./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/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_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 724229db6d9b6e3f76c3763f8c47245763087e9314340a5d35172f234ffee2c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:52:27,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:52:27,339 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:52:27,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:52:27,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:52:27,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:52:27,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:52:27,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:52:27,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:52:27,400 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:52:27,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:52:27,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:52:27,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:52:27,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:52:27,401 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:52:27,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:52:27,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:52:27,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:52:27,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:52:27,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:52:27,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:52:27,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:52:27,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:52:27,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:52:27,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:52:27,405 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_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724229db6d9b6e3f76c3763f8c47245763087e9314340a5d35172f234ffee2c5 [2024-11-13 13:52:27,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:52:27,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:52:27,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:52:27,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:52:27,728 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:52:27,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c Unable to find full path for "g++" [2024-11-13 13:52:29,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:52:30,326 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:52:30,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-13 13:52:30,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/data/61664e507/6e168f31a69546c187380c26fcc9dd84/FLAGdf55e6d14 [2024-11-13 13:52:30,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/data/61664e507/6e168f31a69546c187380c26fcc9dd84 [2024-11-13 13:52:30,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:52:30,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:52:30,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:52:30,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:52:30,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:52:30,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:52:30" (1/1) ... [2024-11-13 13:52:30,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43daa4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:30, skipping insertion in model container [2024-11-13 13:52:30,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:52:30" (1/1) ... [2024-11-13 13:52:30,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:52:31,318 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_dc8ee734-2b37-4860-adee-61fdbaa66582/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c[8712,8725] [2024-11-13 13:52:31,381 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_dc8ee734-2b37-4860-adee-61fdbaa66582/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c[15648,15661] [2024-11-13 13:52:32,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:52:32,260 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:52:32,316 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_dc8ee734-2b37-4860-adee-61fdbaa66582/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c[8712,8725] [2024-11-13 13:52:32,335 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_dc8ee734-2b37-4860-adee-61fdbaa66582/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c[15648,15661] [2024-11-13 13:52:32,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:52:32,903 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:52:32,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32 WrapperNode [2024-11-13 13:52:32,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:52:32,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:52:32,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:52:32,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:52:32,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,508 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-11-13 13:52:33,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:52:33,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:52:33,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:52:33,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:52:33,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,968 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 13:52:33,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:33,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:52:34,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:52:34,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:52:34,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:52:34,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (1/1) ... [2024-11-13 13:52:34,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:52:34,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:52:34,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:52:34,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:52:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:52:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:52:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:52:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:52:34,552 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:52:34,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:52:41,038 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-13 13:52:41,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:52:41,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:52:41,073 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:52:41,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:52:41 BoogieIcfgContainer [2024-11-13 13:52:41,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:52:41,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:52:41,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:52:41,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:52:41,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:52:30" (1/3) ... [2024-11-13 13:52:41,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf0fbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:52:41, skipping insertion in model container [2024-11-13 13:52:41,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:32" (2/3) ... [2024-11-13 13:52:41,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf0fbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:52:41, skipping insertion in model container [2024-11-13 13:52:41,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:52:41" (3/3) ... [2024-11-13 13:52:41,084 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-13 13:52:41,103 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:52:41,106 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label05.c that has 1 procedures, 887 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 13:52:41,223 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:52:41,242 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;@36151c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:52:41,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:52:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 13:52:41,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:41,263 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] [2024-11-13 13:52:41,263 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:41,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1890096235, now seen corresponding path program 1 times [2024-11-13 13:52:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923415883] [2024-11-13 13:52:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:41,532 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 13:52:41,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:41,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923415883] [2024-11-13 13:52:41,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923415883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:41,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:41,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:52:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538175523] [2024-11-13 13:52:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:41,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:52:41,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:52:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:52:41,578 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:41,682 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2024-11-13 13:52:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:52:41,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-13 13:52:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:41,711 INFO L225 Difference]: With dead ends: 1743 [2024-11-13 13:52:41,711 INFO L226 Difference]: Without dead ends: 821 [2024-11-13 13:52:41,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:52:41,721 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:41,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-13 13:52:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-13 13:52:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2024-11-13 13:52:41,821 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2024-11-13 13:52:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:41,822 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2024-11-13 13:52:41,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2024-11-13 13:52:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 13:52:41,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:41,823 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] [2024-11-13 13:52:41,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:52:41,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1383802707, now seen corresponding path program 1 times [2024-11-13 13:52:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137337911] [2024-11-13 13:52:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:42,133 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 13:52:42,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137337911] [2024-11-13 