./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/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_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/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 64bit --witnessprinter.graph.data.programhash 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:55:45,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:55:45,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 13:55:45,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:55:45,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:55:45,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:55:45,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:55:45,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:55:45,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:55:45,604 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:55:45,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:55:45,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:55:45,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:55:45,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:55:45,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:55:45,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:55:45,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:55:45,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:55:45,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:55:45,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:55:45,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:55:45,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:55:45,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:55:45,608 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_8cb598bb-83fb-42fb-acf3-b9a95c38d325/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef [2024-11-13 13:55:45,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:55:46,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:55:46,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:55:46,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:55:46,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:55:46,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c Unable to find full path for "g++" [2024-11-13 13:55:47,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:55:48,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:55:48,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2024-11-13 13:55:48,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/data/83240479a/0129b01e9b6a4be2be6edbd8d263b73d/FLAG32e56e726 [2024-11-13 13:55:48,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/data/83240479a/0129b01e9b6a4be2be6edbd8d263b73d [2024-11-13 13:55:48,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:55:48,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:55:48,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:55:48,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:55:48,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:55:48,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:48,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcb4df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48, skipping insertion in model container [2024-11-13 13:55:48,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:48,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:55:48,622 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_8cb598bb-83fb-42fb-acf3-b9a95c38d325/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2024-11-13 13:55:48,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:55:48,779 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:55:48,790 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_8cb598bb-83fb-42fb-acf3-b9a95c38d325/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2024-11-13 13:55:48,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:55:48,921 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:55:48,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48 WrapperNode [2024-11-13 13:55:48,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:55:48,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:55:48,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:55:48,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:55:48,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:48,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,084 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 747 [2024-11-13 13:55:49,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:55:49,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:55:49,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:55:49,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:55:49,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,161 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 13:55:49,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:55:49,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:55:49,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:55:49,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:55:49,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (1/1) ... [2024-11-13 13:55:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:55:49,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:49,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:55:49,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:55:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:55:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:55:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:55:49,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:55:49,556 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:55:49,559 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:55:50,861 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-11-13 13:55:50,862 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:55:50,874 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:55:50,874 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:55:50,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:55:50 BoogieIcfgContainer [2024-11-13 13:55:50,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:55:50,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:55:50,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:55:50,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:55:50,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:55:48" (1/3) ... [2024-11-13 13:55:50,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23549d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:55:50, skipping insertion in model container [2024-11-13 13:55:50,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:48" (2/3) ... [2024-11-13 13:55:50,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23549d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:55:50, skipping insertion in model container [2024-11-13 13:55:50,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:55:50" (3/3) ... [2024-11-13 13:55:50,886 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2024-11-13 13:55:50,904 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:55:50,907 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c that has 1 procedures, 142 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:55:50,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:55:50,998 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;@2746bdfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:55:50,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:55:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 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 13:55:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:55:51,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:51,013 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] [2024-11-13 13:55:51,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:51,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 387884158, now seen corresponding path program 1 times [2024-11-13 13:55:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:51,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807009638] [2024-11-13 13:55:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:51,906 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 13:55:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807009638] [2024-11-13 13:55:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807009638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:55:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35850930] [2024-11-13 13:55:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:51,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:55:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:55:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:51,945 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 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) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:52,020 INFO L93 Difference]: Finished difference Result 229 states and 339 transitions. [2024-11-13 13:55:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:55:52,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 13:55:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:52,036 INFO L225 Difference]: With dead ends: 229 [2024-11-13 13:55:52,036 INFO L226 Difference]: Without dead ends: 141 [2024-11-13 13:55:52,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:52,044 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:52,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-13 13:55:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-13 13:55:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2024-11-13 13:55:52,080 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 41 [2024-11-13 13:55:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:52,080 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2024-11-13 13:55:52,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2024-11-13 13:55:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 13:55:52,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:52,082 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] [2024-11-13 13:55:52,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:55:52,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:52,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash -858797603, now seen corresponding path program 1 times [2024-11-13 13:55:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:52,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804725795] [2024-11-13 13:55:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:52,416 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 13:55:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804725795] [2024-11-13 13:55:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804725795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:52,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:55:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921695301] [2024-11-13 13:55:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:52,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:55:52,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:55:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:52,419 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:52,479 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-13 13:55:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:55:52,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-13 13:55:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:52,484 INFO L225 Difference]: With dead ends: 230 [2024-11-13 13:55:52,484 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 13:55:52,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:52,485 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:52,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 13:55:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-13 13:55:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.471830985915493) internal successors, (209), 142 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 13:55:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2024-11-13 13:55:52,502 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 42 [2024-11-13 13:55:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:52,502 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2024-11-13 13:55:52,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2024-11-13 13:55:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 13:55:52,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:52,504 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] [2024-11-13 13:55:52,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:55:52,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:52,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1950887625, now seen corresponding path program 1 times [2024-11-13 13:55:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783134239] [2024-11-13 13:55:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:53,114 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 13:55:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783134239] [2024-11-13 13:55:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783134239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:53,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:53,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:55:53,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305943566] [2024-11-13 13:55:53,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:53,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:55:53,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:55:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:53,116 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:53,161 INFO L93 Difference]: Finished difference Result 232 states and 338 transitions. [2024-11-13 13:55:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:55:53,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 13:55:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:53,163 INFO L225 Difference]: With dead ends: 232 [2024-11-13 13:55:53,166 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 13:55:53,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:55:53,167 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 6 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:53,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 587 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 13:55:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-13 13:55:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2024-11-13 13:55:53,183 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 43 [2024-11-13 13:55:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:53,183 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2024-11-13 13:55:53,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2024-11-13 13:55:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:55:53,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:53,186 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] [2024-11-13 13:55:53,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:55:53,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:53,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash 560912804, now seen corresponding path program 1 times [2024-11-13 13:55:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254393844] [2024-11-13 13:55:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:53,844 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 13:55:53,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:53,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254393844] [2024-11-13 13:55:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254393844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:53,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:55:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697941935] [2024-11-13 13:55:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:53,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:55:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:55:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:55:53,848 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:54,054 INFO L93 Difference]: Finished difference Result 242 states and 350 transitions. [2024-11-13 13:55:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:55:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-13 13:55:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:54,056 INFO L225 Difference]: With dead ends: 242 [2024-11-13 13:55:54,056 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 13:55:54,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:55:54,058 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 192 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:54,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1162 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:55:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 13:55:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2024-11-13 13:55:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 151 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 220 transitions. [2024-11-13 13:55:54,080 