./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:40:37,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:40:37,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:40:37,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:40:37,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:40:37,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:40:37,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:40:37,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:40:37,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:40:37,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:40:37,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:40:37,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:40:37,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:40:37,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:40:37,550 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:40:37,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:40:37,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:40:37,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:40:37,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:40:37,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:40:37,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:40:37,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:40:37,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:40:37,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:40:37,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:40:37,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:40:37,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:40:37,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:40:37,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:40:37,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:40:37,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:40:37,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:40:37,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:40:37,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:40:37,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:40:37,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:40:37,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:40:37,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:40:37,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:40:37,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:40:37,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:40:37,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:40:37,563 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 [2024-10-12 21:40:37,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:40:37,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:40:37,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:40:37,839 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:40:37,839 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:40:37,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-12 21:40:39,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:40:39,405 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:40:39,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-12 21:40:39,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522c25712/68eeadd27779430eaa3beb084847177e/FLAG239ddfe60 [2024-10-12 21:40:39,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522c25712/68eeadd27779430eaa3beb084847177e [2024-10-12 21:40:39,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:40:39,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:40:39,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:40:39,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:40:39,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:40:39,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:40:39" (1/1) ... [2024-10-12 21:40:39,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753b5d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:39, skipping insertion in model container [2024-10-12 21:40:39,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:40:39" (1/1) ... [2024-10-12 21:40:39,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:40:40,031 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2024-10-12 21:40:40,074 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2024-10-12 21:40:40,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:40:40,118 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:40:40,132 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2024-10-12 21:40:40,154 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2024-10-12 21:40:40,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:40:40,202 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:40:40,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40 WrapperNode [2024-10-12 21:40:40,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:40:40,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:40:40,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:40:40,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:40:40,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,252 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 483 [2024-10-12 21:40:40,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:40:40,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:40:40,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:40:40,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:40:40,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,285 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]. [2024-10-12 21:40:40,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:40:40,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:40:40,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:40:40,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:40:40,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (1/1) ... [2024-10-12 21:40:40,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:40:40,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:40,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:40:40,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:40:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:40:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:40:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:40:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-12 21:40:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-12 21:40:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:40:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:40:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:40:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:40:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:40:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:40:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:40:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:40:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:40:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:40:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:40:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:40:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:40:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:40:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:40:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:40:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:40:40,473 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:40:40,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:40:40,941 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-10-12 21:40:40,942 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:40:41,000 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:40:41,001 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-12 21:40:41,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:40:41 BoogieIcfgContainer [2024-10-12 21:40:41,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:40:41,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:40:41,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:40:41,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:40:41,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:40:39" (1/3) ... [2024-10-12 21:40:41,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781dfcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:40:41, skipping insertion in model container [2024-10-12 21:40:41,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:40:40" (2/3) ... [2024-10-12 21:40:41,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781dfcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:40:41, skipping insertion in model container [2024-10-12 21:40:41,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:40:41" (3/3) ... [2024-10-12 21:40:41,011 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-12 21:40:41,029 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:40:41,030 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:40:41,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:40:41,100 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;@17266f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:40:41,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:40:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 147 states have (on average 1.653061224489796) internal successors, (243), 152 states have internal predecessors, (243), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-12 21:40:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 21:40:41,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:41,120 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] [2024-10-12 21:40:41,121 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:41,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -641686583, now seen corresponding path program 1 times [2024-10-12 21:40:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402118926] [2024-10-12 21:40:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:41,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:41,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402118926] [2024-10-12 21:40:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402118926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:41,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962325017] [2024-10-12 21:40:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:41,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:41,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:41,502 INFO L87 Difference]: Start difference. First operand has 181 states, 147 states have (on average 1.653061224489796) internal successors, (243), 152 states have internal predecessors, (243), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:41,935 INFO L93 Difference]: Finished difference Result 413 states and 658 transitions. [2024-10-12 21:40:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:41,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-10-12 21:40:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:41,949 INFO L225 Difference]: With dead ends: 413 [2024-10-12 21:40:41,950 INFO L226 Difference]: Without dead ends: 239 [2024-10-12 21:40:41,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:41,957 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 316 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:41,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 368 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:40:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-12 21:40:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2024-10-12 21:40:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 194 states have (on average 1.4845360824742269) internal successors, (288), 198 states have internal predecessors, (288), 26 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2024-10-12 21:40:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 344 transitions. [2024-10-12 21:40:42,022 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 344 transitions. Word has length 37 [2024-10-12 21:40:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:42,023 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 344 transitions. [2024-10-12 21:40:42,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 344 transitions. [2024-10-12 21:40:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 21:40:42,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:42,027 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] [2024-10-12 21:40:42,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:40:42,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:42,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1102259478, now seen corresponding path program 1 times [2024-10-12 21:40:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112688633] [2024-10-12 21:40:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 21:40:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:42,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112688633] [2024-10-12 21:40:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112688633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763163387] [2024-10-12 21:40:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:42,139 INFO L87 Difference]: Start difference. First operand 233 states and 344 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:42,436 INFO L93 Difference]: Finished difference Result 467 states and 688 transitions. [2024-10-12 21:40:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-10-12 21:40:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:42,441 INFO L225 Difference]: With dead ends: 467 [2024-10-12 21:40:42,441 INFO L226 Difference]: Without dead ends: 356 [2024-10-12 21:40:42,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:42,446 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 329 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:42,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 357 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:40:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-10-12 21:40:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 333. [2024-10-12 21:40:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 281 states have (on average 1.4448398576512456) internal successors, (406), 286 states have internal predecessors, (406), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2024-10-12 21:40:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 484 transitions. [2024-10-12 21:40:42,492 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 484 transitions. Word has length 38 [2024-10-12 21:40:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:42,492 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 484 transitions. [2024-10-12 21:40:42,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 484 transitions. [2024-10-12 21:40:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 21:40:42,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:42,495 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] [2024-10-12 21:40:42,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:40:42,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:42,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -45404508, now seen corresponding path program 1 times [2024-10-12 21:40:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840128962] [2024-10-12 21:40:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:42,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 21:40:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:42,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840128962] [2024-10-12 21:40:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840128962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:42,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:42,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724789906] [2024-10-12 21:40:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:42,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:42,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:42,631 INFO L87 Difference]: Start difference. First operand 333 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:42,939 INFO L93 Difference]: Finished difference Result 753 states and 1065 transitions. [2024-10-12 21:40:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-12 21:40:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:42,944 INFO L225 Difference]: With dead ends: 753 [2024-10-12 21:40:42,945 INFO L226 Difference]: Without dead ends: 542 [2024-10-12 21:40:42,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:42,947 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 156 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:42,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 477 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:40:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-10-12 21:40:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 438. [2024-10-12 21:40:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 374 states