13:52:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137337911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:42,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:52:42,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758861058] [2024-11-13 13:52:42,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:42,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:52:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:52:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:52:42,137 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:42,273 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2024-11-13 13:52:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:52:42,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-13 13:52:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:42,280 INFO L225 Difference]: With dead ends: 863 [2024-11-13 13:52:42,280 INFO L226 Difference]: Without dead ends: 821 [2024-11-13 13:52:42,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:52:42,282 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 0 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:42,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6168 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-13 13:52:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-13 13:52:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2024-11-13 13:52:42,323 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2024-11-13 13:52:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:42,324 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2024-11-13 13:52:42,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2024-11-13 13:52:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:52:42,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:42,326 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 13:52:42,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:52:42,327 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:42,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1814202574, now seen corresponding path program 1 times [2024-11-13 13:52:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588379437] [2024-11-13 13:52:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:42,648 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 13:52:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588379437] [2024-11-13 13:52:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588379437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407986608] [2024-11-13 13:52:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:42,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:42,650 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:42,924 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2024-11-13 13:52:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:52:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-13 13:52:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:42,930 INFO L225 Difference]: With dead ends: 1125 [2024-11-13 13:52:42,931 INFO L226 Difference]: Without dead ends: 1087 [2024-11-13 13:52:42,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:52:42,936 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6332 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6332 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:42,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6332 Valid, 2095 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-13 13:52:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2024-11-13 13:52:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2024-11-13 13:52:42,970 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2024-11-13 13:52:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:42,973 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2024-11-13 13:52:42,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2024-11-13 13:52:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:52:42,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:42,976 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 13:52:42,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:52:42,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:42,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1723747522, now seen corresponding path program 1 times [2024-11-13 13:52:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474554099] [2024-11-13 13:52:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:43,183 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 13:52:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474554099] [2024-11-13 13:52:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474554099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619898226] [2024-11-13 13:52:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:43,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:43,185 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 13:52:43,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:43,248 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2024-11-13 13:52:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:43,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 13:52:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:43,254 INFO L225 Difference]: With dead ends: 994 [2024-11-13 13:52:43,254 INFO L226 Difference]: Without dead ends: 920 [2024-11-13 13:52:43,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:43,259 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:43,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-13 13:52:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2024-11-13 13:52:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2024-11-13 13:52:43,307 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2024-11-13 13:52:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:43,307 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2024-11-13 13:52:43,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 13:52:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2024-11-13 13:52:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:52:43,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:43,310 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 13:52:43,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:52:43,310 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:43,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1657254010, now seen corresponding path program 1 times [2024-11-13 13:52:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855433109] [2024-11-13 13:52:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:43,726 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 13:52:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855433109] [2024-11-13 13:52:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855433109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:43,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843353615] [2024-11-13 13:52:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:43,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:43,730 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:43,911 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2024-11-13 13:52:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:52:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-13 13:52:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:43,917 INFO L225 Difference]: With dead ends: 1051 [2024-11-13 13:52:43,917 INFO L226 Difference]: Without dead ends: 918 [2024-11-13 13:52:43,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:52:43,920 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 1493 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:43,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-13 13:52:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2024-11-13 13:52:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2024-11-13 13:52:44,073 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2024-11-13 13:52:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:44,073 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2024-11-13 13:52:44,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2024-11-13 13:52:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:52:44,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:44,075 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 13:52:44,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:52:44,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:44,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -249989905, now seen corresponding path program 1 times [2024-11-13 13:52:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799641813] [2024-11-13 13:52:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:44,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:44,523 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 13:52:44,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799641813] [2024-11-13 13:52:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799641813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:44,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:44,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:52:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584324360] [2024-11-13 13:52:44,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:44,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:52:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:52:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:52:44,526 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:44,588 INFO L93 Difference]: Finished difference Result 924 states and 1682 transitions. [2024-11-13 13:52:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:52:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-13 13:52:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:44,597 INFO L225 Difference]: With dead ends: 924 [2024-11-13 13:52:44,598 INFO L226 Difference]: Without dead ends: 922 [2024-11-13 13:52:44,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:52:44,599 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:44,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-13 13:52:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2024-11-13 13:52:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2024-11-13 13:52:44,632 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2024-11-13 13:52:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:44,634 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2024-11-13 13:52:44,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2024-11-13 13:52:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:52:44,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:44,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:44,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:52:44,635 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:44,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1579154810, now seen corresponding path program 1 times [2024-11-13 13:52:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:44,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097606037] [2024-11-13 