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 220 transitions. Word has length 44 [2024-11-13 13:55:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:54,081 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 220 transitions. [2024-11-13 13:55:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 220 transitions. [2024-11-13 13:55:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:55:54,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:54,082 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] [2024-11-13 13:55:54,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:55:54,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:54,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash 527774260, now seen corresponding path program 1 times [2024-11-13 13:55:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:54,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500064237] [2024-11-13 13:55:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:54,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:55:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500064237] [2024-11-13 13:55:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500064237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:55:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842488668] [2024-11-13 13:55:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:54,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:55:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:55:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:55:54,919 INFO L87 Difference]: Start difference. First operand 152 states and 220 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:55,297 INFO L93 Difference]: Finished difference Result 255 states and 367 transitions. [2024-11-13 13:55:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:55:55,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-13 13:55:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:55,299 INFO L225 Difference]: With dead ends: 255 [2024-11-13 13:55:55,299 INFO L226 Difference]: Without dead ends: 157 [2024-11-13 13:55:55,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:55:55,300 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 195 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:55,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1253 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:55:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-13 13:55:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-13 13:55:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2024-11-13 13:55:55,316 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 45 [2024-11-13 13:55:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:55,316 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2024-11-13 13:55:55,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2024-11-13 13:55:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:55:55,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:55,322 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] [2024-11-13 13:55:55,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:55:55,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:55,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:55,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1053569225, now seen corresponding path program 1 times [2024-11-13 13:55:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:55,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870073565] [2024-11-13 13:55:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:55,563 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 13:55:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870073565] [2024-11-13 13:55:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870073565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:55,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:55,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:55:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647347709] [2024-11-13 13:55:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:55,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:55:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:55:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:55:55,565 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:55,980 INFO L93 Difference]: Finished difference Result 287 states and 406 transitions. [2024-11-13 13:55:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:55:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-13 13:55:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:55,982 INFO L225 Difference]: With dead ends: 287 [2024-11-13 13:55:55,982 INFO L226 Difference]: Without dead ends: 185 [2024-11-13 13:55:55,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:55:55,983 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 234 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:55,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 630 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:55:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-13 13:55:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 158. [2024-11-13 13:55:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4458598726114649) internal successors, (227), 157 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 227 transitions. [2024-11-13 13:55:55,998 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 227 transitions. Word has length 45 [2024-11-13 13:55:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:56,000 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 227 transitions. [2024-11-13 13:55:56,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 227 transitions. [2024-11-13 13:55:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:55:56,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:56,002 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] [2024-11-13 13:55:56,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:55:56,002 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:56,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 745678211, now seen corresponding path program 1 times [2024-11-13 13:55:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214797103] [2024-11-13 13:55:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:56,411 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 13:55:56,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214797103] [2024-11-13 13:55:56,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214797103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:56,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:56,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:55:56,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017384049] [2024-11-13 13:55:56,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:56,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:55:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:55:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:55:56,414 INFO L87 Difference]: Start difference. First operand 158 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:56,481 INFO L93 Difference]: Finished difference Result 266 states and 380 transitions. [2024-11-13 13:55:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:55:56,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-13 13:55:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:56,483 INFO L225 Difference]: With dead ends: 266 [2024-11-13 13:55:56,483 INFO L226 Difference]: Without dead ends: 164 [2024-11-13 13:55:56,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:55:56,484 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 175 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:56,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 589 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-13 13:55:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-13 13:55:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 163 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 233 transitions. [2024-11-13 13:55:56,491 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 233 transitions. Word has length 46 [2024-11-13 13:55:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:56,491 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 233 transitions. [2024-11-13 13:55:56,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 233 transitions. [2024-11-13 13:55:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:55:56,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:56,497 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] [2024-11-13 13:55:56,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:55:56,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:56,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1691991601, now seen corresponding path program 1 times [2024-11-13 13:55:56,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:56,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516967517] [2024-11-13 13:55:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:56,794 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 13:55:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516967517] [2024-11-13 13:55:56,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516967517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:56,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:56,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:55:56,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515486268] [2024-11-13 13:55:56,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:56,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:55:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:55:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:55:56,800 INFO L87 Difference]: Start difference. First operand 164 states and 233 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:57,186 INFO L93 Difference]: Finished difference Result 296 states and 415 transitions. [2024-11-13 13:55:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:55:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-13 13:55:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:57,188 INFO L225 Difference]: With dead ends: 296 [2024-11-13 13:55:57,188 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 13:55:57,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:55:57,189 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 238 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:57,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 634 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:55:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 13:55:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 166. [2024-11-13 13:55:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.4242424242424243) internal successors, (235), 165 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2024-11-13 13:55:57,196 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 47 [2024-11-13 13:55:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:57,196 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2024-11-13 13:55:57,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:55:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2024-11-13 13:55:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 13:55:57,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:57,199 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:55:57,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:55:57,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:57,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -19459059, now seen corresponding path program 1 times [2024-11-13 13:55:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431393064] [2024-11-13 13:55:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:55:58,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431393064] [2024-11-13 13:55:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431393064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080446841] [2024-11-13 13:55:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:58,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:58,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:55:58,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:55:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:59,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 13:55:59,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:55:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:55:59,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:55:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080446841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:59,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:55:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-13 13:55:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781918848] [2024-11-13 13:55:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:59,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:55:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:55:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:55:59,734 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:00,406 INFO L93 Difference]: Finished difference Result 287 states and 401 transitions. [2024-11-13 13:56:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:56:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-13 13:56:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:00,409 INFO L225 Difference]: With dead ends: 287 [2024-11-13 13:56:00,409 INFO L226 Difference]: Without dead ends: 179 [2024-11-13 13:56:00,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:56:00,410 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 196 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:00,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 162 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:56:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-13 13:56:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2024-11-13 13:56:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.3954802259887005) internal successors, (247), 177 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 13:56:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 247 transitions. [2024-11-13 13:56:00,422 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 247 transitions. Word has length 89 [2024-11-13 13:56:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:00,423 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 247 transitions. [2024-11-13 13:56:00,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 247 transitions. [2024-11-13 13:56:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 13:56:00,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:00,426 INFO L215 NwaCegarLoop]: trace histogram [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 13:56:00,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:56:00,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 13:56:00,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:00,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1705407056, now seen corresponding path program 1 times [2024-11-13 13:56:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146615451] [2024-11-13 13:56:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:02,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146615451] [2024-11-13 13:56:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146615451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:02,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:02,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:56:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327184201] [2024-11-13 13:56:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:02,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:56:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:56:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:56:02,018 INFO L87 Difference]: Start difference. First operand 178 states and 247 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:02,698 INFO L93 Difference]: Finished difference Result 340 states and 478 transitions. [2024-11-13 13:56:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:56:02,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-11-13 13:56:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:02,699 INFO L225 Difference]: With dead ends: 340 [2024-11-13 13:56:02,700 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 13:56:02,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:56:02,701 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 338 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:02,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 435 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:56:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 13:56:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 209. [2024-11-13 13:56:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2024-11-13 13:56:02,708 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 91 [2024-11-13 13:56:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:02,708 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2024-11-13 