,790 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 13:38:27,791 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 101 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:27,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 357 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:38:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2024-11-13 13:38:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1671. [2024-11-13 13:38:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 1.3323353293413174) internal successors, (2225), 1670 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2225 transitions. [2024-11-13 13:38:27,846 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2225 transitions. Word has length 179 [2024-11-13 13:38:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:27,848 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 2225 transitions. [2024-11-13 13:38:27,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2225 transitions. [2024-11-13 13:38:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 13:38:27,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:27,862 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 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, 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, 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, 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 13:38:27,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:38:27,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:27,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 335506247, now seen corresponding path program 1 times [2024-11-13 13:38:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210441397] [2024-11-13 13:38:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:38:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210441397] [2024-11-13 13:38:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210441397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:28,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:38:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914709535] [2024-11-13 13:38:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:28,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:28,399 INFO L87 Difference]: Start difference. First operand 1671 states and 2225 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:29,684 INFO L93 Difference]: Finished difference Result 4162 states and 5493 transitions. [2024-11-13 13:38:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:29,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 185 [2024-11-13 13:38:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:29,696 INFO L225 Difference]: With dead ends: 4162 [2024-11-13 13:38:29,696 INFO L226 Difference]: Without dead ends: 2493 [2024-11-13 13:38:29,698 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 13:38:29,703 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:29,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 368 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 13:38:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2024-11-13 13:38:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2489. [2024-11-13 13:38:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2488 states have (on average 1.2885852090032155) internal successors, (3206), 2488 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3206 transitions. [2024-11-13 13:38:29,777 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3206 transitions. Word has length 185 [2024-11-13 13:38:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:29,777 INFO L471 AbstractCegarLoop]: Abstraction has 2489 states and 3206 transitions. [2024-11-13 13:38:29,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3206 transitions. [2024-11-13 13:38:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 13:38:29,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:29,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:29,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:38:29,783 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:29,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1999978472, now seen corresponding path program 1 times [2024-11-13 13:38:29,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:29,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059148366] [2024-11-13 13:38:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:30,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059148366] [2024-11-13 13:38:30,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059148366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:30,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:30,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:38:30,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933345355] [2024-11-13 13:38:30,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:30,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:30,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:30,156 INFO L87 Difference]: Start difference. First operand 2489 states and 3206 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:31,356 INFO L93 Difference]: Finished difference Result 6227 states and 8004 transitions. [2024-11-13 13:38:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:31,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2024-11-13 13:38:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:31,368 INFO L225 Difference]: With dead ends: 6227 [2024-11-13 13:38:31,368 INFO L226 Difference]: Without dead ends: 3740 [2024-11-13 13:38:31,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:38:31,372 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 221 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:31,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 162 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:38:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2024-11-13 13:38:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3735. [2024-11-13 13:38:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 3734 states have (on average 1.279325120514194) internal successors, (4777), 3734 states have internal predecessors, (4777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 4777 transitions. [2024-11-13 13:38:31,454 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 4777 transitions. Word has length 192 [2024-11-13 13:38:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:31,454 INFO L471 AbstractCegarLoop]: Abstraction has 3735 states and 4777 transitions. [2024-11-13 13:38:31,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 4777 transitions. [2024-11-13 13:38:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:38:31,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:31,461 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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 13:38:31,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:38:31,461 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:31,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash -902091888, now seen corresponding path program 1 times [2024-11-13 13:38:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222495136] [2024-11-13 13:38:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:38:31,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:31,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222495136] [2024-11-13 13:38:31,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222495136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:31,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:31,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:38:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239723571] [2024-11-13 13:38:31,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:31,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:31,920 INFO L87 Difference]: Start difference. First operand 3735 states and 4777 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:33,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:33,048 INFO L93 Difference]: Finished difference Result 9119 states and 11806 transitions. [2024-11-13 13:38:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 198 [2024-11-13 13:38:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:33,066 INFO L225 Difference]: With dead ends: 9119 [2024-11-13 13:38:33,066 INFO L226 Difference]: Without dead ends: 5386 [2024-11-13 13:38:33,070 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 13:38:33,071 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 216 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:33,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 365 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:38:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2024-11-13 13:38:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 5368. [2024-11-13 13:38:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 1.2554499720514254) internal successors, (6738), 5367 states have internal predecessors, (6738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 6738 transitions. [2024-11-13 