13:52:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:44,737 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 13:52:44,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:44,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097606037] [2024-11-13 13:52:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097606037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:44,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:44,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420639662] [2024-11-13 13:52:44,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:44,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:44,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:44,738 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:44,782 INFO L93 Difference]: Finished difference Result 1184 states and 2070 transitions. [2024-11-13 13:52:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-13 13:52:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:44,788 INFO L225 Difference]: With dead ends: 1184 [2024-11-13 13:52:44,788 INFO L226 Difference]: Without dead ends: 1045 [2024-11-13 13:52:44,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:44,789 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:44,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-11-13 13:52:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1043. [2024-11-13 13:52:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1041 states have (on average 1.781940441882805) internal successors, (1855), 1042 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1855 transitions. [2024-11-13 13:52:44,826 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1855 transitions. Word has length 48 [2024-11-13 13:52:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:44,827 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1855 transitions. [2024-11-13 13:52:44,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1855 transitions. [2024-11-13 13:52:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:52:44,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:44,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:44,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:52:44,828 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:44,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2013690746, now seen corresponding path program 1 times [2024-11-13 13:52:44,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:44,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072746237] [2024-11-13 13:52:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:44,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:44,929 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 13:52:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072746237] [2024-11-13 13:52:44,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072746237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117987814] [2024-11-13 13:52:44,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:44,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:44,930 INFO L87 Difference]: Start difference. First operand 1043 states and 1855 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:44,975 INFO L93 Difference]: Finished difference Result 1531 states and 2573 transitions. [2024-11-13 13:52:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-13 13:52:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:44,981 INFO L225 Difference]: With dead ends: 1531 [2024-11-13 13:52:44,982 INFO L226 Difference]: Without dead ends: 1271 [2024-11-13 13:52:44,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:44,983 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:44,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1626 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-13 13:52:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2024-11-13 13:52:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.718232044198895) internal successors, (2177), 1268 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2177 transitions. [2024-11-13 13:52:45,031 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2177 transitions. Word has length 48 [2024-11-13 13:52:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:45,031 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2177 transitions. [2024-11-13 13:52:45,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2177 transitions. [2024-11-13 13:52:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:52:45,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:45,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:45,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:52:45,033 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:45,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 500343686, now seen corresponding path program 1 times [2024-11-13 13:52:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808819109] [2024-11-13 13:52:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:45,132 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 13:52:45,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:45,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808819109] [2024-11-13 13:52:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808819109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:45,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:45,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173403125] [2024-11-13 13:52:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:45,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:45,134 INFO L87 Difference]: Start difference. First operand 1269 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:45,197 INFO L93 Difference]: Finished difference Result 2177 states and 3483 transitions. [2024-11-13 13:52:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-13 13:52:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:45,208 INFO L225 Difference]: With dead ends: 2177 [2024-11-13 13:52:45,208 INFO L226 Difference]: Without dead ends: 1691 [2024-11-13 13:52:45,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:45,211 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:45,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-13 13:52:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2024-11-13 13:52:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.6342620035566093) internal successors, (2757), 1688 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2757 transitions. [2024-11-13 13:52:45,275 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2757 transitions. Word has length 48 [2024-11-13 13:52:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:45,276 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2757 transitions. [2024-11-13 13:52:45,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2757 transitions. [2024-11-13 13:52:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 13:52:45,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:45,278 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:45,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:52:45,278 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:45,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1957276961, now seen corresponding path program 1 times [2024-11-13 13:52:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074767861] [2024-11-13 13:52:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:45,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:45,381 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 13:52:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074767861] [2024-11-13 13:52:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074767861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:45,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:45,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128661906] [2024-11-13 13:52:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:45,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:45,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:45,383 INFO L87 Difference]: Start difference. First operand 1689 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:45,458 INFO L93 Difference]: Finished difference Result 2656 states and 4155 transitions. [2024-11-13 13:52:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:45,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-13 13:52:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:45,468 INFO L225 Difference]: With dead ends: 2656 [2024-11-13 13:52:45,468 INFO L226 Difference]: Without dead ends: 2125 [2024-11-13 13:52:45,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:45,472 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:45,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2024-11-13 13:52:45,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2123. [2024-11-13 13:52:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2121 states have (on average 1.5836869401225837) internal successors, (3359), 2122 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3359 transitions. [2024-11-13 13:52:45,555 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3359 transitions. Word has length 50 [2024-11-13 13:52:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:45,556 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3359 transitions. [2024-11-13 13:52:45,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3359 transitions. [2024-11-13 13:52:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 13:52:45,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:45,557 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:45,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:52:45,558 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:45,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1972195708, now seen corresponding path program 1 times [2024-11-13 13:52:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:45,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406076288] [2024-11-13 13:52:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:45,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:45,823 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 13:52:45,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:45,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406076288] [2024-11-13 13:52:45,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406076288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:45,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:45,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858566843] [2024-11-13 13:52:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:45,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:52:45,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:52:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:52:45,825 INFO L87 Difference]: Start difference. First operand 2123 states and 3359 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:54,605 INFO L93 Difference]: Finished difference Result 4378 states and 7668 transitions. [2024-11-13 