have (on average 1.4304812834224598) internal successors, (535), 381 states have internal predecessors, (535), 40 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (50), 36 states have call predecessors, (50), 38 states have call successors, (50) [2024-10-12 21:40:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 625 transitions. [2024-10-12 21:40:42,982 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 625 transitions. Word has length 39 [2024-10-12 21:40:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:42,982 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 625 transitions. [2024-10-12 21:40:42,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 21:40:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 625 transitions. [2024-10-12 21:40:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 21:40:42,984 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:42,985 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] [2024-10-12 21:40:42,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:40:42,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:42,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1197660736, now seen corresponding path program 1 times [2024-10-12 21:40:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74406796] [2024-10-12 21:40:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 21:40:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:40:43,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:43,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74406796] [2024-10-12 21:40:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74406796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:43,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567966118] [2024-10-12 21:40:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:43,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:43,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:43,116 INFO L87 Difference]: Start difference. First operand 438 states and 625 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 21:40:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:43,401 INFO L93 Difference]: Finished difference Result 954 states and 1342 transitions. [2024-10-12 21:40:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-10-12 21:40:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:43,407 INFO L225 Difference]: With dead ends: 954 [2024-10-12 21:40:43,407 INFO L226 Difference]: Without dead ends: 638 [2024-10-12 21:40:43,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:43,409 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 141 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:43,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 521 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:40:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-10-12 21:40:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 604. [2024-10-12 21:40:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 516 states have (on average 1.377906976744186) internal successors, (711), 525 states have internal predecessors, (711), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (74), 50 states have call predecessors, (74), 52 states have call successors, (74) [2024-10-12 21:40:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 839 transitions. [2024-10-12 21:40:43,462 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 839 transitions. Word has length 54 [2024-10-12 21:40:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:43,464 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 839 transitions. [2024-10-12 21:40:43,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 21:40:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 839 transitions. [2024-10-12 21:40:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:40:43,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:43,468 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] [2024-10-12 21:40:43,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:40:43,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:43,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 119218933, now seen corresponding path program 1 times [2024-10-12 21:40:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:43,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011130356] [2024-10-12 21:40:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:40:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 21:40:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011130356] [2024-10-12 21:40:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011130356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:43,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527018732] [2024-10-12 21:40:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:43,551 INFO L87 Difference]: Start difference. First operand 604 states and 839 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:43,823 INFO L93 Difference]: Finished difference Result 1183 states and 1618 transitions. [2024-10-12 21:40:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:43,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-10-12 21:40:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:43,828 INFO L225 Difference]: With dead ends: 1183 [2024-10-12 21:40:43,829 INFO L226 Difference]: Without dead ends: 781 [2024-10-12 21:40:43,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:43,831 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:43,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 369 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:40:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-10-12 21:40:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 732. [2024-10-12 21:40:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 628 states have (on average 1.3471337579617835) internal successors, (846), 639 states have internal predecessors, (846), 62 states have call successors, (62), 35 states have call predecessors, (62), 40 states have return successors, (88), 58 states have call predecessors, (88), 60 states have call successors, (88) [2024-10-12 21:40:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 996 transitions. [2024-10-12 21:40:43,876 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 996 transitions. Word has length 59 [2024-10-12 21:40:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:43,877 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 996 transitions. [2024-10-12 21:40:43,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 996 transitions. [2024-10-12 21:40:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:40:43,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:43,880 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] [2024-10-12 21:40:43,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:40:43,880 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:43,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 157658772, now seen corresponding path program 1 times [2024-10-12 21:40:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584720352] [2024-10-12 21:40:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:40:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:40:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:43,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584720352] [2024-10-12 21:40:43,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584720352] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:43,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642515267] [2024-10-12 21:40:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:43,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:43,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:43,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:43,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:40:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:40:44,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 21:40:44,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:40:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642515267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:40:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-12 21:40:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901570070] [2024-10-12 21:40:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:44,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:44,098 INFO L87 Difference]: Start difference. First operand 732 states and 996 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:44,182 INFO L93 Difference]: Finished difference Result 1220 states and 1670 transitions. [2024-10-12 21:40:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:40:44,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-12 21:40:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:44,187 INFO L225 Difference]: With dead ends: 1220 [2024-10-12 21:40:44,187 INFO L226 Difference]: Without dead ends: 737 [2024-10-12 21:40:44,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:44,190 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:44,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:40:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-10-12 21:40:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-10-12 21:40:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 633 states have (on average 1.3317535545023698) internal successors, (843), 644 states have internal predecessors, (843), 62 states have call successors, (62), 35 states have call predecessors, (62), 40 states have return successors, (88), 58 states have call predecessors, (88), 60 states have call successors, (88) [2024-10-12 21:40:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 993 transitions. [2024-10-12 21:40:44,247 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 993 transitions. Word has length 60 [2024-10-12 21:40:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:44,248 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 993 transitions. [2024-10-12 21:40:44,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:44,248 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 993 transitions. [2024-10-12 21:40:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:40:44,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:44,251 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] [2024-10-12 21:40:44,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:40:44,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 21:40:44,455 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:44,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash -686346730, now seen corresponding path program 1 times [2024-10-12 21:40:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115976587] [2024-10-12 21:40:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:40:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 21:40:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115976587] [2024-10-12 21:40:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115976587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313125752] [2024-10-12 21:40:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:44,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:44,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:44,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:44,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:40:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:44,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:40:44,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:40:44,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:40:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313125752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:44,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:40:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-12 21:40:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801929684] [2024-10-12 21:40:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:44,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:44,644 INFO L87 Difference]: Start difference. First operand 737 states and 993 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:44,733 INFO L93 Difference]: Finished difference Result 1163 states and 1572 transitions. [2024-10-12 21:40:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:40:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-12 21:40:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:44,737 INFO L225 Difference]: With dead ends: 1163 [2024-10-12 21:40:44,737 INFO L226 Difference]: Without dead ends: 634 [2024-10-12 21:40:44,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:44,740 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:44,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:40:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-10-12 21:40:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 627. [2024-10-12 21:40:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 541 states have (on average 1.3308687615526802) internal successors, (720), 550 states have internal predecessors, (720), 52 states have call successors, (52), 29 states have call predecessors, (52), 32 states have return successors, (69), 48 states have call predecessors, (69), 50 states have call successors, (69) [2024-10-12 21:40:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 841 transitions. [2024-10-12 21:40:44,776 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 841 transitions. Word has length 60 [2024-10-12 21:40:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:44,778 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 841 transitions. [2024-10-12 21:40:44,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 21:40:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 841 transitions. [2024-10-12 21:40:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:40:44,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:44,779 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] [2024-10-12 21:40:44,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 21:40:44,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-12 21:40:44,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:44,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1111292886, now seen corresponding path program 1 times [2024-10-12 21:40:44,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579773655] [2024-10-12 21:40:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:40:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:40:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579773655] [2024-10-12 21:40:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579773655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:40:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842652600] [2024-10-12 21:40:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:45,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:40:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:40:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:45,083 INFO L87 Difference]: Start difference. First operand 627 states and 841 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 21:40:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:45,386 INFO L93 Difference]: Finished difference Result 712 states and 944 transitions. [2024-10-12 21:40:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:40:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-10-12 21:40:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:45,391 INFO L225 Difference]: With dead ends: 712 [2024-10-12 21:40:45,391 INFO L226 Difference]: Without dead ends: 709 [2024-10-12 21:40:45,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:40:45,394 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 551 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:45,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 366 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:40:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-12 21:40:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 626. [2024-10-12 21:40:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 541 states have (on average 1.3271719038817005) internal successors, (718), 549 states have internal predecessors, (718), 51 states have call successors, (51), 29 states have call predecessors, (51), 32 states have return successors, (69), 48 states have call predecessors, (69), 50 states have call successors, (69) [2024-10-12 21:40:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 838 transitions. [2024-10-12 21:40:45,443 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 838 transitions. Word has length 60 [2024-10-12 21:40:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:45,444 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 838 transitions. [2024-10-12 21:40:45,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 21:40:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 838 transitions. [2024-10-12 