13:56:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2024-11-13 13:56:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 13:56:02,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:02,710 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:56:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:56:02,710 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:02,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -154163266, now seen corresponding path program 1 times [2024-11-13 13:56:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869804025] [2024-11-13 13:56:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869804025] [2024-11-13 13:56:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869804025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:03,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:56:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421116931] [2024-11-13 13:56:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:03,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:56:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:56:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:56:03,737 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:04,234 INFO L93 Difference]: Finished difference Result 342 states and 479 transitions. [2024-11-13 13:56:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:56:04,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-11-13 13:56:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:04,236 INFO L225 Difference]: With dead ends: 342 [2024-11-13 13:56:04,236 INFO L226 Difference]: Without dead ends: 216 [2024-11-13 13:56:04,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:56:04,237 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 346 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:04,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 403 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:56:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-13 13:56:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 209. [2024-11-13 13:56:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3990384615384615) internal successors, (291), 208 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2024-11-13 13:56:04,246 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 92 [2024-11-13 13:56:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:04,246 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2024-11-13 13:56:04,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2024-11-13 13:56:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 13:56:04,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:04,248 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:56:04,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:56:04,248 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:04,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2142078003, now seen corresponding path program 1 times [2024-11-13 13:56:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72986447] [2024-11-13 13:56:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:06,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72986447] [2024-11-13 13:56:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72986447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:06,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:06,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:56:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224971449] [2024-11-13 13:56:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:06,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:56:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:56:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:56:06,464 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:07,290 INFO L93 Difference]: Finished difference Result 343 states and 479 transitions. [2024-11-13 13:56:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:56:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-13 13:56:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:07,291 INFO L225 Difference]: With dead ends: 343 [2024-11-13 13:56:07,291 INFO L226 Difference]: Without dead ends: 213 [2024-11-13 13:56:07,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:56:07,292 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 209 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:07,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 693 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:56:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-13 13:56:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2024-11-13 13:56:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3952380952380952) internal successors, (293), 210 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2024-11-13 13:56:07,308 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 293 transitions. Word has length 93 [2024-11-13 13:56:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:07,309 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 293 transitions. [2024-11-13 13:56:07,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 293 transitions. [2024-11-13 13:56:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 13:56:07,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:07,310 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:56:07,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:56:07,310 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:07,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 930172023, now seen corresponding path program 1 times [2024-11-13 13:56:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608224553] [2024-11-13 13:56:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:09,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608224553] [2024-11-13 13:56:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608224553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490162989] [2024-11-13 13:56:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:09,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:09,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:09,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:09,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:56:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:10,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 13:56:10,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:12,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:56:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490162989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:56:13,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:56:13,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-11-13 13:56:13,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580257569] [2024-11-13 13:56:13,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:56:13,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 13:56:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:13,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 13:56:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:56:13,785 INFO L87 Difference]: Start difference. First operand 211 states and 293 transitions. Second operand has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 31 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:18,382 INFO L93 Difference]: Finished difference Result 577 states and 799 transitions. [2024-11-13 13:56:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 13:56:18,383 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 31 states have internal predecessors, (263), 0 states have call successors, (0), 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 94 [2024-11-13 13:56:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:18,385 INFO L225 Difference]: With dead ends: 577 [2024-11-13 13:56:18,385 INFO L226 Difference]: Without dead ends: 469 [2024-11-13 13:56:18,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=555, Invalid=3477, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 13:56:18,388 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1072 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:18,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 838 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2922 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 13:56:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-13 13:56:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 318. [2024-11-13 13:56:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.4195583596214512) internal successors, (450), 317 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 450 transitions. [2024-11-13 13:56:18,419 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 450 transitions. Word has length 94 [2024-11-13 13:56:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:18,419 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 450 transitions. [2024-11-13 13:56:18,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 31 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 450 transitions. [2024-11-13 13:56:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 13:56:18,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:18,421 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:56:18,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:56:18,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:56:18,622 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:18,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash -156608743, now seen corresponding path program 1 times [2024-11-13 13:56:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59731470] [2024-11-13 13:56:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59731470] [2024-11-13 13:56:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59731470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804824705] [2024-11-13 13:56:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:21,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:21,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:21,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:56:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:21,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:56:21,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:22,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:56:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804824705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:56:22,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:56:22,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 10] total 26 [2024-11-13 13:56:22,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282699522] [2024-11-13 13:56:22,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:56:22,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:56:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:56:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:56:22,865 INFO L87 Difference]: Start difference. First operand 318 states and 450 transitions. Second operand has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:24,577 INFO L93 Difference]: Finished difference Result 541 states and 763 transitions. [2024-11-13 13:56:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:56:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 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 95 [2024-11-13 13:56:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:24,579 INFO L225 Difference]: With dead ends: 541 [2024-11-13 13:56:24,579 INFO L226 Difference]: Without dead ends: 327 [2024-11-13 13:56:24,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:56:24,581 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 824 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:24,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 697 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 13:56:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-13 13:56:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 296. [2024-11-13 13:56:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.416949152542373) internal successors, (418), 295 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 418 transitions. [2024-11-13 13:56:24,592 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 418 transitions. Word has length 95 [2024-11-13 13:56:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:24,592 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 418 transitions. [2024-11-13 13:56:24,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 418 transitions. [2024-11-13 13:56:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 13:56:24,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:24,594 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:56:24,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:56:24,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:56:24,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:24,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1204272636, now seen corresponding path program 1 times [2024-11-13 13:56:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:24,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938148305] [2024-11-13 13:56:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:26,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938148305] [2024-11-13 13:56:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938148305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224664990] [2024-11-13 13:56:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:26,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:26,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:26,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:26,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:56:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:27,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 13:56:27,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:27,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:56:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224664990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:56:28,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:56:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-13 13:56:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292098445] [2024-11-13 13:56:28,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:56:28,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:56:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:28,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:56:28,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:56:28,244 INFO L87 Difference]: Start difference. First operand 296 states and 418 transitions. Second operand has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:29,323 INFO L93 Difference]: Finished difference Result 487 states and 688 transitions. [2024-11-13 13:56:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:56:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-13 13:56:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:29,325 INFO L225 Difference]: With dead ends: 487 [2024-11-13 13:56:29,325 INFO L226 Difference]: Without dead ends: 324 [2024-11-13 13:56:29,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:56:29,326 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 755 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:29,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 479 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:56:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-13 13:56:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 298. [2024-11-13 13:56:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4141414141414141) internal successors, (420), 297 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 420 transitions. [2024-11-13 13:56:29,335 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 420 transitions. Word has length 97 [2024-11-13 13:56:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:29,335 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 420 transitions. [2024-11-13 13:56:29,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 420 transitions. [2024-11-13 13:56:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-13 13:56:29,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:29,338 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:29,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:56:29,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:56:29,542 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1348339706, now seen corresponding path program 1 times [2024-11-13 13:56:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180186198] [2024-11-13 13:56:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180186198] [2024-11-13 13:56:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180186198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:56:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136802760] [2024-11-13 13:56:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:31,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:56:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:56:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:56:31,960 