13:52:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:52:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-13 13:52:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:54,619 INFO L225 Difference]: With dead ends: 4378 [2024-11-13 13:52:54,620 INFO L226 Difference]: Without dead ends: 3625 [2024-11-13 13:52:54,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:52:54,622 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 2377 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:54,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 800 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-13 13:52:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2024-11-13 13:52:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3625. [2024-11-13 13:52:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3623 states have (on average 1.472536571901739) internal successors, (5335), 3624 states have internal predecessors, (5335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5335 transitions. [2024-11-13 13:52:54,730 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5335 transitions. Word has length 60 [2024-11-13 13:52:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:54,731 INFO L471 AbstractCegarLoop]: Abstraction has 3625 states and 5335 transitions. [2024-11-13 13:52:54,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5335 transitions. [2024-11-13 13:52:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:52:54,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:54,737 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:54,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:52:54,737 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:54,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1732029494, now seen corresponding path program 1 times [2024-11-13 13:52:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083814418] [2024-11-13 13:52:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:52:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083814418] [2024-11-13 13:52:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083814418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:54,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:54,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216825833] [2024-11-13 13:52:54,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:54,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:54,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:54,966 INFO L87 Difference]: Start difference. First operand 3625 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:55,228 INFO L93 Difference]: Finished difference Result 9275 states and 13292 transitions. [2024-11-13 13:52:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:52:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:52:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:55,260 INFO L225 Difference]: With dead ends: 9275 [2024-11-13 13:52:55,260 INFO L226 Difference]: Without dead ends: 7937 [2024-11-13 13:52:55,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:52:55,268 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 4708 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:55,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 3312 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2024-11-13 13:52:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4961. [2024-11-13 13:52:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4959 states have (on average 1.451703972575116) internal successors, (7199), 4960 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 7199 transitions. [2024-11-13 13:52:55,510 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 7199 transitions. Word has length 65 [2024-11-13 13:52:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:55,510 INFO L471 AbstractCegarLoop]: Abstraction has 4961 states and 7199 transitions. [2024-11-13 13:52:55,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 7199 transitions. [2024-11-13 13:52:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:52:55,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:55,514 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:55,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:52:55,515 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:55,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2128401866, now seen corresponding path program 1 times [2024-11-13 13:52:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746939673] [2024-11-13 13:52:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:52:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746939673] [2024-11-13 13:52:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746939673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:55,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509992404] [2024-11-13 13:52:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:55,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:55,717 INFO L87 Difference]: Start difference. First operand 4961 states and 7199 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:56,027 INFO L93 Difference]: Finished difference Result 10611 states and 15156 transitions. [2024-11-13 13:52:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:52:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:52:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:56,054 INFO L225 Difference]: With dead ends: 10611 [2024-11-13 13:52:56,054 INFO L226 Difference]: Without dead ends: 9273 [2024-11-13 13:52:56,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:52:56,059 INFO L432 NwaCegarLoop]: 1578 mSDtfsCounter, 4700 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:56,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 3309 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2024-11-13 13:52:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 6969. [2024-11-13 13:52:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.431749677048945) internal successors, (9975), 6968 states have internal predecessors, (9975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 9975 transitions. [2024-11-13 13:52:56,428 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 9975 transitions. Word has length 65 [2024-11-13 13:52:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:56,429 INFO L471 AbstractCegarLoop]: Abstraction has 6969 states and 9975 transitions. [2024-11-13 13:52:56,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 9975 transitions. [2024-11-13 13:52:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:52:56,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:56,431 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:56,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:52:56,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:56,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 347469002, now seen corresponding path program 1 times [2024-11-13 13:52:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:56,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815064935] [2024-11-13 13:52:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:52:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:56,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815064935] [2024-11-13 13:52:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815064935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609910439] [2024-11-13 13:52:56,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:56,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:56,613 INFO L87 Difference]: Start difference. First operand 6969 states and 9975 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:56,952 INFO L93 Difference]: Finished difference Result 11947 states and 17020 transitions. [2024-11-13 13:52:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:52:56,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:52:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:56,975 INFO L225 Difference]: With dead ends: 11947 [2024-11-13 13:52:56,976 INFO L226 Difference]: Without dead ends: 10609 [2024-11-13 13:52:56,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:52:56,981 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 4667 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:56,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3361 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2024-11-13 13:52:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 8305. [2024-11-13 13:52:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8303 states have (on average 1.4258701674093701) internal successors, (11839), 8304 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11839 transitions. [2024-11-13 13:52:57,378 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11839 transitions. Word has length 65 [2024-11-13 13:52:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:57,378 INFO L471 AbstractCegarLoop]: Abstraction has 8305 states and 11839 transitions. [2024-11-13 13:52:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11839 transitions. [2024-11-13 13:52:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:52:57,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:57,385 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:57,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:52:57,386 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:57,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:57,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1073593701, now seen corresponding path program 1 times [2024-11-13 13:52:57,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127861331] [2024-11-13 13:52:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:52:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127861331] [2024-11-13 13:52:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127861331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:52:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963822035] [2024-11-13 13:52:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:57,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:52:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:52:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:52:57,729 INFO L87 Difference]: Start difference. First operand 8305 states and 11839 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:58,052 INFO L93 Difference]: Finished difference Result 12531 states and 17860 transitions. [2024-11-13 13:52:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:52:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 67 [2024-11-13 13:52:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:58,078 INFO L225 Difference]: With dead ends: 12531 [2024-11-13 13:52:58,078 INFO L226 Difference]: Without dead ends: 11569 [2024-11-13 13:52:58,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:52:58,086 INFO L432 NwaCegarLoop]: 1582 mSDtfsCounter, 4701 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4701 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:58,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4701 Valid, 3363 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2024-11-13 