21:40:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:45,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:45,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:45,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:40:45,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:45,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1127040550, now seen corresponding path program 1 times [2024-10-12 21:40:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924641014] [2024-10-12 21:40:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:45,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924641014] [2024-10-12 21:40:45,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924641014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:45,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:40:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673265873] [2024-10-12 21:40:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:45,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:40:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:40:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:40:45,558 INFO L87 Difference]: Start difference. First operand 626 states and 838 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:46,326 INFO L93 Difference]: Finished difference Result 901 states and 1264 transitions. [2024-10-12 21:40:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:40:46,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:46,331 INFO L225 Difference]: With dead ends: 901 [2024-10-12 21:40:46,331 INFO L226 Difference]: Without dead ends: 793 [2024-10-12 21:40:46,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:40:46,333 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 518 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:46,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 531 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:40:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-10-12 21:40:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 734. [2024-10-12 21:40:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 640 states have internal predecessors, (856), 62 states have call successors, (62), 35 states have call predecessors, (62), 39 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-10-12 21:40:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1001 transitions. [2024-10-12 21:40:46,381 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1001 transitions. Word has length 61 [2024-10-12 21:40:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:46,381 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1001 transitions. [2024-10-12 21:40:46,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1001 transitions. [2024-10-12 21:40:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:46,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:46,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:46,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:40:46,384 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:46,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1159478042, now seen corresponding path program 1 times [2024-10-12 21:40:46,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:46,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515531592] [2024-10-12 21:40:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515531592] [2024-10-12 21:40:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515531592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:40:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285859838] [2024-10-12 21:40:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:40:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:40:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:46,539 INFO L87 Difference]: Start difference. First operand 734 states and 1001 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:47,601 INFO L93 Difference]: Finished difference Result 1146 states and 1630 transitions. [2024-10-12 21:40:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:40:47,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:47,607 INFO L225 Difference]: With dead ends: 1146 [2024-10-12 21:40:47,607 INFO L226 Difference]: Without dead ends: 930 [2024-10-12 21:40:47,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:40:47,609 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 523 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:47,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 870 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:40:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-10-12 21:40:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 835. [2024-10-12 21:40:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 714 states have (on average 1.3725490196078431) internal successors, (980), 724 states have internal predecessors, (980), 73 states have call successors, (73), 41 states have call predecessors, (73), 46 states have return successors, (96), 71 states have call predecessors, (96), 72 states have call successors, (96) [2024-10-12 21:40:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1149 transitions. [2024-10-12 21:40:47,666 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1149 transitions. Word has length 61 [2024-10-12 21:40:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:47,667 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1149 transitions. [2024-10-12 21:40:47,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1149 transitions. [2024-10-12 21:40:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:47,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:47,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:47,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:40:47,669 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:47,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1174996760, now seen corresponding path program 1 times [2024-10-12 21:40:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:47,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174008159] [2024-10-12 21:40:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174008159] [2024-10-12 21:40:47,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174008159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:47,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:47,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:40:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695647816] [2024-10-12 21:40:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:47,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:40:47,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:40:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:47,806 INFO L87 Difference]: Start difference. First operand 835 states and 1149 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:48,962 INFO L93 Difference]: Finished difference Result 1567 states and 2262 transitions. [2024-10-12 21:40:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:40:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:48,969 INFO L225 Difference]: With dead ends: 1567 [2024-10-12 21:40:48,969 INFO L226 Difference]: Without dead ends: 1250 [2024-10-12 21:40:48,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:40:48,971 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 537 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:48,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 861 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:40:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-10-12 21:40:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1037. [2024-10-12 21:40:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 882 states have (on average 1.3979591836734695) internal successors, (1233), 894 states have internal predecessors, (1233), 93 states have call successors, (93), 53 states have call predecessors, (93), 60 states have return successors, (124), 93 states have call predecessors, (124), 92 states have call successors, (124) [2024-10-12 21:40:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1450 transitions. [2024-10-12 21:40:49,045 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1450 transitions. Word has length 61 [2024-10-12 21:40:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:49,045 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1450 transitions. [2024-10-12 21:40:49,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1450 transitions. [2024-10-12 21:40:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:49,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:49,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:49,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:40:49,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:49,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1528085142, now seen corresponding path program 1 times [2024-10-12 21:40:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449176643] [2024-10-12 21:40:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:49,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:49,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449176643] [2024-10-12 21:40:49,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449176643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:49,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:49,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:40:49,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656806373] [2024-10-12 21:40:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:49,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:40:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:40:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:49,162 INFO L87 Difference]: Start difference. First operand 1037 states and 1450 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:50,287 INFO L93 Difference]: Finished difference Result 2271 states and 3313 transitions. [2024-10-12 21:40:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:40:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:50,296 INFO L225 Difference]: With dead ends: 2271 [2024-10-12 21:40:50,297 INFO L226 Difference]: Without dead ends: 1752 [2024-10-12 21:40:50,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:40:50,300 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 564 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:50,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 857 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:40:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2024-10-12 21:40:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1418. [2024-10-12 21:40:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1197 states have (on average 1.4243943191311612) internal successors, (1705), 1213 states have internal predecessors, (1705), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-12 21:40:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2020 transitions. [2024-10-12 21:40:50,420 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2020 transitions. Word has length 61 [2024-10-12 21:40:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:50,421 INFO L471 AbstractCegarLoop]: Abstraction has 1418 states and 2020 transitions. [2024-10-12 21:40:50,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2020 transitions. [2024-10-12 21:40:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:50,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:50,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:50,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:40:50,424 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:50,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 400187560, now seen corresponding path program 1 times [2024-10-12 21:40:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875021912] [2024-10-12 21:40:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:50,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875021912] [2024-10-12 21:40:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875021912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:40:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351442256] [2024-10-12 21:40:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:50,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:40:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:40:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:50,522 INFO L87 Difference]: Start difference. First operand 1418 states and 2020 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:51,135 INFO L93 Difference]: Finished difference Result 2531 states and 3718 transitions. [2024-10-12 21:40:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:40:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:51,143 INFO L225 Difference]: With dead ends: 2531 [2024-10-12 21:40:51,144 INFO L226 Difference]: Without dead ends: 1631 [2024-10-12 21:40:51,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:40:51,146 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 429 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:51,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 541 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:40:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-10-12 21:40:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1418. [2024-10-12 21:40:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1197 states have (on average 1.41687552213868) internal successors, (1696), 1213 states have internal predecessors, (1696), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-12 21:40:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2011 transitions. [2024-10-12 21:40:51,267 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2011 transitions. Word has length 61 [2024-10-12 21:40:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:51,267 INFO L471 AbstractCegarLoop]: Abstraction has 1418 states and 2011 transitions. [2024-10-12 21:40:51,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2011 transitions. [2024-10-12 21:40:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:51,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:51,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:51,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:40:51,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:51,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1293673898, now seen corresponding path program 1 times [2024-10-12 21:40:51,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:51,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124852582] [2024-10-12 21:40:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124852582] [2024-10-12 21:40:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124852582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:40:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366301588] [2024-10-12 21:40:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:51,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:40:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:40:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:40:51,350 INFO L87 Difference]: Start difference. First operand 1418 states and 2011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:51,998 INFO L93 Difference]: Finished difference Result 2528 states and 3697 transitions. [2024-10-12 21:40:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:40:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:52,007 INFO L225 Difference]: With dead ends: 2528 [2024-10-12 21:40:52,007 INFO L226 Difference]: Without dead ends: 1629 [2024-10-12 21:40:52,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:40:52,011 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 187 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:52,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 616 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:40:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-10-12 21:40:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1436. [2024-10-12 21:40:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1215 states have (on average 1.4106995884773663) internal successors, (1714), 1231 states have internal predecessors, (1714), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-12 21:40:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2029 transitions. [2024-10-12 21:40:52,131 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2029 transitions. Word has length 61 [2024-10-12 21:40:52,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:52,132 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2029 transitions. [2024-10-12 21:40:52,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2029 transitions. [2024-10-12 21:40:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:52,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:52,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:52,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:40:52,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:52,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1953205420, now