13:38:33,209 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 6738 transitions. Word has length 198 [2024-11-13 13:38:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:33,209 INFO L471 AbstractCegarLoop]: Abstraction has 5368 states and 6738 transitions. [2024-11-13 13:38:33,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 6738 transitions. [2024-11-13 13:38:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 13:38:33,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:33,217 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:33,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:38:33,218 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:33,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash 275234530, now seen corresponding path program 1 times [2024-11-13 13:38:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818772271] [2024-11-13 13:38:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:33,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818772271] [2024-11-13 13:38:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818772271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841724487] [2024-11-13 13:38:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:33,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:33,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:33,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:38:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:33,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:38:33,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:34,284 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 13:38:34,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:38:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841724487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:34,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:38:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 13:38:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056675938] [2024-11-13 13:38:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:34,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:38:34,287 INFO L87 Difference]: Start difference. First operand 5368 states and 6738 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:35,451 INFO L93 Difference]: Finished difference Result 16041 states and 20133 transitions. [2024-11-13 13:38:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:35,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 199 [2024-11-13 13:38:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:35,480 INFO L225 Difference]: With dead ends: 16041 [2024-11-13 13:38:35,480 INFO L226 Difference]: Without dead ends: 10675 [2024-11-13 13:38:35,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 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 13:38:35,487 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 97 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:35,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 187 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:38:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2024-11-13 13:38:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 10673. [2024-11-13 13:38:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10673 states, 10672 states have (on average 1.2162668665667167) internal successors, (12980), 10672 states have internal predecessors, (12980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 12980 transitions. [2024-11-13 13:38:35,698 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 12980 transitions. Word has length 199 [2024-11-13 13:38:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:35,698 INFO L471 AbstractCegarLoop]: Abstraction has 10673 states and 12980 transitions. [2024-11-13 13:38:35,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 12980 transitions. [2024-11-13 13:38:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-13 13:38:35,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:35,713 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:38:35,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:35,914 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:35,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1411296840, now seen corresponding path program 1 times [2024-11-13 13:38:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:35,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491532229] [2024-11-13 13:38:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:38:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491532229] [2024-11-13 13:38:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491532229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21867302] [2024-11-13 13:38:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:36,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:36,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:38:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:36,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:38:36,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:38:36,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:38:36,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21867302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:38:36,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 13:38:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393960875] [2024-11-13 13:38:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:36,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:36,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:38:36,745 INFO L87 Difference]: Start difference. First operand 10673 states and 12980 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 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 13:38:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:37,940 INFO L93 Difference]: Finished difference Result 27034 states and 33455 transitions. [2024-11-13 13:38:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 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 214 [2024-11-13 13:38:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:37,995 INFO L225 Difference]: With dead ends: 27034 [2024-11-13 13:38:37,995 INFO L226 Difference]: Without dead ends: 16363 [2024-11-13 13:38:38,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 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 13:38:38,007 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 222 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:38,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 409 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:38:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16363 states. [2024-11-13 13:38:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16363 to 15951. [2024-11-13 13:38:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15951 states, 15950 states have (on average 1.1742319749216301) internal successors, (18729), 15950 states have internal predecessors, (18729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 18729 transitions. [2024-11-13 13:38:38,316 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 18729 transitions. Word has length 214 [2024-11-13 13:38:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:38,316 INFO L471 AbstractCegarLoop]: Abstraction has 15951 states and 18729 transitions. [2024-11-13 13:38:38,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 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 13:38:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 18729 transitions. [2024-11-13 13:38:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-13 13:38:38,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:38,337 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:38,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:38:38,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:38,540 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:38,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1860158109, now seen corresponding path program 1 times [2024-11-13 13:38:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600481597] [2024-11-13 13:38:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:38:38,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:38,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600481597] [2024-11-13 13:38:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600481597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:38,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:38:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516233536] [2024-11-13 13:38:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:38,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:38:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:38:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:38:38,958 INFO L87 Difference]: Start difference. First operand 15951 states and 18729 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:40,748 INFO L93 Difference]: Finished difference Result 31933 states and 37521 transitions. [2024-11-13 13:38:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:38:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 