INFO L87 Difference]: Start difference. First operand 298 states and 420 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:32,811 INFO L93 Difference]: Finished difference Result 794 states and 1134 transitions. [2024-11-13 13:56:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:56:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-11-13 13:56:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:32,814 INFO L225 Difference]: With dead ends: 794 [2024-11-13 13:56:32,814 INFO L226 Difference]: Without dead ends: 631 [2024-11-13 13:56:32,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:56:32,815 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 323 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:32,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 496 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:56:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-13 13:56:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 478. [2024-11-13 13:56:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.4171907756813418) internal successors, (676), 477 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 676 transitions. [2024-11-13 13:56:32,832 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 676 transitions. Word has length 139 [2024-11-13 13:56:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:32,832 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 676 transitions. [2024-11-13 13:56:32,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 676 transitions. [2024-11-13 13:56:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 13:56:32,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:32,836 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:32,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:56:32,836 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1661650772, now seen corresponding path program 1 times [2024-11-13 13:56:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293697762] [2024-11-13 13:56:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:56:35,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293697762] [2024-11-13 13:56:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293697762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:56:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036928597] [2024-11-13 13:56:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:35,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:56:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:56:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:56:35,022 INFO L87 Difference]: Start difference. First operand 478 states and 676 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:36,111 INFO L93 Difference]: Finished difference Result 953 states and 1350 transitions. [2024-11-13 13:56:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:56:36,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 140 [2024-11-13 13:56:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:36,114 INFO L225 Difference]: With dead ends: 953 [2024-11-13 13:56:36,114 INFO L226 Difference]: Without dead ends: 637 [2024-11-13 13:56:36,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:56:36,115 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 217 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:36,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 577 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:56:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-13 13:56:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 576. [2024-11-13 13:56:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.4243478260869564) internal successors, (819), 575 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 819 transitions. [2024-11-13 13:56:36,132 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 819 transitions. Word has length 140 [2024-11-13 13:56:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:36,133 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 819 transitions. [2024-11-13 13:56:36,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 819 transitions. [2024-11-13 13:56:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-13 13:56:36,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:36,135 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:36,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:56:36,135 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:36,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1044395996, now seen corresponding path program 1 times [2024-11-13 13:56:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:36,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895329164] [2024-11-13 13:56:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:36,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895329164] [2024-11-13 13:56:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895329164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:38,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:56:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870786116] [2024-11-13 13:56:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:38,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:56:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:56:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:56:38,106 INFO L87 Difference]: Start difference. First operand 576 states and 819 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:38,761 INFO L93 Difference]: Finished difference Result 1362 states and 1929 transitions. [2024-11-13 13:56:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:56:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2024-11-13 13:56:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:38,764 INFO L225 Difference]: With dead ends: 1362 [2024-11-13 13:56:38,764 INFO L226 Difference]: Without dead ends: 948 [2024-11-13 13:56:38,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:56:38,767 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 338 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:38,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 401 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:56:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-11-13 13:56:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 656. [2024-11-13 13:56:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 1.4) internal successors, (917), 655 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 917 transitions. [2024-11-13 13:56:38,791 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 917 transitions. Word has length 141 [2024-11-13 13:56:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:38,792 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 917 transitions. [2024-11-13 13:56:38,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 917 transitions. [2024-11-13 13:56:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 13:56:38,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:38,795 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:38,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:56:38,795 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:38,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 567350398, now seen corresponding path program 1 times [2024-11-13 13:56:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:38,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273463028] [2024-11-13 13:56:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273463028] [2024-11-13 13:56:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273463028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 13:56:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845034364] [2024-11-13 13:56:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:41,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:56:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:56:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:56:41,088 INFO L87 Difference]: Start difference. First operand 656 states and 917 transitions. Second operand has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 11 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:42,024 INFO L93 Difference]: Finished difference Result 1696 states and 2375 transitions. [2024-11-13 13:56:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:56:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 11 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2024-11-13 13:56:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:42,030 INFO L225 Difference]: With dead ends: 1696 [2024-11-13 13:56:42,030 INFO L226 Difference]: Without dead ends: 1212 [2024-11-13 13:56:42,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:56:42,032 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 244 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:42,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 626 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:56:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2024-11-13 13:56:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1102. [2024-11-13 13:56:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 1.391462306993642) internal successors, (1532), 1101 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1532 transitions. [2024-11-13 13:56:42,069 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1532 transitions. Word has length 142 [2024-11-13 13:56:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:42,069 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1532 transitions. [2024-11-13 13:56:42,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 11 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1532 transitions. [2024-11-13 13:56:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 13:56:42,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:42,072 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:42,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:56:42,073 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:42,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash -713053080, now seen corresponding path program 1 times [2024-11-13 13:56:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:42,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740259971] [2024-11-13 13:56:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:56:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740259971] [2024-11-13 13:56:43,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740259971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:56:43,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:56:43,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:56:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763360026] [2024-11-13 13:56:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:43,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:56:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:56:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:56:43,785 INFO L87 Difference]: Start difference. First operand 1102 states and 1532 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:44,199 INFO L93 Difference]: Finished difference Result 1846 states and 2581 transitions. [2024-11-13 13:56:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:56:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-13 13:56:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:44,203 INFO L225 Difference]: With dead ends: 1846 [2024-11-13 13:56:44,203 INFO L226 Difference]: Without dead ends: 962 [2024-11-13 13:56:44,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:56:44,205 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 265 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:44,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 179 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:56:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-13 13:56:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-11-13 13:56:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 1.3902185223725285) internal successors, (1336), 961 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1336 transitions. [2024-11-13 13:56:44,229 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1336 transitions. Word has length 142 [2024-11-13 13:56:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:44,229 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1336 transitions. [2024-11-13 13:56:44,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1336 transitions. [2024-11-13 13:56:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 13:56:44,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:44,232 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:44,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 13:56:44,232 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:44,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1286113622, now seen corresponding path program 1 times [2024-11-13 13:56:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:44,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038581210] [2024-11-13 13:56:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:44,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038581210] [2024-11-13 13:56:47,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038581210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:47,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317251383] [2024-11-13 13:56:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:47,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:47,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:48,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:56:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:49,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 13:56:49,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:50,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:56:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317251383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:56:51,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:56:51,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 16] total 36 [2024-11-13 13:56:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935245668] [2024-11-13 13:56:51,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:56:51,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:56:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:56:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:56:51,878 INFO L87 Difference]: Start difference. First operand 962 states and 1336 transitions. Second operand has 36 states, 36 states have (on average 10.416666666666666) internal successors, (375), 36 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:57,978 INFO L93 Difference]: Finished difference Result 2669 states and 3736 transitions. [2024-11-13 13:56:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-13 13:56:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.416666666666666) internal successors, (375), 36 states have internal predecessors, (375), 0 states have call successors, (0), 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 143 [2024-11-13 13:56:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:57,984 INFO L225 Difference]: With dead ends: 2669 [2024-11-13 13:56:57,985 INFO L226 Difference]: Without dead ends: 1925 [2024-11-13 13:56:57,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1176, Invalid=7196, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 13:56:57,988 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 2571 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 4767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:57,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2571 Valid, 1388 Invalid, 4767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4737 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-13 13:56:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2024-11-13 13:56:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 900. [2024-11-13 13:56:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.3971078976640712) internal successors, (1256), 899 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1256 transitions. [2024-11-13 13:56:58,021 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1256 transitions. Word has length 143 [2024-11-13 13:56:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:58,021 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1256 transitions. [2024-11-13 13:56:58,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.416666666666666) internal successors, (375), 36 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1256 transitions. [2024-11-13 13:56:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 13:56:58,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:58,025 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:58,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:56:58,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:58,225 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:58,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1359439329, now seen corresponding path program 1 times [2024-11-13 