seen corresponding path program 1 times [2024-10-12 21:40:52,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:52,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709662534] [2024-10-12 21:40:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:52,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:52,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709662534] [2024-10-12 21:40:52,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709662534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:52,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:40:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935664029] [2024-10-12 21:40:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:52,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:40:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:40:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:52,269 INFO L87 Difference]: Start difference. First operand 1436 states and 2029 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:53,724 INFO L93 Difference]: Finished difference Result 4641 states and 6943 transitions. [2024-10-12 21:40:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 21:40:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-12 21:40:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:53,745 INFO L225 Difference]: With dead ends: 4641 [2024-10-12 21:40:53,745 INFO L226 Difference]: Without dead ends: 3724 [2024-10-12 21:40:53,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:40:53,750 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1204 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:53,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 710 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:40:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2024-10-12 21:40:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3202. [2024-10-12 21:40:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 2669 states have (on average 1.433870363431997) internal successors, (3827), 2716 states have internal predecessors, (3827), 315 states have call successors, (315), 189 states have call predecessors, (315), 216 states have return successors, (483), 304 states have call predecessors, (483), 314 states have call successors, (483) [2024-10-12 21:40:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4625 transitions. [2024-10-12 21:40:54,092 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4625 transitions. Word has length 61 [2024-10-12 21:40:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:54,092 INFO L471 AbstractCegarLoop]: Abstraction has 3202 states and 4625 transitions. [2024-10-12 21:40:54,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:40:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4625 transitions. [2024-10-12 21:40:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 21:40:54,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:54,095 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] [2024-10-12 21:40:54,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:40:54,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:54,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash 89678806, now seen corresponding path program 1 times [2024-10-12 21:40:54,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:54,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81335372] [2024-10-12 21:40:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:54,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:54,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:54,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:54,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 21:40:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:40:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81335372] [2024-10-12 21:40:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81335372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774539358] [2024-10-12 21:40:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:54,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:54,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:54,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:40:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:54,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:40:54,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:40:54,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:40:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 21:40:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774539358] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:40:54,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:40:54,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-12 21:40:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016811657] [2024-10-12 21:40:54,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:40:54,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:40:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:40:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:40:54,606 INFO L87 Difference]: Start difference. First operand 3202 states and 4625 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-12 21:40:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:55,280 INFO L93 Difference]: Finished difference Result 4005 states and 5660 transitions. [2024-10-12 21:40:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:40:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-12 21:40:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:55,303 INFO L225 Difference]: With dead ends: 4005 [2024-10-12 21:40:55,303 INFO L226 Difference]: Without dead ends: 4002 [2024-10-12 21:40:55,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-12 21:40:55,306 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 509 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:55,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 986 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:40:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2024-10-12 21:40:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3505. [2024-10-12 21:40:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2936 states have (on average 1.4213215258855585) internal successors, (4173), 2989 states have internal predecessors, (4173), 334 states have call successors, (334), 202 states have call predecessors, (334), 233 states have return successors, (513), 321 states have call predecessors, (513), 333 states have call successors, (513) [2024-10-12 21:40:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5020 transitions. [2024-10-12 21:40:55,629 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5020 transitions. Word has length 61 [2024-10-12 21:40:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:55,630 INFO L471 AbstractCegarLoop]: Abstraction has 3505 states and 5020 transitions. [2024-10-12 21:40:55,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-12 21:40:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5020 transitions. [2024-10-12 21:40:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 21:40:55,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:55,635 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 21:40:55,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 21:40:55,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:55,840 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:55,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1275804189, now seen corresponding path program 2 times [2024-10-12 21:40:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211085516] [2024-10-12 21:40:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:55,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:55,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:55,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:55,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-12 21:40:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 21:40:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211085516] [2024-10-12 21:40:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211085516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:55,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:40:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:40:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992670675] [2024-10-12 21:40:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:55,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:40:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:40:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:40:55,894 INFO L87 Difference]: Start difference. First operand 3505 states and 5020 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 21:40:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:56,438 INFO L93 Difference]: Finished difference Result 4133 states and 5837 transitions. [2024-10-12 21:40:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:40:56,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2024-10-12 21:40:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:56,457 INFO L225 Difference]: With dead ends: 4133 [2024-10-12 21:40:56,457 INFO L226 Difference]: Without dead ends: 3474 [2024-10-12 21:40:56,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:40:56,461 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 326 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:56,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:40:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2024-10-12 21:40:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3397. [2024-10-12 21:40:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 2841 states have (on average 1.4237944385779655) internal successors, (4045), 2894 states have internal predecessors, (4045), 327 states have call successors, (327), 197 states have call predecessors, (327), 227 states have return successors, (502), 313 states have call predecessors, (502), 326 states have call successors, (502) [2024-10-12 21:40:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4874 transitions. [2024-10-12 21:40:56,880 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4874 transitions. Word has length 78 [2024-10-12 21:40:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:56,880 INFO L471 AbstractCegarLoop]: Abstraction has 3397 states and 4874 transitions. [2024-10-12 21:40:56,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 21:40:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4874 transitions. [2024-10-12 21:40:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:40:56,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:56,887 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:56,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:40:56,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:56,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1576457092, now seen corresponding path program 1 times [2024-10-12 21:40:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:56,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942751927] [2024-10-12 21:40:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 21:40:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 21:40:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-12 21:40:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 21:40:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-12 21:40:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 21:40:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942751927] [2024-10-12 21:40:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942751927] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103416180] [2024-10-12 21:40:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:56,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:56,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:56,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:56,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:40:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:40:57,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 21:40:57,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:40:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103416180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:40:57,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 21:40:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015019632] [2024-10-12 21:40:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:57,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:40:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:40:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:40:57,100 INFO L87 Difference]: Start difference. First operand 3397 states and 4874 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 21:40:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:57,345 INFO L93 Difference]: Finished difference Result 3680 states and 5230 transitions. [2024-10-12 21:40:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:40:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2024-10-12 21:40:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:57,360 INFO L225 Difference]: With dead ends: 3680 [2024-10-12 21:40:57,360 INFO L226 Difference]: Without dead ends: 2693 [2024-10-12 21:40:57,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:40:57,365 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 55 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:57,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 486 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:40:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2024-10-12 21:40:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2693. [2024-10-12 21:40:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2222 states have (on average 1.4635463546354635) internal successors, (3252), 2262 states have internal predecessors, (3252), 280 states have call successors, (280), 166 states have call predecessors, (280), 190 states have return successors, (430), 272 states have call predecessors, (430), 280 states have call successors, (430) [2024-10-12 21:40:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3962 transitions. [2024-10-12 21:40:57,654 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3962 transitions. Word has length 92 [2024-10-12 21:40:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:57,657 INFO L471 AbstractCegarLoop]: Abstraction has 2693 states and 3962 transitions. [2024-10-12 21:40:57,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-12 21:40:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3962 transitions. [2024-10-12 21:40:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-12 21:40:57,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:57,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:57,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:40:57,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 21:40:57,864 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:57,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash -880498830, now seen corresponding path program 1 times [2024-10-12 21:40:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:57,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502141058] [2024-10-12 21:40:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:57,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:40:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:40:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-12 21:40:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:40:57,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502141058] [2024-10-12 21:40:57,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502141058] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150080698] [2024-10-12 21:40:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:57,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:57,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:57,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:57,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:40:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:58,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:40:58,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 21:40:58,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:40:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150080698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:58,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:40:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:40:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7458574] [2024-10-12 21:40:58,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:58,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:40:58,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:40:58,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:58,105 