228 [2024-11-13 13:38:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:40,779 INFO L225 Difference]: With dead ends: 31933 [2024-11-13 13:38:40,779 INFO L226 Difference]: Without dead ends: 15984 [2024-11-13 13:38:40,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:38:40,789 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 407 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:40,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 209 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 13:38:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15984 states. [2024-11-13 13:38:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15984 to 14732. [2024-11-13 13:38:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14732 states, 14731 states have (on average 1.177448917249338) internal successors, (17345), 14731 states have internal predecessors, (17345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14732 states to 14732 states and 17345 transitions. [2024-11-13 13:38:41,030 INFO L78 Accepts]: Start accepts. Automaton has 14732 states and 17345 transitions. Word has length 228 [2024-11-13 13:38:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:41,030 INFO L471 AbstractCegarLoop]: Abstraction has 14732 states and 17345 transitions. [2024-11-13 13:38:41,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 14732 states and 17345 transitions. [2024-11-13 13:38:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-13 13:38:41,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:41,057 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:41,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:38:41,057 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:41,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2130501843, now seen corresponding path program 1 times [2024-11-13 13:38:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:41,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842567331] [2024-11-13 13:38:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 13:38:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842567331] [2024-11-13 13:38:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842567331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55869885] [2024-11-13 13:38:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:41,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:41,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:38:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:41,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:38:41,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 13:38:42,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:38:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55869885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:38:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 13:38:42,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546024175] [2024-11-13 13:38:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:42,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:38:42,277 INFO L87 Difference]: Start difference. First operand 14732 states and 17345 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:43,304 INFO L93 Difference]: Finished difference Result 41866 states and 49368 transitions. [2024-11-13 13:38:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:43,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 235 [2024-11-13 13:38:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:43,427 INFO L225 Difference]: With dead ends: 41866 [2024-11-13 13:38:43,428 INFO L226 Difference]: Without dead ends: 27136 [2024-11-13 13:38:43,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 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 13:38:43,436 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 89 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:43,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 167 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:38:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27136 states. [2024-11-13 13:38:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27136 to 25912. [2024-11-13 13:38:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25912 states, 25911 states have (on average 1.160781135425109) internal successors, (30077), 25911 states have internal predecessors, (30077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25912 states to 25912 states and 30077 transitions. [2024-11-13 13:38:43,768 INFO L78 Accepts]: Start accepts. Automaton has 25912 states and 30077 transitions. Word has length 235 [2024-11-13 13:38:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:43,769 INFO L471 AbstractCegarLoop]: Abstraction has 25912 states and 30077 transitions. [2024-11-13 13:38:43,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25912 states and 30077 transitions. [2024-11-13 13:38:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-13 13:38:43,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:43,799 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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 13:38:43,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:38:44,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:38:44,001 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:44,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1360870442, now seen corresponding path program 1 times [2024-11-13 13:38:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:44,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472709208] [2024-11-13 13:38:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472709208] [2024-11-13 13:38:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472709208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:38:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493484183] [2024-11-13 13:38:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:44,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:44,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:38:44,259 INFO L87 Difference]: Start difference. First operand 25912 states and 30077 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:45,385 INFO L93 Difference]: Finished difference Result 59178 states and 69233 transitions. [2024-11-13 13:38:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:45,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-11-13 13:38:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:45,460 INFO L225 Difference]: With dead ends: 59178 [2024-11-13 13:38:45,460 INFO L226 Difference]: Without dead ends: 33268 [2024-11-13 13:38:45,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:38:45,482 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 168 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:45,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 203 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:38:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33268 states. [2024-11-13 13:38:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33268 to 31602. [2024-11-13 13:38:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 31601 states have (on average 1.1761653112243284) internal successors, (37168), 31601 states have internal predecessors, (37168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 37168 transitions. [2024-11-13 13:38:46,012 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 37168 transitions. Word has length 239 [2024-11-13 13:38:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:46,012 INFO L471 AbstractCegarLoop]: Abstraction has 31602 states and 37168 transitions. [2024-11-13 13:38:46,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 37168 transitions. [2024-11-13 13:38:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-13 13:38:46,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:46,038 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1] [2024-11-13 13:38:46,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:38:46,039 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:46,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1124530556, now seen corresponding path program 1 times [2024-11-13 13:38:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732331955] [2024-11-13 13:38:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:38:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732331955] [2024-11-13 13:38:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732331955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:38:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:38:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527646024] [2024-11-13 13:38:46,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:46,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:38:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:38:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:38:46,543 INFO L87 Difference]: Start difference. First operand 31602 states and 37168 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:47,785 INFO L93 Difference]: Finished difference Result 