13:56:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:58,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262803029] [2024-11-13 13:56:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:01,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262803029] [2024-11-13 13:57:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262803029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113946947] [2024-11-13 13:57:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:01,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:01,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:01,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:57:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:02,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 13:57:02,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:57:02,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 50 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113946947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:03,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-13 13:57:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717033643] [2024-11-13 13:57:03,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:03,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 13:57:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 13:57:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 13:57:03,740 INFO L87 Difference]: Start difference. First operand 900 states and 1256 transitions. Second operand has 37 states, 37 states have (on average 10.243243243243244) internal successors, (379), 37 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:06,879 INFO L93 Difference]: Finished difference Result 2388 states and 3325 transitions. [2024-11-13 13:57:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 13:57:06,880 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.243243243243244) internal successors, (379), 37 states have internal predecessors, (379), 0 states have call successors, (0), 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 143 [2024-11-13 13:57:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:06,885 INFO L225 Difference]: With dead ends: 2388 [2024-11-13 13:57:06,885 INFO L226 Difference]: Without dead ends: 1646 [2024-11-13 13:57:06,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=575, Invalid=3715, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 13:57:06,889 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1733 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 3584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:06,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 1150 Invalid, 3584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 13:57:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2024-11-13 13:57:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1256. [2024-11-13 13:57:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 1.3864541832669324) internal successors, (1740), 1255 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1740 transitions. [2024-11-13 13:57:06,924 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1740 transitions. Word has length 143 [2024-11-13 13:57:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:06,924 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1740 transitions. [2024-11-13 13:57:06,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.243243243243244) internal successors, (379), 37 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1740 transitions. [2024-11-13 13:57:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-13 13:57:06,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:06,928 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:06,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:57:07,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 13:57:07,129 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:07,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2023956017, now seen corresponding path program 1 times [2024-11-13 13:57:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490043093] [2024-11-13 13:57:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:11,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490043093] [2024-11-13 13:57:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490043093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:11,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094157105] [2024-11-13 13:57:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:11,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:11,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:57:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:12,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-13 13:57:12,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:13,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094157105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:15,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 16] total 42 [2024-11-13 13:57:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826955395] [2024-11-13 13:57:15,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:15,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:57:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:15,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:57:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1452, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:57:15,438 INFO L87 Difference]: Start difference. First operand 1256 states and 1740 transitions. Second operand has 42 states, 42 states have (on average 9.80952380952381) internal successors, (412), 42 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:22,082 INFO L93 Difference]: Finished difference Result 2995 states and 4171 transitions. [2024-11-13 13:57:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 13:57:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.80952380952381) internal successors, (412), 42 states have internal predecessors, (412), 0 states have call successors, (0), 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 144 [2024-11-13 13:57:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:22,088 INFO L225 Difference]: With dead ends: 2995 [2024-11-13 13:57:22,088 INFO L226 Difference]: Without dead ends: 1950 [2024-11-13 13:57:22,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1033, Invalid=6799, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 13:57:22,091 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1023 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 6424 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 6437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:22,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2152 Invalid, 6437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 6424 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 13:57:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2024-11-13 13:57:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 846. [2024-11-13 13:57:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 1.3763313609467456) internal successors, (1163), 845 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1163 transitions. [2024-11-13 13:57:22,121 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1163 transitions. Word has length 144 [2024-11-13 13:57:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:22,121 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1163 transitions. [2024-11-13 13:57:22,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.80952380952381) internal successors, (412), 42 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1163 transitions. [2024-11-13 13:57:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-13 13:57:22,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:22,124 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:22,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:57:22,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 13:57:22,326 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:22,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1186554387, now seen corresponding path program 1 times [2024-11-13 13:57:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993889590] [2024-11-13 13:57:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:57:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993889590] [2024-11-13 13:57:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993889590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661155994] [2024-11-13 13:57:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:24,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:24,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:24,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:57:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:25,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:57:25,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:57:26,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:57:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661155994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:26,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:57:26,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-13 13:57:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067133263] [2024-11-13 13:57:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:26,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:57:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:57:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:57:26,240 INFO L87 Difference]: Start difference. First operand 846 states and 1163 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:27,256 INFO L93 Difference]: Finished difference Result 1637 states and 2258 transitions. [2024-11-13 13:57:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:57:27,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 145 [2024-11-13 13:57:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:27,259 INFO L225 Difference]: With dead ends: 1637 [2024-11-13 13:57:27,259 INFO L226 Difference]: Without dead ends: 853 [2024-11-13 13:57:27,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:57:27,260 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 163 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:27,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 434 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:57:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2024-11-13 13:57:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 848. [2024-11-13 13:57:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 1.3730814639905549) internal successors, (1163), 847 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1163 transitions. [2024-11-13 13:57:27,282 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1163 transitions. Word has length 145 [2024-11-13 13:57:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:27,283 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1163 transitions. [2024-11-13 13:57:27,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1163 transitions. [2024-11-13 13:57:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-13 13:57:27,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:27,285 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:27,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:57:27,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 13:57:27,486 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:27,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1812132318, now seen corresponding path program 1 times [2024-11-13 13:57:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730573548] [2024-11-13 13:57:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:27,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:57:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730573548] [2024-11-13 13:57:30,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730573548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:30,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:57:30,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:57:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967398861] [2024-11-13 13:57:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:30,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:57:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:57:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:57:30,907 INFO L87 Difference]: Start difference. First operand 848 states and 1163 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:31,360 INFO L93 Difference]: Finished difference Result 1478 states and 2027 transitions. [2024-11-13 13:57:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:57:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 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 145 [2024-11-13 13:57:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:31,363 INFO L225 Difference]: With dead ends: 1478 [2024-11-13 13:57:31,363 INFO L226 Difference]: Without dead ends: 786 [2024-11-13 13:57:31,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:57:31,364 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 187 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:31,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 175 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:57:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-11-13 13:57:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2024-11-13 13:57:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.3719745222929935) internal successors, (1077), 785 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1077 transitions. [2024-11-13 13:57:31,387 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1077 transitions. Word has length 145 [2024-11-13 13:57:31,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:31,387 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1077 transitions. [2024-11-13 13:57:31,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1077 transitions. [2024-11-13 13:57:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 13:57:31,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:31,393 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:31,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:57:31,394 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:31,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1744914604, now seen corresponding path program 1 times [2024-11-13 13:57:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493675143] [2024-11-13 13:57:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:34,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493675143] [2024-11-13 13:57:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493675143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417774509] [2024-11-13 13:57:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:34,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:34,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:34,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:57:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:35,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 13:57:35,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 42 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:36,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417774509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:37,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 36 [2024-11-13 13:57:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686838753] [2024-11-13 13:57:37,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:37,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:57:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:57:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:57:37,436 INFO L87 Difference]: Start difference. First operand 786 states and 1077 transitions. Second operand has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 36 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:41,449 INFO L93 Difference]: Finished difference Result 3496 states and 4750 transitions. [2024-11-13 13:57:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 13:57:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 36 states have internal predecessors, (408), 0 states have call successors, (0), 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 146 [2024-11-13 13:57:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:41,455 INFO L225 Difference]: With dead ends: 3496 [2024-11-13 13:57:41,455 INFO L226 Difference]: Without dead ends: 2866 [2024-11-13 13:57:41,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=596, Invalid=3310, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 13:57:41,457 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1026 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 5229 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 5239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:41,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2336 Invalid, 5239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 5229 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 13:57:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2024-11-13 