INFO L87 Difference]: Start difference. First operand 2693 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:40:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:40:58,515 INFO L93 Difference]: Finished difference Result 7964 states and 11847 transitions. [2024-10-12 21:40:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:40:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2024-10-12 21:40:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:40:58,544 INFO L225 Difference]: With dead ends: 7964 [2024-10-12 21:40:58,544 INFO L226 Difference]: Without dead ends: 5281 [2024-10-12 21:40:58,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:58,555 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 134 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:40:58,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 295 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:40:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2024-10-12 21:40:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5251. [2024-10-12 21:40:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 4334 states have (on average 1.45523765574527) internal successors, (6307), 4413 states have internal predecessors, (6307), 538 states have call successors, (538), 330 states have call predecessors, (538), 378 states have return successors, (822), 515 states have call predecessors, (822), 538 states have call successors, (822) [2024-10-12 21:40:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 7667 transitions. [2024-10-12 21:40:59,194 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 7667 transitions. Word has length 99 [2024-10-12 21:40:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:40:59,194 INFO L471 AbstractCegarLoop]: Abstraction has 5251 states and 7667 transitions. [2024-10-12 21:40:59,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:40:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 7667 transitions. [2024-10-12 21:40:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-12 21:40:59,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:40:59,202 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:40:59,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 21:40:59,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:59,407 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:40:59,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:40:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -715203438, now seen corresponding path program 1 times [2024-10-12 21:40:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:40:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749677445] [2024-10-12 21:40:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:40:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:40:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:40:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:40:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:40:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:40:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:40:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:40:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-12 21:40:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:40:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:40:59,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749677445] [2024-10-12 21:40:59,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749677445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:40:59,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085280200] [2024-10-12 21:40:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:40:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:40:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:40:59,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:40:59,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:40:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:40:59,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:40:59,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:40:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 21:40:59,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:40:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085280200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:40:59,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:40:59,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:40:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351297268] [2024-10-12 21:40:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:40:59,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:40:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:40:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:40:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:40:59,621 INFO L87 Difference]: Start difference. First operand 5251 states and 7667 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:00,336 INFO L93 Difference]: Finished difference Result 15415 states and 22651 transitions. [2024-10-12 21:41:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:00,337 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-10-12 21:41:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:00,361 INFO L225 Difference]: With dead ends: 15415 [2024-10-12 21:41:00,361 INFO L226 Difference]: Without dead ends: 6202 [2024-10-12 21:41:00,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:00,384 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 144 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:00,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 449 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6202 states. [2024-10-12 21:41:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6202 to 6202. [2024-10-12 21:41:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 5122 states have (on average 1.4527528309254198) internal successors, (7441), 5209 states have internal predecessors, (7441), 633 states have call successors, (633), 390 states have call predecessors, (633), 446 states have return successors, (972), 610 states have call predecessors, (972), 633 states have call successors, (972) [2024-10-12 21:41:00,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 9046 transitions. [2024-10-12 21:41:00,967 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 9046 transitions. Word has length 99 [2024-10-12 21:41:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:00,967 INFO L471 AbstractCegarLoop]: Abstraction has 6202 states and 9046 transitions. [2024-10-12 21:41:00,967 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 9046 transitions. [2024-10-12 21:41:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-12 21:41:00,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:00,982 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:01,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 21:41:01,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:01,187 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:01,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:01,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2103426874, now seen corresponding path program 1 times [2024-10-12 21:41:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:01,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732892172] [2024-10-12 21:41:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:01,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:41:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-12 21:41:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-12 21:41:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 21:41:01,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:01,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732892172] [2024-10-12 21:41:01,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732892172] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:01,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241332167] [2024-10-12 21:41:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:01,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:01,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:01,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:01,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:41:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:01,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:01,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 21:41:01,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241332167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:41:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624526509] [2024-10-12 21:41:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:01,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:01,510 INFO L87 Difference]: Start difference. First operand 6202 states and 9046 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 21:41:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:02,355 INFO L93 Difference]: Finished difference Result 12890 states and 19000 transitions. [2024-10-12 21:41:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:02,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2024-10-12 21:41:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:02,397 INFO L225 Difference]: With dead ends: 12890 [2024-10-12 21:41:02,397 INFO L226 Difference]: Without dead ends: 9024 [2024-10-12 21:41:02,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:02,418 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 94 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:02,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 299 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2024-10-12 21:41:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 8964. [2024-10-12 21:41:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 7419 states have (on average 1.4515433346812239) internal successors, (10769), 7540 states have internal predecessors, (10769), 901 states have call successors, (901), 563 states have call predecessors, (901), 643 states have return successors, (1353), 868 states have call predecessors, (1353), 901 states have call successors, (1353) [2024-10-12 21:41:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 13023 transitions. [2024-10-12 21:41:03,227 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 13023 transitions. Word has length 127 [2024-10-12 21:41:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:03,227 INFO L471 AbstractCegarLoop]: Abstraction has 8964 states and 13023 transitions. [2024-10-12 21:41:03,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 21:41:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 13023 transitions. [2024-10-12 21:41:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-12 21:41:03,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:03,243 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:03,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 21:41:03,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:03,444 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:03,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash -519454805, now seen corresponding path program 1 times [2024-10-12 21:41:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201020431] [2024-10-12 21:41:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:03,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 21:41:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 21:41:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-12 21:41:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-12 21:41:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 21:41:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201020431] [2024-10-12 21:41:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201020431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267620575] [2024-10-12 21:41:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:03,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:03,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 21:41:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:03,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:03,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 21:41:03,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267620575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:03,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575436191] [2024-10-12 21:41:03,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:03,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:03,724 INFO L87 Difference]: Start difference. First operand 8964 states and 13023 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 21:41:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:04,506 INFO L93 Difference]: Finished difference Result 18930 states and 27806 transitions. [2024-10-12 21:41:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 143 [2024-10-12 21:41:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:04,550 INFO L225 Difference]: With dead ends: 18930 [2024-10-12 21:41:04,550 INFO L226 Difference]: Without dead ends: 9977 [2024-10-12 21:41:04,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:04,578 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 128 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:04,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 185 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states. [2024-10-12 21:41:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 9977. [2024-10-12 21:41:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9977 states, 8324 states have (on average 1.405333974050937) internal successors, (11698), 8455 states have internal predecessors, (11698), 926 states have call successors, (926), 626 states have call predecessors, (926), 726 states have return successors, (1401), 903 states have call predecessors, (1401), 926 states have call successors, (1401) [2024-10-12 21:41:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9977 states to 9977 states and 14025 transitions. [2024-10-12 21:41:05,574 INFO L78 Accepts]: Start accepts. Automaton has 9977 states and 14025 transitions. Word has length 143 [2024-10-12 21:41:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:05,574 INFO L471 AbstractCegarLoop]: Abstraction has 9977 states and 14025 transitions. [2024-10-12 21:41:05,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 21:41:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 9977 states and 14025 transitions. [2024-10-12 21:41:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-12 21:41:05,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:05,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:05,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 21:41:05,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 21:41:05,790 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:05,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 908697801, now seen corresponding path program 1 times [2024-10-12 21:41:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540823986] [2024-10-12 21:41:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 21:41:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 21:41:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-12 21:41:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-12 21:41:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 21:41:05,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540823986] [2024-10-12 21:41:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540823986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23356034] [2024-10-12 21:41:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:05,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:05,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:05,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 21:41:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:06,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:06,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-12 21:41:06,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23356034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924860467] [2024-10-12 21:41:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:06,036 INFO L87 Difference]: Start difference. First operand 9977 states and 14025 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 21:41:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:07,015 INFO L93 Difference]: Finished difference Result 21023 states and 29420 transitions. [2024-10-12 21:41:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 143 [2024-10-12 21:41:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:07,067 INFO L225 Difference]: With dead ends: 21023 [2024-10-12 21:41:07,067 INFO L226 Difference]: Without dead ends: 11057 [2024-10-12 21:41:07,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:07,096 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 150 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:07,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 