13:52:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 9265. [2024-11-13 13:52:58,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 9263 states have (on average 1.4249163338011444) internal successors, (13199), 9264 states have internal predecessors, (13199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13199 transitions. [2024-11-13 13:52:58,453 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13199 transitions. Word has length 67 [2024-11-13 13:52:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:58,453 INFO L471 AbstractCegarLoop]: Abstraction has 9265 states and 13199 transitions. [2024-11-13 13:52:58,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13199 transitions. [2024-11-13 13:52:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:52:58,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:58,456 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:52:58,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:52:58,456 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:58,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash 617761666, now seen corresponding path program 1 times [2024-11-13 13:52:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:58,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780787610] [2024-11-13 13:52:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:52:58,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:58,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780787610] [2024-11-13 13:52:58,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780787610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:58,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:58,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112320000] [2024-11-13 13:52:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:58,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:58,597 INFO L87 Difference]: Start difference. First operand 9265 states and 13199 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:58,749 INFO L93 Difference]: Finished difference Result 14567 states and 20700 transitions. [2024-11-13 13:52:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-13 13:52:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:58,768 INFO L225 Difference]: With dead ends: 14567 [2024-11-13 13:52:58,768 INFO L226 Difference]: Without dead ends: 7589 [2024-11-13 13:52:58,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:58,780 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:58,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2024-11-13 13:52:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 7587. [2024-11-13 13:52:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.4313777191825972) internal successors, (10857), 7586 states have internal predecessors, (10857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 10857 transitions. [2024-11-13 13:52:59,042 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 10857 transitions. Word has length 67 [2024-11-13 13:52:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:59,042 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 10857 transitions. [2024-11-13 13:52:59,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 10857 transitions. [2024-11-13 13:52:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:52:59,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:59,044 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:59,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:52:59,044 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:59,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 722057953, now seen corresponding path program 1 times [2024-11-13 13:52:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325362761] [2024-11-13 13:52:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:52:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325362761] [2024-11-13 13:52:59,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325362761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:59,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:59,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:59,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321479537] [2024-11-13 13:52:59,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:59,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:59,175 INFO L87 Difference]: Start difference. First operand 7587 states and 10857 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:59,270 INFO L93 Difference]: Finished difference Result 10231 states and 14555 transitions. [2024-11-13 13:52:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:59,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 13:52:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:59,282 INFO L225 Difference]: With dead ends: 10231 [2024-11-13 13:52:59,282 INFO L226 Difference]: Without dead ends: 4949 [2024-11-13 13:52:59,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:59,289 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:59,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2024-11-13 13:52:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2024-11-13 13:52:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4945 states have (on average 1.439231547017189) internal successors, (7117), 4946 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7117 transitions. [2024-11-13 13:52:59,526 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7117 transitions. Word has length 68 [2024-11-13 13:52:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:59,527 INFO L471 AbstractCegarLoop]: Abstraction has 4947 states and 7117 transitions. [2024-11-13 13:52:59,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7117 transitions. [2024-11-13 13:52:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:52:59,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:59,529 INFO L215 NwaCegarLoop]: trace histogram [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 13:52:59,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:52:59,530 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:59,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1602623827, now seen corresponding path program 1 times [2024-11-13 13:52:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:52:59,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080571444] [2024-11-13 13:52:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:52:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:52:59,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:52:59,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080571444] [2024-11-13 13:52:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080571444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:59,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:52:59,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559025919] [2024-11-13 13:52:59,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:59,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:52:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:52:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:52:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:59,797 INFO L87 Difference]: Start difference. First operand 4947 states and 7117 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:59,940 INFO L93 Difference]: Finished difference Result 6271 states and 8945 transitions. [2024-11-13 13:52:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:52:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:52:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:59,950 INFO L225 Difference]: With dead ends: 6271 [2024-11-13 13:52:59,951 INFO L226 Difference]: Without dead ends: 3629 [2024-11-13 13:52:59,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:52:59,955 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:59,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:52:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2024-11-13 13:53:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3627. [2024-11-13 13:53:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3625 states have (on average 1.4535172413793103) internal successors, (5269), 3626 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5269 transitions. [2024-11-13 13:53:00,098 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5269 transitions. Word has length 70 [2024-11-13 13:53:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:00,101 INFO L471 AbstractCegarLoop]: Abstraction has 3627 states and 5269 transitions. [2024-11-13 13:53:00,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5269 transitions. [2024-11-13 13:53:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 13:53:00,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:00,104 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] [2024-11-13 13:53:00,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:53:00,104 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:00,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 772693573, now seen corresponding path program 1 times [2024-11-13 13:53:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742238779] [2024-11-13 13:53:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:00,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:00,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742238779] [2024-11-13 13:53:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742238779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:00,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547415467] [2024-11-13 13:53:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:00,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:00,270 INFO L87 Difference]: Start difference. First operand 3627 states and 5269 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:00,329 INFO L93 Difference]: Finished difference Result 4291 states and 6173 transitions. [2024-11-13 13:53:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:00,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 13:53:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:00,338 INFO L225 Difference]: With dead ends: 4291 [2024-11-13 13:53:00,338 INFO L226 Difference]: Without dead ends: 2969 [2024-11-13 13:53:00,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:00,341 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:00,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:53:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2024-11-13 13:53:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2024-11-13 13:53:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.4691399662731872) internal successors, (4356), 2966 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4356 transitions. [2024-11-13 13:53:00,406 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4356 transitions. Word has length 72 [2024-11-13 13:53:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:00,406 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 4356 transitions. [2024-11-13 13:53:00,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4356 transitions. [2024-11-13 