59292 states and 69903 transitions. [2024-11-13 13:38:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:38:47,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 252 [2024-11-13 13:38:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:47,843 INFO L225 Difference]: With dead ends: 59292 [2024-11-13 13:38:47,843 INFO L226 Difference]: Without dead ends: 26677 [2024-11-13 13:38:47,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:38:47,865 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 466 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:47,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 59 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:38:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26677 states. [2024-11-13 13:38:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26677 to 26675. [2024-11-13 13:38:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26675 states, 26674 states have (on average 1.104033890680063) internal successors, (29449), 26674 states have internal predecessors, (29449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26675 states to 26675 states and 29449 transitions. [2024-11-13 13:38:48,318 INFO L78 Accepts]: Start accepts. Automaton has 26675 states and 29449 transitions. Word has length 252 [2024-11-13 13:38:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:48,319 INFO L471 AbstractCegarLoop]: Abstraction has 26675 states and 29449 transitions. [2024-11-13 13:38:48,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 26675 states and 29449 transitions. [2024-11-13 13:38:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-13 13:38:48,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:48,433 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1] [2024-11-13 13:38:48,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:38:48,434 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:48,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -387943083, now seen corresponding path program 1 times [2024-11-13 13:38:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836570909] [2024-11-13 13:38:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 13:38:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836570909] [2024-11-13 13:38:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836570909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568218450] [2024-11-13 13:38:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:48,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:48,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:38:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:49,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:38:49,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:38:49,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:38:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568218450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:38:49,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:38:49,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 13:38:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057208833] [2024-11-13 13:38:49,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:38:49,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:38:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:38:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:38:49,322 INFO L87 Difference]: Start difference. First operand 26675 states and 29449 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:50,331 INFO L93 Difference]: Finished difference Result 52745 states and 58257 transitions. [2024-11-13 13:38:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:38:50,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 272 [2024-11-13 13:38:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:50,355 INFO L225 Difference]: With dead ends: 52745 [2024-11-13 13:38:50,355 INFO L226 Difference]: Without dead ends: 26072 [2024-11-13 13:38:50,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 271 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 13:38:50,366 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 100 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:50,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 275 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:38:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26072 states. [2024-11-13 13:38:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26072 to 25863. [2024-11-13 13:38:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25863 states, 25862 states have (on average 1.0986002629340346) internal successors, (28412), 25862 states have internal predecessors, (28412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25863 states to 25863 states and 28412 transitions. [2024-11-13 13:38:50,705 INFO L78 Accepts]: Start accepts. Automaton has 25863 states and 28412 transitions. Word has length 272 [2024-11-13 13:38:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:50,707 INFO L471 AbstractCegarLoop]: Abstraction has 25863 states and 28412 transitions. [2024-11-13 13:38:50,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25863 states and 28412 transitions. [2024-11-13 13:38:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-13 13:38:50,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:50,725 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:50,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:38:50,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:38:50,930 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:50,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1062888442, now seen corresponding path program 1 times [2024-11-13 13:38:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:50,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108219452] [2024-11-13 13:38:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:50,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 13:38:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108219452] [2024-11-13 13:38:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108219452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731919688] [2024-11-13 13:38:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:51,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:51,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:38:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:51,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:38:51,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 108 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:38:52,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:38:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 108 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:38:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731919688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:38:52,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:38:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-13 13:38:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435325106] [2024-11-13 13:38:52,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:38:52,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:38:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:38:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:38:52,508 INFO L87 Difference]: Start difference. First operand 25863 states and 28412 transitions. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:57,019 INFO L93 Difference]: Finished difference Result 93496 states and 103130 transitions. [2024-11-13 13:38:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:38:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 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 284 [2024-11-13 13:38:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:57,080 INFO L225 Difference]: With dead ends: 93496 [2024-11-13 13:38:57,080 INFO L226 Difference]: Without dead ends: 67229 [2024-11-13 13:38:57,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:38:57,103 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 2150 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 4398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:57,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 448 Invalid, 4398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 3930 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 13:38:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67229 states. [2024-11-13 13:38:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67229 to 64946. [2024-11-13 13:38:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64946 states, 64945 states have (on average 1.0889675879590424) internal successors, (70723), 64945 states have internal predecessors, (70723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64946 states to 64946 states and 70723 transitions. [2024-11-13 13:38:58,181 INFO L78 Accepts]: Start accepts. Automaton has 64946 states and 70723 transitions. Word has length 284 [2024-11-13 13:38:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:58,182 INFO L471 AbstractCegarLoop]: Abstraction has 64946 states