304 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11057 states. [2024-10-12 21:41:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11057 to 10764. [2024-10-12 21:41:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10764 states, 9055 states have (on average 1.3627829928216455) internal successors, (12340), 9176 states have internal predecessors, (12340), 924 states have call successors, (924), 684 states have call predecessors, (924), 784 states have return successors, (1397), 911 states have call predecessors, (1397), 924 states have call successors, (1397) [2024-10-12 21:41:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 14661 transitions. [2024-10-12 21:41:08,407 INFO L78 Accepts]: Start accepts. Automaton has 10764 states and 14661 transitions. Word has length 143 [2024-10-12 21:41:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:08,407 INFO L471 AbstractCegarLoop]: Abstraction has 10764 states and 14661 transitions. [2024-10-12 21:41:08,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 21:41:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 10764 states and 14661 transitions. [2024-10-12 21:41:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-12 21:41:08,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:08,422 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:08,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 21:41:08,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:08,623 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2014549899, now seen corresponding path program 1 times [2024-10-12 21:41:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504026315] [2024-10-12 21:41:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:41:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 21:41:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-12 21:41:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-12 21:41:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 21:41:08,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:08,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504026315] [2024-10-12 21:41:08,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504026315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:08,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153038845] [2024-10-12 21:41:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:08,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:08,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:08,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:08,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 21:41:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:08,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:08,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 21:41:08,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153038845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:08,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511459246] [2024-10-12 21:41:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:08,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:08,850 INFO L87 Difference]: Start difference. First operand 10764 states and 14661 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 21:41:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:10,321 INFO L93 Difference]: Finished difference Result 31714 states and 43626 transitions. [2024-10-12 21:41:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2024-10-12 21:41:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:10,408 INFO L225 Difference]: With dead ends: 31714 [2024-10-12 21:41:10,408 INFO L226 Difference]: Without dead ends: 20961 [2024-10-12 21:41:10,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:10,445 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 135 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:10,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 447 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2024-10-12 21:41:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 20947. [2024-10-12 21:41:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20947 states, 17615 states have (on average 1.3526539880783424) internal successors, (23827), 17857 states have internal predecessors, (23827), 1791 states have call successors, (1791), 1340 states have call predecessors, (1791), 1540 states have return successors, (3182), 1765 states have call predecessors, (3182), 1791 states have call successors, (3182) [2024-10-12 21:41:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20947 states to 20947 states and 28800 transitions. [2024-10-12 21:41:12,102 INFO L78 Accepts]: Start accepts. Automaton has 20947 states and 28800 transitions. Word has length 144 [2024-10-12 21:41:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:12,103 INFO L471 AbstractCegarLoop]: Abstraction has 20947 states and 28800 transitions. [2024-10-12 21:41:12,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 21:41:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 20947 states and 28800 transitions. [2024-10-12 21:41:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-12 21:41:12,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:12,131 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:12,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 21:41:12,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 21:41:12,333 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:12,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash 870056262, now seen corresponding path program 1 times [2024-10-12 21:41:12,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:12,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173273063] [2024-10-12 21:41:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:41:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-12 21:41:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-12 21:41:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-12 21:41:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 21:41:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173273063] [2024-10-12 21:41:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173273063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759292855] [2024-10-12 21:41:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:12,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:12,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:12,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 21:41:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:12,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:12,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 21:41:12,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:12,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759292855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:12,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:12,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564168708] [2024-10-12 21:41:12,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:12,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:12,630 INFO L87 Difference]: Start difference. First operand 20947 states and 28800 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 21:41:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:13,489 INFO L93 Difference]: Finished difference Result 32214 states and 44605 transitions. [2024-10-12 21:41:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2024-10-12 21:41:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:13,548 INFO L225 Difference]: With dead ends: 32214 [2024-10-12 21:41:13,548 INFO L226 Difference]: Without dead ends: 13528 [2024-10-12 21:41:13,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:13,594 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 106 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:13,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 177 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2024-10-12 21:41:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 12452. [2024-10-12 21:41:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12452 states, 10476 states have (on average 1.3036464299350898) internal successors, (13657), 10582 states have internal predecessors, (13657), 1071 states have call successors, (1071), 816 states have call predecessors, (1071), 904 states have return successors, (1554), 1061 states have call predecessors, (1554), 1071 states have call successors, (1554) [2024-10-12 21:41:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 16282 transitions. [2024-10-12 21:41:15,201 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 16282 transitions. Word has length 144 [2024-10-12 21:41:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:15,201 INFO L471 AbstractCegarLoop]: Abstraction has 12452 states and 16282 transitions. [2024-10-12 21:41:15,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 21:41:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 16282 transitions. [2024-10-12 21:41:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-12 21:41:15,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:15,215 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:15,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 21:41:15,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-12 21:41:15,416 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:15,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 157059094, now seen corresponding path program 1 times [2024-10-12 21:41:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211706893] [2024-10-12 21:41:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 21:41:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-12 21:41:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-12 21:41:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 21:41:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211706893] [2024-10-12 21:41:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211706893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227066098] [2024-10-12 21:41:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:15,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:15,550 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:15,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 21:41:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:15,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:15,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 21:41:15,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:15,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227066098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:15,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:15,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721299086] [2024-10-12 21:41:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:15,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:15,710 INFO L87 Difference]: Start difference. First operand 12452 states and 16282 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-12 21:41:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:17,657 INFO L93 Difference]: Finished difference Result 36165 states and 47894 transitions. [2024-10-12 21:41:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2024-10-12 21:41:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:17,750 INFO L225 Difference]: With dead ends: 36165 [2024-10-12 21:41:17,750 INFO L226 Difference]: Without dead ends: 23728 [2024-10-12 21:41:17,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:17,789 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 128 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:17,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 316 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23728 states. [2024-10-12 21:41:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23728 to 23086. [2024-10-12 21:41:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23086 states, 19348 states have (on average 1.2919681620839363) internal successors, (24997), 19554 states have internal predecessors, (24997), 2041 states have call successors, (2041), 1532 states have call predecessors, (2041), 1696 states have return successors, (3538), 2015 states have call predecessors, (3538), 2041 states have call successors, (3538) [2024-10-12 21:41:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23086 states to 23086 states and 30576 transitions. [2024-10-12 21:41:19,781 INFO L78 Accepts]: Start accepts. Automaton has 23086 states and 30576 transitions. Word has length 145 [2024-10-12 21:41:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:19,781 INFO L471 AbstractCegarLoop]: Abstraction has 23086 states and 30576 transitions. [2024-10-12 21:41:19,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-12 21:41:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 23086 states and 30576 transitions. [2024-10-12 21:41:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-12 21:41:19,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:19,795 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:19,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:19,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 21:41:20,000 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:20,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1050549996, now seen corresponding path program 1 times [2024-10-12 21:41:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832033106] [2024-10-12 21:41:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 21:41:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:41:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-12 21:41:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-12 21:41:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-12 21:41:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832033106] [2024-10-12 21:41:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832033106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:41:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68067048] [2024-10-12 21:41:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:20,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:41:20,081 INFO L87 Difference]: Start difference. First operand 23086 states and 30576 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:41:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:22,277 INFO L93 Difference]: Finished difference Result 44647 states and 58860 transitions. [2024-10-12 21:41:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:41:22,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2024-10-12 21:41:22,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:22,373 INFO L225 Difference]: With dead ends: 44647 [2024-10-12 21:41:22,374 INFO L226 Difference]: Without dead ends: 21574 [2024-10-12 21:41:22,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:22,424 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 293 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:22,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 204 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:41:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21574 states. [2024-10-12 21:41:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21574 to 19418. [2024-10-12 21:41:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19418 states, 16262 states have (on average 1.2919075144508672) internal successors, (21009), 16625 states have internal predecessors, (21009), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-12 21:41:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 25547 transitions. [2024-10-12 21:41:24,433 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 25547 transitions. Word has length 145 [2024-10-12 21:41:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:24,434 INFO L471 AbstractCegarLoop]: Abstraction has 19418 states and 25547 transitions. [2024-10-12 21:41:24,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:41:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 25547 transitions. [2024-10-12 21:41:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-12 21:41:24,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:24,447 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:24,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:41:24,448 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:24,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1743829066, now seen corresponding path program 1 times [2024-10-12 21:41:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233716456] [2024-10-12 21:41:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-12 21:41:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-12 21:41:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-12 21:41:24,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233716456] [2024-10-12 21:41:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233716456] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039572491] [2024-10-12 