13:53:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:53:00,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:00,408 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] [2024-11-13 13:53:00,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:53:00,409 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:00,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 141928887, now seen corresponding path program 1 times [2024-11-13 13:53:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169123572] [2024-11-13 13:53:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169123572] [2024-11-13 13:53:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169123572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451251273] [2024-11-13 13:53:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:02,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:02,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:02,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:53:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:02,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:53:02,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:03,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451251273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:04,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:04,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-13 13:53:04,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602711821] [2024-11-13 13:53:04,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:04,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:53:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:53:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:53:04,646 INFO L87 Difference]: Start difference. First operand 2967 states and 4356 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:08,842 INFO L93 Difference]: Finished difference Result 5331 states and 7540 transitions. [2024-11-13 13:53:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 13:53:08,842 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-13 13:53:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:08,852 INFO L225 Difference]: With dead ends: 5331 [2024-11-13 13:53:08,853 INFO L226 Difference]: Without dead ends: 4669 [2024-11-13 13:53:08,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=858, Invalid=3174, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 13:53:08,856 INFO L432 NwaCegarLoop]: 1493 mSDtfsCounter, 21851 mSDsluCounter, 6437 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21851 SdHoareTripleChecker+Valid, 7930 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:08,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21851 Valid, 7930 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:53:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2024-11-13 13:53:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 4606. [2024-11-13 13:53:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 4604 states have (on average 1.4144222415291052) internal successors, (6512), 4605 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6512 transitions. [2024-11-13 13:53:08,967 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6512 transitions. Word has length 74 [2024-11-13 13:53:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:08,967 INFO L471 AbstractCegarLoop]: Abstraction has 4606 states and 6512 transitions. [2024-11-13 13:53:08,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6512 transitions. [2024-11-13 13:53:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 13:53:08,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:08,969 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:53:08,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:53:09,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:09,170 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:09,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash 543758777, now seen corresponding path program 1 times [2024-11-13 13:53:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554406901] [2024-11-13 13:53:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:09,785 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 13:53:09,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:09,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554406901] [2024-11-13 13:53:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554406901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894208180] [2024-11-13 13:53:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:09,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:09,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:09,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:09,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:53:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:09,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:53:09,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:10,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:11,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894208180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:11,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-13 13:53:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368144696] [2024-11-13 13:53:11,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:11,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:53:11,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:53:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:53:11,674 INFO L87 Difference]: Start difference. First operand 4606 states and 6512 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 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 13:53:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:13,213 INFO L93 Difference]: Finished difference Result 11183 states and 15317 transitions. [2024-11-13 13:53:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:53:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-13 13:53:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:13,228 INFO L225 Difference]: With dead ends: 11183 [2024-11-13 13:53:13,228 INFO L226 Difference]: Without dead ends: 8882 [2024-11-13 13:53:13,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=1613, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:53:13,233 INFO L432 NwaCegarLoop]: 1494 mSDtfsCounter, 21670 mSDsluCounter, 4810 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21670 SdHoareTripleChecker+Valid, 6304 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:13,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21670 Valid, 6304 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:53:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2024-11-13 13:53:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8841. [2024-11-13 13:53:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8841 states, 8839 states have (on average 1.3651996832220838) internal successors, (12067), 8840 states have internal predecessors, (12067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 12067 transitions. [2024-11-13 13:53:13,580 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 12067 transitions. Word has length 75 [2024-11-13 13:53:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:13,580 INFO L471 AbstractCegarLoop]: Abstraction has 8841 states and 12067 transitions. [2024-11-13 13:53:13,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 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 13:53:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 12067 transitions. [2024-11-13 13:53:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 13:53:13,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:13,582 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:53:13,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:53:13,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 13:53:13,787 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:13,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1240937481, now seen corresponding path program 1 times [2024-11-13 13:53:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244353546] [2024-11-13 13:53:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:14,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244353546] [2024-11-13 13:53:14,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244353546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156498204] [2024-11-13 13:53:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:14,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:14,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:14,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:14,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:53:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:14,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:53:14,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:15,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156498204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:16,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2024-11-13 13:53:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096738011] [2024-11-13 13:53:16,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:16,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:53:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:53:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:53:16,550 INFO L87 Difference]: Start difference. First operand 8841 states and 12067 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:17,602 INFO L93 Difference]: Finished difference Result 20518 states and 27503 transitions. [2024-11-13 13:53:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:53:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 13:53:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:17,633 INFO L225 Difference]: With dead ends: 20518 [2024-11-13 13:53:17,633 INFO L226 Difference]: Without dead ends: 13982 [2024-11-13 13:53:17,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:53:17,641 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 13604 mSDsluCounter, 6507 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13604 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:17,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13604 Valid, 8024 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:53:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13982 states. [2024-11-13 13:53:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13982 to 13340. [2024-11-13 13:53:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13340 states, 13338 states have (on average 1.3376818113660218) internal successors, (17842), 13339 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13340 states to 13340 states and 17842 transitions. [2024-11-13 13:53:18,264 INFO L78 Accepts]: Start accepts. Automaton has 13340 states and 17842 transitions. Word has length 76 [2024-11-13 13:53:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:18,265 INFO L471 AbstractCegarLoop]: Abstraction has 13340 states and 17842 transitions. [2024-11-13 