13:57:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2052. [2024-11-13 13:57:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 1.3803022915650902) internal successors, (2831), 2051 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2831 transitions. [2024-11-13 13:57:41,516 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2831 transitions. Word has length 146 [2024-11-13 13:57:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:41,516 INFO L471 AbstractCegarLoop]: Abstraction has 2052 states and 2831 transitions. [2024-11-13 13:57:41,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 36 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2831 transitions. [2024-11-13 13:57:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 13:57:41,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:41,519 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:41,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:57:41,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 13:57:41,720 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:41,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1178244053, now seen corresponding path program 1 times [2024-11-13 13:57:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088624296] [2024-11-13 13:57:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088624296] [2024-11-13 13:57:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088624296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071135878] [2024-11-13 13:57:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:43,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:43,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:57:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:44,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 13:57:44,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:45,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071135878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:46,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2024-11-13 13:57:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184323826] [2024-11-13 13:57:46,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:46,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:57:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:57:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:57:46,292 INFO L87 Difference]: Start difference. First operand 2052 states and 2831 transitions. Second operand has 24 states, 24 states have (on average 15.791666666666666) internal successors, (379), 24 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:48,248 INFO L93 Difference]: Finished difference Result 7640 states and 10606 transitions. [2024-11-13 13:57:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 13:57:48,248 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.791666666666666) internal successors, (379), 24 states have internal predecessors, (379), 0 states have call successors, (0), 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 147 [2024-11-13 13:57:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:48,257 INFO L225 Difference]: With dead ends: 7640 [2024-11-13 13:57:48,258 INFO L226 Difference]: Without dead ends: 5684 [2024-11-13 13:57:48,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=2406, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 13:57:48,261 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 888 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:48,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 821 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 13:57:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2024-11-13 13:57:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 3132. [2024-11-13 13:57:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 1.3736825295432769) internal successors, (4301), 3131 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4301 transitions. [2024-11-13 13:57:48,353 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4301 transitions. Word has length 147 [2024-11-13 13:57:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:48,353 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 4301 transitions. [2024-11-13 13:57:48,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.791666666666666) internal successors, (379), 24 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4301 transitions. [2024-11-13 13:57:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-13 13:57:48,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:48,356 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:48,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 13:57:48,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 13:57:48,557 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:48,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -785203210, now seen corresponding path program 1 times [2024-11-13 13:57:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205067177] [2024-11-13 13:57:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:57:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205067177] [2024-11-13 13:57:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205067177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:57:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:57:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204935815] [2024-11-13 13:57:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:49,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:57:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:57:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:57:49,772 INFO L87 Difference]: Start difference. First operand 3132 states and 4301 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:50,137 INFO L93 Difference]: Finished difference Result 3796 states and 5194 transitions. [2024-11-13 13:57:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:57:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-13 13:57:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:50,146 INFO L225 Difference]: With dead ends: 3796 [2024-11-13 13:57:50,146 INFO L226 Difference]: Without dead ends: 3130 [2024-11-13 13:57:50,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:57:50,148 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 253 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:50,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 177 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:57:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2024-11-13 13:57:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 3130. [2024-11-13 13:57:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 1.3732821987855546) internal successors, (4297), 3129 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4297 transitions. [2024-11-13 13:57:50,224 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4297 transitions. Word has length 148 [2024-11-13 13:57:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:50,225 INFO L471 AbstractCegarLoop]: Abstraction has 3130 states and 4297 transitions. [2024-11-13 13:57:50,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4297 transitions. [2024-11-13 13:57:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 13:57:50,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:50,229 INFO L215 NwaCegarLoop]: trace histogram [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, 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 13:57:50,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 13:57:50,229 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:50,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1205885549, now seen corresponding path program 1 times [2024-11-13 13:57:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719218495] [2024-11-13 13:57:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:57:52,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:52,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719218495] [2024-11-13 13:57:52,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719218495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:52,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111926235] [2024-11-13 13:57:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:52,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:52,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:52,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:57:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:53,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-13 13:57:53,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:57:55,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:57:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111926235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:55,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:57:55,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2024-11-13 13:57:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533297172] [2024-11-13 13:57:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:55,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:57:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:57:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:57:55,089 INFO L87 Difference]: Start difference. First operand 3130 states and 4297 transitions. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:56,636 INFO L93 Difference]: Finished difference Result 9239 states and 12831 transitions. [2024-11-13 13:57:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:57:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 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 193 [2024-11-13 13:57:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:56,649 INFO L225 Difference]: With dead ends: 9239 [2024-11-13 13:57:56,649 INFO L226 Difference]: Without dead ends: 6217 [2024-11-13 13:57:56,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:57:56,652 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 463 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:56,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 918 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:57:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2024-11-13 13:57:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 4668. [2024-11-13 13:57:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4667 states have (on average 1.379472894793229) internal successors, (6438), 4667 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6438 transitions. [2024-11-13 13:57:56,728 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6438 transitions. Word has length 193 [2024-11-13 13:57:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:56,728 INFO L471 AbstractCegarLoop]: Abstraction has 4668 states and 6438 transitions. [2024-11-13 13:57:56,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6438 transitions. [2024-11-13 13:57:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 13:57:56,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:56,734 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:57:56,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:57:56,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:57:56,934 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:56,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:56,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1620455867, now seen corresponding path program 1 times [2024-11-13 13:57:56,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:56,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135520796] [2024-11-13 13:57:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:56,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:57:58,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135520796] [2024-11-13 13:57:58,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135520796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282871799] [2024-11-13 13:57:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:58,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:58,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:58,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:58,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:58:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:00,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:58:00,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 13:58:01,182 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:58:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282871799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:58:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:58:01,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-13 13:58:01,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911110049] [2024-11-13 13:58:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:58:01,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:58:01,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:58:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:58:01,184 INFO L87 Difference]: Start difference. First operand 4668 states and 6438 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:01,672 INFO L93 Difference]: Finished difference Result 7725 states and 10640 transitions. [2024-11-13 13:58:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:58:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 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 193 [2024-11-13 13:58:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:01,679 INFO L225 Difference]: With dead ends: 7725 [2024-11-13 13:58:01,679 INFO L226 Difference]: Without dead ends: 4700 [2024-11-13 13:58:01,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:58:01,681 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 303 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:01,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 165 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:58:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2024-11-13 13:58:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4665. [2024-11-13 13:58:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4665 states, 4664 states have (on average 1.3795025728987993) internal successors, (6434), 4664 states have internal predecessors, (6434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4665 states to 4665 states and 6434 transitions. [2024-11-13 13:58:01,746 INFO L78 Accepts]: Start accepts. Automaton has 4665 states and 6434 transitions. Word has length 193 [2024-11-13 13:58:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:58:01,747 INFO L471 AbstractCegarLoop]: Abstraction has 4665 states and 6434 transitions. [2024-11-13 13:58:01,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4665 states and 6434 transitions. [2024-11-13 13:58:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-13 13:58:01,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:58:01,751 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:58:01,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 13:58:01,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:01,952 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:58:01,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash -430908618, now seen corresponding path program 2 times [2024-11-13 13:58:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091619867] [2024-11-13 13:58:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:58:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091619867] [2024-11-13 13:58:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091619867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937819780] [2024-11-13 13:58:03,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:58:03,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:03,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:03,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:58:06,484 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:58:06,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:58:06,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 13:58:06,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:58:07,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:58:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 158 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 13:58:08,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937819780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:58:08,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:58:08,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 11] total 28 [2024-11-13 13:58:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684722498] [2024-11-13 13:58:08,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:58:08,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:58:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:08,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:58:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:58:08,154 INFO L87 Difference]: Start difference. First operand 4665 states and 6434 transitions. Second operand has 28 states, 28 states have (on average 17.964285714285715) internal successors, (503), 28 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:10,819 INFO L93 Difference]: Finished difference Result 21269 states and 29618 transitions. [2024-11-13 13:58:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 13:58:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 17.964285714285715) internal successors, (503), 28 states have internal predecessors, (503), 0 states have call successors, (0), 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 194 [2024-11-13 13:58:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:10,853 INFO L225 Difference]: With dead ends: 21269 [2024-11-13 13:58:10,853 INFO L226 Difference]: Without dead ends: 16689 [2024-11-13 13:58:10,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=581, Invalid=3451, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 13:58:10,860 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 1686 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:10,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 855 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 13:58:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16689 states. [2024-11-13 13:58:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16689 to 9198. [2024-11-13 13:58:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9198 states, 9197 states have (on average 1.3755572469283461) internal successors, (12651), 9197 states have internal predecessors, (12651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9198 states to 9198 states and 12651 transitions. [2024-11-13 13:58:11,125 INFO L78 Accepts]: Start accepts. Automaton has 9198 states and 12651 transitions. Word has length 194 [2024-11-13 13:58:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:58:11,126 INFO L471 AbstractCegarLoop]: Abstraction has 9198 states and 12651 transitions. [2024-11-13 13:58:11,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.964285714285715) internal successors, (503), 28 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9198 states and 12651 transitions. [2024-11-13 13:58:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-13 13:58:11,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:58:11,133 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:58:11,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:58:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:11,334 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:58:11,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2142060613, now seen corresponding path program 3 times [2024-11-13 13:58:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655416524] [2024-11-13 13:58:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:58:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655416524] [2024-11-13 13:58:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655416524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333352107] [2024-11-13 13:58:18,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:58:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:18,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:18,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:58:20,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:58:20,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:58:20,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-13 13:58:20,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 154 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:58:21,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:58:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 74 proven. 86 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:58:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333352107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:58:24,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:58:24,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 20] total 42 [2024-11-13 13:58:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125714502] [2024-11-13 13:58:24,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:58:24,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:58:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:58:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:58:24,081 INFO L87 Difference]: Start difference. First operand 9198 states and 12651 transitions. Second operand has 42 states, 42 states have (on average 9.5) internal successors, (399), 42 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:31,900 INFO L93 Difference]: Finished difference Result 47399 states and 65654 transitions. [2024-11-13 13:58:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 13:58:31,901 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.5) internal successors, (399), 42 states have internal predecessors, (399), 0 states have call successors, (0), 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 195 [2024-11-13 13:58:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:31,967 INFO L225 Difference]: With dead ends: 47399 [2024-11-13 13:58:31,967 INFO L226 Difference]: Without dead ends: 38305 [2024-11-13 13:58:31,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4165 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1861, Invalid=12419, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 13:58:31,985 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 1549 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 6281 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:31,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2420 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 6281 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 13:58:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2024-11-13 13:58:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 22771. [2024-11-13 13:58:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22771 states, 22770 states have (on average 1.3624066754501538) internal successors, (31022), 22770 states have internal predecessors, (31022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22771 states to 22771 states and 31022 transitions. [2024-11-13 13:58:32,549 INFO L78 Accepts]: Start accepts. Automaton has 22771 states and 31022 transitions. Word has length 195 [2024-11-13 13:58:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:58:32,549 INFO L471 AbstractCegarLoop]: Abstraction has 22771 states and 31022 transitions. [2024-11-13 13:58:32,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.5) internal successors, (399), 42 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 22771 states and 31022 transitions. [2024-11-13 13:58:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 13:58:32,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:58:32,567 INFO L215 NwaCegarLoop]: trace histogram [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, 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 13:58:32,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:58:32,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:32,768 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:58:32,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1787365533, now seen corresponding path program 1 times [2024-11-13 13:58:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125284655] [2024-11-13 13:58:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 152 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:58:34,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:34,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125284655] [2024-11-13 13:58:34,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125284655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:34,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141792045] [2024-11-13 13:58:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:34,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:34,932 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:34,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:58:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:36,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 13:58:36,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 123 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:58:37,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:58:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 149 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 13:58:38,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141792045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:58:38,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:58:38,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 12] total 25 [2024-11-13 13:58:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592586865] [2024-11-13 13:58:38,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:58:38,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:58:38,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:38,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:58:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:58:38,141 INFO L87 Difference]: Start difference. First operand 22771 states and 31022 transitions. Second operand has 25 states, 25 states have (on average 18.92) internal successors, (473), 25 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:40,897 INFO L93 Difference]: Finished difference Result 62869 states and 86241 transitions. [2024-11-13 13:58:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:58:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 18.92) internal successors, (473), 25 states have internal predecessors, (473), 0 states have call successors, (0), 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 196 [2024-11-13 13:58:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:40,960 INFO L225 Difference]: With dead ends: 62869 [2024-11-13 13:58:40,960 INFO L226 Difference]: Without dead ends: 40213 [2024-11-13 13:58:40,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:58:40,985 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 514 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:40,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1251 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:58:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40213 states. [2024-11-13 13:58:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40213 to 28422. [2024-11-13 13:58:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28422 states, 28421 states have (on average 1.3641673410506316) internal successors, (38771), 28421 states have internal predecessors, (38771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28422 states to 28422 states and 38771 transitions. [2024-11-13 13:58:41,688 INFO L78 Accepts]: Start accepts. Automaton has 28422 states and 38771 transitions. Word has length 196 [2024-11-13 13:58:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:58:41,688 INFO L471 AbstractCegarLoop]: Abstraction has 28422 states and 38771 transitions. [2024-11-13 13:58:41,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 18.92) internal successors, (473), 25 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 28422 states and 38771 transitions. [2024-11-13 13:58:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 13:58:41,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:58:41,704 INFO L215 NwaCegarLoop]: trace histogram [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, 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 13:58:41,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:58:41,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 13:58:41,905 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:58:41,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash -554457686, now seen corresponding path program 1 times [2024-11-13 13:58:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:41,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644943637] [2024-11-13 13:58:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 150 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:58:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644943637] [2024-11-13 13:58:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644943637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018335219] [2024-11-13 13:58:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:44,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:44,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:44,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:44,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:58:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:46,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 13:58:46,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:58:47,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:58:47,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018335219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:58:47,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:58:47,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-13 13:58:47,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064734351] [2024-11-13 13:58:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:58:47,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:58:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:58:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:58:47,371 INFO L87 Difference]: Start difference. First operand 28422 states and 38771 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:48,675 INFO L93 Difference]: Finished difference Result 76474 states and 104761 transitions. [2024-11-13 13:58:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:58:48,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 196 [2024-11-13 13:58:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:48,724 INFO L225 Difference]: With dead ends: 76474 [2024-11-13 13:58:48,724 INFO L226 Difference]: Without dead ends: 48178 [2024-11-13 13:58:48,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:58:48,745 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 216 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:48,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 551 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:58:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48178 states. [2024-11-13 13:58:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48178 to 38900. [2024-11-13 13:58:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38900 states, 38899 states have (on average 1.3550733952029614) internal successors, (52711), 38899 states have internal predecessors, (52711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38900 states to 38900 states and 52711 transitions. [2024-11-13 13:58:49,571 INFO L78 Accepts]: Start accepts. Automaton has 38900 states and 52711 transitions. Word has length 196 [2024-11-13 13:58:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:58:49,571 INFO L471 AbstractCegarLoop]: Abstraction has 38900 states and 52711 transitions. [2024-11-13 13:58:49,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 38900 states and 52711 transitions. [2024-11-13 13:58:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 13:58:49,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:58:49,593 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:58:49,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:58:49,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 13:58:49,794 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:58:49,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1537137527, now seen corresponding path program 1 times [2024-11-13 13:58:49,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:49,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714537392] [2024-11-13 13:58:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 150 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:58:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714537392] [2024-11-13 13:58:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714537392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620714217] [2024-11-13 13:58:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:52,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:52,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:52,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:52,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:58:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:54,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 13:58:54,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 165 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:58:54,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:58:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 107 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:58:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620714217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:58:56,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:58:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 14] total 26 [2024-11-13 13:58:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210936342] [2024-11-13 13:58:56,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:58:56,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:58:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:58:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:58:56,079 