and 70723 transitions. [2024-11-13 13:38:58,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 64946 states and 70723 transitions. [2024-11-13 13:38:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-13 13:38:58,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:58,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-13 13:38:58,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:38:58,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:38:58,420 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:38:58,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1317958611, now seen corresponding path program 1 times [2024-11-13 13:38:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:58,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448082268] [2024-11-13 13:38:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448082268] [2024-11-13 13:39:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448082268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:39:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480949753] [2024-11-13 13:39:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:00,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:39:00,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:39:00,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:39:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:00,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:39:00,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:01,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480949753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:01,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:39:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-13 13:39:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35304136] [2024-11-13 13:39:01,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:01,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:39:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:39:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:39:01,862 INFO L87 Difference]: Start difference. First operand 64946 states and 70723 transitions. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:06,076 INFO L93 Difference]: Finished difference Result 251574 states and 274121 transitions. [2024-11-13 13:39:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:39:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 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 303 [2024-11-13 13:39:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:06,247 INFO L225 Difference]: With dead ends: 251574 [2024-11-13 13:39:06,247 INFO L226 Difference]: Without dead ends: 182976 [2024-11-13 13:39:06,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:39:06,285 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 1552 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:06,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 497 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 13:39:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182976 states. [2024-11-13 13:39:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182976 to 121711. [2024-11-13 13:39:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121711 states, 121710 states have (on average 1.085490099416646) internal successors, (132115), 121710 states have internal predecessors, (132115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121711 states to 121711 states and 132115 transitions. [2024-11-13 13:39:08,422 INFO L78 Accepts]: Start accepts. Automaton has 121711 states and 132115 transitions. Word has length 303 [2024-11-13 13:39:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:08,422 INFO L471 AbstractCegarLoop]: Abstraction has 121711 states and 132115 transitions. [2024-11-13 13:39:08,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 121711 states and 132115 transitions. [2024-11-13 13:39:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-13 13:39:08,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:08,488 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:08,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:39:08,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89202efb-6675-4d5b-a1e7-b54a8589218e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:39:08,689 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:08,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1589432379, now seen corresponding path program 1 times [2024-11-13 13:39:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804521708] [2024-11-13 13:39:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 13:39:09,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804521708] [2024-11-13 13:39:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804521708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:39:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700001365] [2024-11-13 13:39:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:09,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:39:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:39:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:39:09,333 INFO L87 Difference]: Start difference. First operand 121711 states and 132115 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:10,595 INFO L93 Difference]: Finished difference Result 354949 states and 385521 transitions. [2024-11-13 13:39:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:39:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 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 358 [2024-11-13 13:39:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:11,114 INFO L225 Difference]: With dead ends: 354949 [2024-11-13 13:39:11,114 INFO L226 Difference]: Without dead ends: 233443 [2024-11-13 13:39:11,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:39:11,176 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 178 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:11,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:39:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233443 states. [2024-11-13 13:39:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233443 to 233401. [2024-11-13 13:39:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233401 states, 233400 states have (on average 1.0858483290488432) internal successors, (253437), 233400 states have internal predecessors, (253437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233401 states to 233401 states and 253437 transitions. [2024-11-13 13:39:14,595 INFO L78 Accepts]: Start accepts. Automaton has 233401 states and 253437 transitions. Word has length 358 [2024-11-13 13:39:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:14,596 INFO L471 AbstractCegarLoop]: Abstraction has 233401 states and 253437 transitions. [2024-11-13 13:39:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 233401 states and 253437 transitions. [2024-11-13 13:39:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-13 13:39:15,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:15,035 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:15,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:39:15,035 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:15,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1309376411, now seen corresponding path program 1 times [2024-11-13 13:39:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560117171] [2024-11-13 13:39:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-13 13:39:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560117171] [2024-11-13 13:39:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560117171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:15,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:15,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:39:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748330577] [2024-11-13 13:39:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:15,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:39:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:39:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:39:15,317 INFO L87 Difference]: Start difference. First operand 233401 states and 253437 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:17,638 INFO L93 Difference]: Finished difference Result 430548 states and 467684 transitions. [2024-11-13 13:39:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:39:17,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 371 [2024-11-13 13:39:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:17,851 INFO L225 Difference]: With dead ends: 430548 [2024-11-13 13:39:17,851 INFO L226 Difference]: Without dead ends: 196536 [2024-11-13 13:39:17,920 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 13:39:17,921 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 194 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:17,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 305 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:39:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196536 states. [2024-11-13 