13:53:18,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13340 states and 17842 transitions. [2024-11-13 13:53:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:53:18,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:18,267 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:53:18,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:53:18,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:18,474 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:53:18,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 651834409, now seen corresponding path program 1 times [2024-11-13 13:53:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910102490] [2024-11-13 13:53:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:20,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910102490] [2024-11-13 13:53:20,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910102490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437839240] [2024-11-13 13:53:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:20,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:20,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:20,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:53:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:20,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 13:53:20,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:38,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437839240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:43,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:43,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 23] total 60 [2024-11-13 13:53:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947181361] [2024-11-13 13:53:43,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:43,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 13:53:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 13:53:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 13:53:43,785 INFO L87 Difference]: Start difference. First operand 13340 states and 17842 transitions. Second operand has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 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 13:53:54,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:53:58,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:54:03,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:54:10,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:54:19,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:56:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:40,450 INFO L93 Difference]: Finished difference Result 62198 states and 81365 transitions. [2024-11-13 13:56:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-11-13 13:56:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-13 13:56:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:40,538 INFO L225 Difference]: With dead ends: 62198 [2024-11-13 13:56:40,538 INFO L226 Difference]: Without dead ends: 54990 [2024-11-13 13:56:40,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47192 ImplicationChecksByTransitivity, 146.7s TimeCoverageRelationStatistics Valid=18868, Invalid=95038, Unknown=0, NotChecked=0, Total=113906 [2024-11-13 13:56:40,569 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 31912 mSDsluCounter, 27422 mSDsCounter, 0 mSdLazyCounter, 7293 mSolverCounterSat, 227 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31912 SdHoareTripleChecker+Valid, 28983 SdHoareTripleChecker+Invalid, 7525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 7293 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:40,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31912 Valid, 28983 Invalid, 7525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 7293 Invalid, 5 Unknown, 0 Unchecked, 34.1s Time] [2024-11-13 13:56:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54990 states. [2024-11-13 13:56:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54990 to 22475. [2024-11-13 13:56:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22475 states, 22473 states have (on average 1.324211275753126) internal successors, (29759), 22474 states have internal predecessors, (29759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:56:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22475 states to 22475 states and 29759 transitions. [2024-11-13 13:56:42,141 INFO L78 Accepts]: Start accepts. Automaton has 22475 states and 29759 transitions. Word has length 77 [2024-11-13 13:56:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:42,141 INFO L471 AbstractCegarLoop]: Abstraction has 22475 states and 29759 transitions. [2024-11-13 13:56:42,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 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 13:56:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22475 states and 29759 transitions. [2024-11-13 13:56:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:56:42,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:42,144 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] [2024-11-13 13:56:42,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:56:42,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:42,346 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:42,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1479865559, now seen corresponding path program 1 times [2024-11-13 13:56:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748263290] [2024-11-13 13:56:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:56:44,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748263290] [2024-11-13 13:56:44,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748263290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600159014] [2024-11-13 13:56:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:44,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:44,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:44,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:44,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:56:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:45,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:56:45,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:56:45,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:56:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:56:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600159014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:56:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:56:45,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 4] total 30 [2024-11-13 13:56:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877782785] [2024-11-13 13:56:45,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:56:45,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:56:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:56:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:56:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:56:45,591 INFO L87 Difference]: Start difference. First operand 22475 states and 29759 transitions. Second operand has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:57:19,428 INFO L93 Difference]: Finished difference Result 110539 states and 141580 transitions. [2024-11-13 13:57:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-11-13 13:57:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-13 13:57:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:57:19,551 INFO L225 Difference]: With dead ends: 110539 [2024-11-13 13:57:19,551 INFO L226 Difference]: Without dead ends: 90369 [2024-11-13 13:57:19,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21416 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=8576, Invalid=39604, Unknown=0, NotChecked=0, Total=48180 [2024-11-13 13:57:19,580 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 19226 mSDsluCounter, 19487 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19226 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 3844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:57:19,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19226 Valid, 21064 Invalid, 3844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 13:57:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90369 states. [2024-11-13 13:57:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90369 to 49664. [2024-11-13 13:57:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49664 states, 49662 states have (on average 1.2492448954935362) internal successors, (62040), 49663 states have internal predecessors, (62040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49664 states to 49664 states and 62040 transitions. [2024-11-13 13:57:22,952 INFO L78 Accepts]: Start accepts. Automaton has 49664 states and 62040 transitions. Word has length 78 [2024-11-13 13:57:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:57:22,952 INFO L471 AbstractCegarLoop]: Abstraction has 49664 states and 62040 transitions. [2024-11-13 13:57:22,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49664 states and 62040 transitions. [2024-11-13 13:57:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:57:22,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:57:22,954 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] [2024-11-13 13:57:22,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:57:23,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 13:57:23,154 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:57:23,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -149882013, now seen corresponding path program 1 times [2024-11-13 13:57:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132026956] [2024-11-13 13:57:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132026956] [2024-11-13 13:57:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132026956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711864435] [2024-11-13 13:57:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:26,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:26,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:26,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:57:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:26,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 13:57:26,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:32,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711864435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:43,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 77 [2024-11-13 13:57:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246765458] [2024-11-13 13:57:43,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:43,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 13:57:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 13:57:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=5292, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 13:57:43,789 INFO L87 Difference]: Start difference. First operand 49664 states and 62040 transitions. Second operand has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:59:33,478 INFO L93 Difference]: Finished difference Result 96040 states and 