21:41:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:24,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:24,547 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:24,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 21:41:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:24,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:24,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 21:41:24,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039572491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:24,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:24,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:41:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339666943] [2024-10-12 21:41:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:24,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:24,694 INFO L87 Difference]: Start difference. First operand 19418 states and 25547 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 21:41:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:26,325 INFO L93 Difference]: Finished difference Result 32606 states and 44397 transitions. [2024-10-12 21:41:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2024-10-12 21:41:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:26,386 INFO L225 Difference]: With dead ends: 32606 [2024-10-12 21:41:26,387 INFO L226 Difference]: Without dead ends: 19433 [2024-10-12 21:41:26,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:26,417 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 120 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:26,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 384 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2024-10-12 21:41:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19394. [2024-10-12 21:41:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19394 states, 16238 states have (on average 1.263948762162828) internal successors, (20524), 16601 states have internal predecessors, (20524), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-12 21:41:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19394 states to 19394 states and 25062 transitions. [2024-10-12 21:41:27,963 INFO L78 Accepts]: Start accepts. Automaton has 19394 states and 25062 transitions. Word has length 149 [2024-10-12 21:41:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:27,963 INFO L471 AbstractCegarLoop]: Abstraction has 19394 states and 25062 transitions. [2024-10-12 21:41:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 21:41:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 19394 states and 25062 transitions. [2024-10-12 21:41:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 21:41:27,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:27,975 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:27,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:28,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 21:41:28,176 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:28,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash 446624198, now seen corresponding path program 1 times [2024-10-12 21:41:28,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:28,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519614012] [2024-10-12 21:41:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:28,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:41:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:41:28,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:28,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519614012] [2024-10-12 21:41:28,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519614012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:28,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772234379] [2024-10-12 21:41:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:28,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:28,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:28,265 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:28,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 21:41:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:28,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 21:41:28,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 21:41:28,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:28,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772234379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:28,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:28,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-12 21:41:28,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745090470] [2024-10-12 21:41:28,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:28,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:28,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:41:28,470 INFO L87 Difference]: Start difference. First operand 19394 states and 25062 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:30,397 INFO L93 Difference]: Finished difference Result 38705 states and 50497 transitions. [2024-10-12 21:41:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:30,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-12 21:41:30,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:30,465 INFO L225 Difference]: With dead ends: 38705 [2024-10-12 21:41:30,465 INFO L226 Difference]: Without dead ends: 19322 [2024-10-12 21:41:30,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:41:30,499 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 170 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:30,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 240 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19322 states. [2024-10-12 21:41:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19322 to 19322. [2024-10-12 21:41:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19322 states, 16166 states have (on average 1.2306074477298032) internal successors, (19894), 16529 states have internal predecessors, (19894), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-12 21:41:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19322 states to 19322 states and 24432 transitions. [2024-10-12 21:41:32,102 INFO L78 Accepts]: Start accepts. Automaton has 19322 states and 24432 transitions. Word has length 151 [2024-10-12 21:41:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:32,102 INFO L471 AbstractCegarLoop]: Abstraction has 19322 states and 24432 transitions. [2024-10-12 21:41:32,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 19322 states and 24432 transitions. [2024-10-12 21:41:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 21:41:32,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:32,117 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:32,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:32,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:32,318 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:32,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1200738744, now seen corresponding path program 1 times [2024-10-12 21:41:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560369050] [2024-10-12 21:41:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:41:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:41:32,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560369050] [2024-10-12 21:41:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560369050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554815449] [2024-10-12 21:41:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:32,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:32,417 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:32,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 21:41:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:32,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 21:41:32,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 21:41:32,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554815449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:32,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:32,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-12 21:41:32,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601203616] [2024-10-12 21:41:32,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:32,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:41:32,614 INFO L87 Difference]: Start difference. First operand 19322 states and 24432 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:34,073 INFO L93 Difference]: Finished difference Result 36139 states and 46947 transitions. [2024-10-12 21:41:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:41:34,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-12 21:41:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:34,137 INFO L225 Difference]: With dead ends: 36139 [2024-10-12 21:41:34,137 INFO L226 Difference]: Without dead ends: 17834 [2024-10-12 21:41:34,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:41:34,168 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 193 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:34,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 235 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:41:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17834 states. [2024-10-12 21:41:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17834 to 15760. [2024-10-12 21:41:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15760 states, 13204 states have (on average 1.1926688882156922) internal successors, (15748), 13494 states have internal predecessors, (15748), 1251 states have call successors, (1251), 952 states have call predecessors, (1251), 1304 states have return successors, (2325), 1317 states have call predecessors, (2325), 1251 states have call successors, (2325) [2024-10-12 21:41:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15760 states to 15760 states and 19324 transitions. [2024-10-12 21:41:35,529 INFO L78 Accepts]: Start accepts. Automaton has 15760 states and 19324 transitions. Word has length 151 [2024-10-12 21:41:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:35,529 INFO L471 AbstractCegarLoop]: Abstraction has 15760 states and 19324 transitions. [2024-10-12 21:41:35,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 15760 states and 19324 transitions. [2024-10-12 21:41:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 21:41:35,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:35,541 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:35,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 21:41:35,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:35,741 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:35,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2055643978, now seen corresponding path program 1 times [2024-10-12 21:41:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863259335] [2024-10-12 21:41:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:41:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:41:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863259335] [2024-10-12 21:41:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863259335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437277606] [2024-10-12 21:41:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:35,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:35,841 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:35,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 21:41:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:35,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 21:41:35,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 21:41:36,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:36,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437277606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:36,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-12 21:41:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240567862] [2024-10-12 21:41:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:36,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:41:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:41:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:41:36,037 INFO L87 Difference]: Start difference. First operand 15760 states and 19324 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:37,163 INFO L93 Difference]: Finished difference Result 23982 states and 29693 transitions. [2024-10-12 21:41:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-12 21:41:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:37,220 INFO L225 Difference]: With dead ends: 23982 [2024-10-12 21:41:37,220 INFO L226 Difference]: Without dead ends: 13068 [2024-10-12 21:41:37,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:41:37,236 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 161 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:37,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 226 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:41:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13068 states. [2024-10-12 21:41:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13068 to 9982. [2024-10-12 21:41:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 8382 states have (on average 1.1712001908852303) internal successors, (9817), 8549 states have internal predecessors, (9817), 799 states have call successors, (799), 596 states have call predecessors, (799), 800 states have return successors, (1455), 838 states have call predecessors, (1455), 799 states have call successors, (1455) [2024-10-12 21:41:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 12071 transitions. [2024-10-12 21:41:38,089 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 12071 transitions. Word has length 151 [2024-10-12 21:41:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:38,089 INFO L471 AbstractCegarLoop]: Abstraction has 9982 states and 12071 transitions. [2024-10-12 21:41:38,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 12071 transitions. [2024-10-12 21:41:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 21:41:38,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:38,096 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:38,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 21:41:38,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:38,300 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:38,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1767966968, now seen corresponding path program 1 times [2024-10-12 21:41:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891445848] [2024-10-12 21:41:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:41:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:41:38,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891445848] [2024-10-12 21:41:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891445848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944300599] [2024-10-12 21:41:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:38,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:38,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:38,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 21:41:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:38,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:41:38,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-12 21:41:38,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:38,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944300599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:38,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:38,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-12 21:41:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440375889] [2024-10-12 21:41:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:38,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:38,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:38,519 INFO L87 Difference]: Start difference. First operand 9982 states and 12071 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:39,322 INFO L93 Difference]: Finished difference Result 19589 states and 24156 transitions. [2024-10-12 21:41:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-12 21:41:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:39,359 INFO L225 Difference]: With dead ends: 19589 [2024-10-12 21:41:39,359 INFO L226 Difference]: Without dead ends: 9620 [2024-10-12 21:41:39,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:39,375 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:39,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9620 states. [2024-10-12 21:41:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9620 to 9600. [2024-10-12 21:41:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9600 states, 8023 states have (on average 1.1494453446341768) internal successors, (9222), 8172 states have internal predecessors, (9222), 799 states have