13:39:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196536 to 187554. [2024-11-13 13:39:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187554 states, 187553 states have (on average 1.071574434959718) internal successors, (200977), 187553 states have internal predecessors, (200977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187554 states to 187554 states and 200977 transitions. [2024-11-13 13:39:20,464 INFO L78 Accepts]: Start accepts. Automaton has 187554 states and 200977 transitions. Word has length 371 [2024-11-13 13:39:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 187554 states and 200977 transitions. [2024-11-13 13:39:20,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 187554 states and 200977 transitions. [2024-11-13 13:39:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-13 13:39:20,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:20,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-13 13:39:20,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:39:20,519 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:20,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1610748121, now seen corresponding path program 1 times [2024-11-13 13:39:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461304989] [2024-11-13 13:39:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461304989] [2024-11-13 13:39:21,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461304989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:21,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:21,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:39:21,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574285244] [2024-11-13 13:39:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:21,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:39:21,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:39:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:39:21,209 INFO L87 Difference]: Start difference. First operand 187554 states and 200977 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:23,095 INFO L93 Difference]: Finished difference Result 369446 states and 395140 transitions. [2024-11-13 13:39:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:39:23,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 377 [2024-11-13 13:39:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:23,251 INFO L225 Difference]: With dead ends: 369446 [2024-11-13 13:39:23,251 INFO L226 Difference]: Without dead ends: 171135 [2024-11-13 13:39:23,310 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 13:39:23,311 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 98 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:23,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 291 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:39:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171135 states. [2024-11-13 13:39:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171135 to 142028. [2024-11-13 13:39:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142028 states, 142027 states have (on average 1.0543206573398016) internal successors, (149742), 142027 states have internal predecessors, (149742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142028 states to 142028 states and 149742 transitions. [2024-11-13 13:39:25,832 INFO L78 Accepts]: Start accepts. Automaton has 142028 states and 149742 transitions. Word has length 377 [2024-11-13 13:39:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:25,833 INFO L471 AbstractCegarLoop]: Abstraction has 142028 states and 149742 transitions. [2024-11-13 13:39:25,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 142028 states and 149742 transitions. [2024-11-13 13:39:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-13 13:39:25,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:25,852 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-13 13:39:25,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:39:25,852 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:25,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1662636880, now seen corresponding path program 1 times [2024-11-13 13:39:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:25,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883203382] [2024-11-13 13:39:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-13 13:39:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883203382] [2024-11-13 13:39:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883203382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:39:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178961058] [2024-11-13 13:39:26,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:26,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:39:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:39:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:39:26,157 INFO L87 Difference]: Start difference. First operand 142028 states and 149742 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 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 13:39:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:28,508 INFO L93 Difference]: Finished difference Result 385499 states and 406482 transitions. [2024-11-13 13:39:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:39:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 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) Word has length 411 [2024-11-13 13:39:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:28,736 INFO L225 Difference]: With dead ends: 385499 [2024-11-13 13:39:28,736 INFO L226 Difference]: Without dead ends: 243067 [2024-11-13 13:39:28,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:39:28,790 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 566 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:28,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 300 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:39:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243067 states. [2024-11-13 13:39:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243067 to 233699. [2024-11-13 13:39:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233699 states, 233698 states have (on average 1.0553320952682521) internal successors, (246629), 233698 states have internal predecessors, (246629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233699 states to 233699 states and 246629 transitions. [2024-11-13 13:39:32,431 INFO L78 Accepts]: Start accepts. Automaton has 233699 states and 246629 transitions. Word has length 411 [2024-11-13 13:39:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:32,432 INFO L471 AbstractCegarLoop]: Abstraction has 233699 states and 246629 transitions. [2024-11-13 13:39:32,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 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 13:39:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 233699 states and 246629 transitions. [2024-11-13 13:39:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-13 13:39:32,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:32,451 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:32,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:39:32,451 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:32,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 114163086, now seen corresponding path program 1 times [2024-11-13 13:39:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889425376] [2024-11-13 13:39:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-13 13:39:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889425376] [2024-11-13 13:39:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889425376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:33,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:39:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:39:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251435030] [2024-11-13 13:39:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:33,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:39:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:39:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:39:33,529 INFO L87 Difference]: Start difference. First operand 233699 states and 246629 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:35,512 INFO L93 Difference]: Finished difference Result 472714 states and 498688 transitions. [2024-11-13 13:39:35,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:39:35,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 440 [2024-11-13 13:39:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:35,749 INFO L225 Difference]: With dead ends: 472714 [2024-11-13 13:39:35,749 INFO L226 Difference]: Without dead ends: 239220 [2024-11-13 13:39:35,832 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 13:39:35,832 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 157 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:35,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 316 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:39:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239220 states.