120153 transitions. [2024-11-13 13:59:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-13 13:59:33,478 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-13 13:59:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:59:33,546 INFO L225 Difference]: With dead ends: 96040 [2024-11-13 13:59:33,547 INFO L226 Difference]: Without dead ends: 92483 [2024-11-13 13:59:33,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30386 ImplicationChecksByTransitivity, 101.6s TimeCoverageRelationStatistics Valid=13584, Invalid=69648, Unknown=0, NotChecked=0, Total=83232 [2024-11-13 13:59:33,558 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 38792 mSDsluCounter, 27455 mSDsCounter, 0 mSdLazyCounter, 7329 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38792 SdHoareTripleChecker+Valid, 29071 SdHoareTripleChecker+Invalid, 7717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 7329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:59:33,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38792 Valid, 29071 Invalid, 7717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 7329 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-13 13:59:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92483 states. [2024-11-13 13:59:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92483 to 52733. [2024-11-13 13:59:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52733 states, 52731 states have (on average 1.2483548576738541) internal successors, (65827), 52732 states have internal predecessors, (65827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52733 states to 52733 states and 65827 transitions. [2024-11-13 13:59:37,484 INFO L78 Accepts]: Start accepts. Automaton has 52733 states and 65827 transitions. Word has length 78 [2024-11-13 13:59:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:59:37,484 INFO L471 AbstractCegarLoop]: Abstraction has 52733 states and 65827 transitions. [2024-11-13 13:59:37,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:59:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52733 states and 65827 transitions. [2024-11-13 13:59:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:59:37,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:59:37,486 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:59:37,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:59:37,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 13:59:37,686 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:59:37,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:59:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2033394295, now seen corresponding path program 1 times [2024-11-13 13:59:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:59:37,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239959591] [2024-11-13 13:59:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:59:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:59:38,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:59:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239959591] [2024-11-13 13:59:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239959591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:59:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483223986] [2024-11-13 13:59:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:59:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:59:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:59:38,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:59:38,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:59:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:59:38,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:59:38,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:59:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:59:42,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:59:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:59:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483223986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:59:47,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:59:47,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 19] total 53 [2024-11-13 13:59:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146839785] [2024-11-13 13:59:47,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:59:47,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 13:59:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:59:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 13:59:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 13:59:47,450 INFO L87 Difference]: Start difference. First operand 52733 states and 65827 transitions. Second operand has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:00:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:00:19,799 INFO L93 Difference]: Finished difference Result 102099 states and 127159 transitions. [2024-11-13 14:00:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-13 14:00:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-13 14:00:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:00:19,873 INFO L225 Difference]: With dead ends: 102099 [2024-11-13 14:00:19,874 INFO L226 Difference]: Without dead ends: 75502 [2024-11-13 14:00:19,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5472 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=3736, Invalid=13820, Unknown=0, NotChecked=0, Total=17556 [2024-11-13 14:00:19,891 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 19261 mSDsluCounter, 16110 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19261 SdHoareTripleChecker+Valid, 17642 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:00:19,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19261 Valid, 17642 Invalid, 2774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 14:00:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75502 states. [2024-11-13 14:00:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75502 to 47687. [2024-11-13 14:00:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47687 states, 47685 states have (on average 1.2538114711125092) internal successors, (59788), 47686 states have internal predecessors, (59788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:00:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47687 states to 47687 states and 59788 transitions. [2024-11-13 14:00:24,411 INFO L78 Accepts]: Start accepts. Automaton has 47687 states and 59788 transitions. Word has length 78 [2024-11-13 14:00:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:00:24,411 INFO L471 AbstractCegarLoop]: Abstraction has 47687 states and 59788 transitions. [2024-11-13 14:00:24,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:00:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 47687 states and 59788 transitions. [2024-11-13 14:00:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 14:00:24,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:00:24,412 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] [2024-11-13 14:00:24,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:00:24,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:00:24,612 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:00:24,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:00:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 212204511, now seen corresponding path program 1 times [2024-11-13 14:00:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:00:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707966913] [2024-11-13 14:00:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:00:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:00:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:00:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:00:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:00:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707966913] [2024-11-13 14:00:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707966913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:00:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059318065] [2024-11-13 14:00:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:00:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:00:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:00:25,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:00:25,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc8ee734-2b37-4860-adee-61fdbaa66582/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:00:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:00:25,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 14:00:25,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:00:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:00:29,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:00:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:00:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059318065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:00:36,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:00:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 26] total 58 [2024-11-13 14:00:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820926398] [2024-11-13 14:00:36,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:00:36,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 14:00:36,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:00:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 14:00:36,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=2831, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 14:00:36,993 INFO L87 Difference]: Start difference. First operand 47687 states and 59788 transitions. Second operand has 58 states, 58 states have (on average 3.5) internal successors, (203), 58 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:00:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:00:50,072 INFO L93 Difference]: Finished difference Result 66540 states and 83209 transitions. [2024-11-13 14:00:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 14:00:50,072 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.5) internal successors, (203), 58 states have internal predecessors, (203), 0 states have call successors, (0), 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 79 [2024-11-13 14:00:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:00:50,107 INFO L225 Difference]: With dead ends: 66540 [2024-11-13 14:00:50,107 INFO L226 Difference]: Without dead ends: 46711 [2024-11-13 14:00:50,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2463 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=2418, Invalid=7884, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 14:00:50,118 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 23366 mSDsluCounter, 15747 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23366 SdHoareTripleChecker+Valid, 17272 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:00:50,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23366 Valid, 17272 Invalid, 1811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:00:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46711 states.