INFO L87 Difference]: Start difference. First operand 38900 states and 52711 transitions. Second operand has 26 states, 26 states have (on average 16.96153846153846) internal successors, (441), 26 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:58:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:58:59,285 INFO L93 Difference]: Finished difference Result 142193 states and 197023 transitions. [2024-11-13 13:58:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 13:58:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 16.96153846153846) internal successors, (441), 26 states have internal predecessors, (441), 0 states have call successors, (0), 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 196 [2024-11-13 13:58:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:58:59,370 INFO L225 Difference]: With dead ends: 142193 [2024-11-13 13:58:59,370 INFO L226 Difference]: Without dead ends: 103419 [2024-11-13 13:58:59,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:58:59,389 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 468 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 3720 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:58:59,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1455 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3720 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 13:58:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103419 states. [2024-11-13 13:59:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103419 to 43728. [2024-11-13 13:59:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43728 states, 43727 states have (on average 1.3596404967182747) internal successors, (59453), 43727 states have internal predecessors, (59453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43728 states to 43728 states and 59453 transitions. [2024-11-13 13:59:00,291 INFO L78 Accepts]: Start accepts. Automaton has 43728 states and 59453 transitions. Word has length 196 [2024-11-13 13:59:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:59:00,292 INFO L471 AbstractCegarLoop]: Abstraction has 43728 states and 59453 transitions. [2024-11-13 13:59:00,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.96153846153846) internal successors, (441), 26 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43728 states and 59453 transitions. [2024-11-13 13:59:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 13:59:00,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:59:00,310 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:59:00,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:59:00,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:59:00,511 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:59:00,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:59:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1583971689, now seen corresponding path program 1 times [2024-11-13 13:59:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:59:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159234316] [2024-11-13 13:59:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:59:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 13:59:05,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:59:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159234316] [2024-11-13 13:59:05,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159234316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:59:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79010375] [2024-11-13 13:59:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:05,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:59:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:59:05,742 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:59:05,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:59:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:07,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-13 13:59:07,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:59:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 150 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:59:09,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:59:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 154 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:59:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79010375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:59:10,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:59:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 12] total 37 [2024-11-13 13:59:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016106544] [2024-11-13 13:59:10,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:59:10,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 13:59:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:59:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 13:59:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 13:59:10,965 INFO L87 Difference]: Start difference. First operand 43728 states and 59453 transitions. Second operand has 37 states, 37 states have (on average 13.864864864864865) internal successors, (513), 37 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:59:20,819 INFO L93 Difference]: Finished difference Result 139431 states and 191347 transitions. [2024-11-13 13:59:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-13 13:59:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 13.864864864864865) internal successors, (513), 37 states have internal predecessors, (513), 0 states have call successors, (0), 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 197 [2024-11-13 13:59:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:59:20,913 INFO L225 Difference]: With dead ends: 139431 [2024-11-13 13:59:20,913 INFO L226 Difference]: Without dead ends: 95759 [2024-11-13 13:59:20,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10803 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2489, Invalid=27961, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 13:59:20,952 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 1470 mSDsluCounter, 3599 mSDsCounter, 0 mSdLazyCounter, 8833 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 8853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:59:20,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 3761 Invalid, 8853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 8833 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-13 13:59:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95759 states. [2024-11-13 13:59:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95759 to 61531. [2024-11-13 13:59:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61531 states, 61530 states have (on average 1.3534535998699821) internal successors, (83278), 61530 states have internal predecessors, (83278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61531 states to 61531 states and 83278 transitions. [2024-11-13 13:59:22,474 INFO L78 Accepts]: Start accepts. Automaton has 61531 states and 83278 transitions. Word has length 197 [2024-11-13 13:59:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:59:22,475 INFO L471 AbstractCegarLoop]: Abstraction has 61531 states and 83278 transitions. [2024-11-13 13:59:22,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 13.864864864864865) internal successors, (513), 37 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 61531 states and 83278 transitions. [2024-11-13 13:59:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 13:59:22,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:59:22,509 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:59:22,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:59:22,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:59:22,710 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:59:22,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:59:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 905875995, now seen corresponding path program 1 times [2024-11-13 13:59:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:59:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691827914] [2024-11-13 13:59:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:59:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:59:26,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:59:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691827914] [2024-11-13 13:59:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691827914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:59:26,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:59:26,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:59:26,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438605651] [2024-11-13 13:59:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:59:26,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:59:26,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:59:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:59:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:59:26,993 INFO L87 Difference]: Start difference. First operand 61531 states and 83278 transitions. Second operand has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:59:28,755 INFO L93 Difference]: Finished difference Result 140794 states and 190725 transitions. [2024-11-13 13:59:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:59:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 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 197 [2024-11-13 13:59:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:59:28,839 INFO L225 Difference]: With dead ends: 140794 [2024-11-13 13:59:28,839 INFO L226 Difference]: Without dead ends: 79145 [2024-11-13 13:59:28,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:59:28,877 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 314 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:59:28,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 649 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:59:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79145 states. [2024-11-13 13:59:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79145 to 67421. [2024-11-13 13:59:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67421 states, 67420 states have (on average 1.3439928804509047) internal successors, (90612), 67420 states have internal predecessors, (90612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67421 states to 67421 states and 90612 transitions. [2024-11-13 13:59:31,086 INFO L78 Accepts]: Start accepts. Automaton has 67421 states and 90612 transitions. Word has length 197 [2024-11-13 13:59:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:59:31,086 INFO L471 AbstractCegarLoop]: Abstraction has 67421 states and 90612 transitions. [2024-11-13 13:59:31,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 67421 states and 90612 transitions. [2024-11-13 13:59:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:59:31,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:59:31,102 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:59:31,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-13 13:59:31,103 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:59:31,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:59:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1156055452, now seen corresponding path program 1 times [2024-11-13 13:59:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:59:31,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295365829] [2024-11-13 13:59:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:59:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 13:59:37,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:59:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295365829] [2024-11-13 13:59:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295365829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:59:37,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:59:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:59:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252217279] [2024-11-13 13:59:37,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:59:37,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:59:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:59:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:59:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:59:37,944 INFO L87 Difference]: Start difference. First operand 67421 states and 90612 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:59:38,980 INFO L93 Difference]: Finished difference Result 134716 states and 181058 transitions. [2024-11-13 13:59:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:59:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-13 13:59:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:59:39,046 INFO L225 Difference]: With dead ends: 134716 [2024-11-13 13:59:39,046 INFO L226 Difference]: Without dead ends: 67397 [2024-11-13 13:59:39,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:59:39,072 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 193 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:59:39,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 554 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:59:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67397 states. [2024-11-13 13:59:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67397 to 67397. [2024-11-13 13:59:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67397 states, 67396 states have (on average 1.3440263517122677) internal successors, (90582), 67396 states have internal predecessors, (90582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67397 states to 67397 states and 90582 transitions. [2024-11-13 13:59:40,858 INFO L78 Accepts]: Start accepts. Automaton has 67397 states and 90582 transitions. Word has length 198 [2024-11-13 13:59:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:59:40,858 INFO L471 AbstractCegarLoop]: Abstraction has 67397 states and 90582 transitions. [2024-11-13 13:59:40,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 67397 states and 90582 transitions. [2024-11-13 13:59:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:59:40,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:59:40,868 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 13:59:40,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-13 13:59:40,868 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:59:40,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:59:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash 369698663, now seen corresponding path program 2 times [2024-11-13 13:59:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:59:40,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431203711] [2024-11-13 13:59:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:40,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:59:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 155 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:59:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:59:43,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431203711] [2024-11-13 13:59:43,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431203711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:59:43,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738690709] [2024-11-13 13:59:43,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:59:43,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:59:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:59:43,916 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:59:43,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb598bb-83fb-42fb-acf3-b9a95c38d325/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:59:47,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:59:47,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:59:47,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:59:47,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:59:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 155 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:59:48,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:59:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 126 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:59:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738690709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:59:48,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:59:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-13 13:59:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252147386] [2024-11-13 13:59:48,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:59:48,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:59:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:59:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:59:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:59:48,791 INFO L87 Difference]: Start difference. First operand 67397 states and 90582 transitions. Second operand has 23 states, 23 states have (on average 17.869565217391305) internal successors, (411), 23 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)