call successors, (799), 596 states have call predecessors, (799), 777 states have return successors, (1335), 833 states have call predecessors, (1335), 799 states have call successors, (1335) [2024-10-12 21:41:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9600 states to 9600 states and 11356 transitions. [2024-10-12 21:41:40,295 INFO L78 Accepts]: Start accepts. Automaton has 9600 states and 11356 transitions. Word has length 151 [2024-10-12 21:41:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:40,295 INFO L471 AbstractCegarLoop]: Abstraction has 9600 states and 11356 transitions. [2024-10-12 21:41:40,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9600 states and 11356 transitions. [2024-10-12 21:41:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 21:41:40,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:40,299 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:40,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 21:41:40,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:40,500 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:40,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash -470597814, now seen corresponding path program 1 times [2024-10-12 21:41:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127614351] [2024-10-12 21:41:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:40,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:41:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:41:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:41:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-12 21:41:40,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127614351] [2024-10-12 21:41:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127614351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146842626] [2024-10-12 21:41:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:40,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:40,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:40,588 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:40,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 21:41:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:40,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:41:40,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-12 21:41:40,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:40,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146842626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-12 21:41:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051480072] [2024-10-12 21:41:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:40,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:41:40,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:41:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:40,712 INFO L87 Difference]: Start difference. First operand 9600 states and 11356 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:41,363 INFO L93 Difference]: Finished difference Result 15867 states and 19034 transitions. [2024-10-12 21:41:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:41:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-12 21:41:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:41,394 INFO L225 Difference]: With dead ends: 15867 [2024-10-12 21:41:41,394 INFO L226 Difference]: Without dead ends: 6277 [2024-10-12 21:41:41,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:41,408 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:41,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2024-10-12 21:41:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 6277. [2024-10-12 21:41:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6277 states, 5296 states have (on average 1.1367069486404835) internal successors, (6020), 5359 states have internal predecessors, (6020), 514 states have call successors, (514), 386 states have call predecessors, (514), 466 states have return successors, (732), 532 states have call predecessors, (732), 514 states have call successors, (732) [2024-10-12 21:41:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 7266 transitions. [2024-10-12 21:41:41,932 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 7266 transitions. Word has length 151 [2024-10-12 21:41:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:41,932 INFO L471 AbstractCegarLoop]: Abstraction has 6277 states and 7266 transitions. [2024-10-12 21:41:41,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:41:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 7266 transitions. [2024-10-12 21:41:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-12 21:41:41,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:41,937 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:41,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 21:41:42,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:42,138 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:42,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash 778141538, now seen corresponding path program 1 times [2024-10-12 21:41:42,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:42,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616970551] [2024-10-12 21:41:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 21:41:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 21:41:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-12 21:41:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-12 21:41:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-12 21:41:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-12 21:41:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616970551] [2024-10-12 21:41:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616970551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29700449] [2024-10-12 21:41:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:42,268 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:42,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 21:41:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:42,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:41:42,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-12 21:41:42,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:42,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29700449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:42,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:42,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-12 21:41:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013504155] [2024-10-12 21:41:42,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:42,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:42,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:42,406 INFO L87 Difference]: Start difference. First operand 6277 states and 7266 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:41:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:42,697 INFO L93 Difference]: Finished difference Result 8249 states and 9527 transitions. [2024-10-12 21:41:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 179 [2024-10-12 21:41:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:42,716 INFO L225 Difference]: With dead ends: 8249 [2024-10-12 21:41:42,716 INFO L226 Difference]: Without dead ends: 1914 [2024-10-12 21:41:42,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:41:42,722 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 115 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:42,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 336 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-10-12 21:41:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2024-10-12 21:41:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1609 states have (on average 1.1050341827221877) internal successors, (1778), 1621 states have internal predecessors, (1778), 174 states have call successors, (174), 122 states have call predecessors, (174), 130 states have return successors, (189), 171 states have call predecessors, (189), 174 states have call successors, (189) [2024-10-12 21:41:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2141 transitions. [2024-10-12 21:41:42,888 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2141 transitions. Word has length 179 [2024-10-12 21:41:42,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:42,889 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2141 transitions. [2024-10-12 21:41:42,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:41:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2141 transitions. [2024-10-12 21:41:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-12 21:41:42,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:42,891 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:42,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-12 21:41:43,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:43,091 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:43,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -79866157, now seen corresponding path program 1 times [2024-10-12 21:41:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405455136] [2024-10-12 21:41:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:43,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 21:41:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-12 21:41:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-12 21:41:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-12 21:41:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-12 21:41:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405455136] [2024-10-12 21:41:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405455136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:41:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567432025] [2024-10-12 21:41:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:43,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:41:43,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:41:43,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:41:43,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 21:41:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:43,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 21:41:43,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:41:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 21:41:43,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:41:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567432025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:41:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2024-10-12 21:41:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540144874] [2024-10-12 21:41:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:43,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:41:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:41:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:43,354 INFO L87 Difference]: Start difference. First operand 1914 states and 2141 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-12 21:41:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:43,534 INFO L93 Difference]: Finished difference Result 3323 states and 3745 transitions. [2024-10-12 21:41:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:41:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 181 [2024-10-12 21:41:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:43,551 INFO L225 Difference]: With dead ends: 3323 [2024-10-12 21:41:43,551 INFO L226 Difference]: Without dead ends: 1914 [2024-10-12 21:41:43,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:41:43,553 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 86 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:43,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 295 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:41:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-10-12 21:41:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2024-10-12 21:41:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1609 states have (on average 1.093847110006215) internal successors, (1760), 1621 states have internal predecessors, (1760), 174 states have call successors, (174), 122 states have call predecessors, (174), 130 states have return successors, (189), 171 states have call predecessors, (189), 174 states have call successors, (189) [2024-10-12 21:41:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2123 transitions. [2024-10-12 21:41:43,721 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2123 transitions. Word has length 181 [2024-10-12 21:41:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:43,721 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2123 transitions. [2024-10-12 21:41:43,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-12 21:41:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2123 transitions. [2024-10-12 21:41:43,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-12 21:41:43,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:41:43,724 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:41:43,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 21:41:43,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-12 21:41:43,924 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:41:43,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:41:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash 677916105, now seen corresponding path program 1 times [2024-10-12 21:41:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:41:43,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469368467] [2024-10-12 21:41:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:41:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:41:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:41:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:41:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 21:41:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:41:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 21:41:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 21:41:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-12 21:41:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-12 21:41:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-12 21:41:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:41:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-12 21:41:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:41:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-12 21:41:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:41:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469368467] [2024-10-12 21:41:44,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469368467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:41:44,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:41:44,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:41:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092606614] [2024-10-12 21:41:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:41:44,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:41:44,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:41:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:41:44,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:41:44,082 INFO L87 Difference]: Start difference. First operand 1914 states and 2123 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-12 21:41:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:41:44,987 INFO L93 Difference]: Finished difference Result 2137 states and 2364 transitions. [2024-10-12 21:41:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:41:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 183 [2024-10-12 21:41:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:41:45,005 INFO L225 Difference]: With dead ends: 2137 [2024-10-12 21:41:45,006 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 21:41:45,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:41:45,008 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 622 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:41:45,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 631 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:41:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 21:41:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 21:41:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:41:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 21:41:45,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2024-10-12 21:41:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:41:45,025 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 21:41:45,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-12 21:41:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 21:41:45,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 21:41:45,028 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-12 21:41:45,028 INFO L782 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-12 21:41:45,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-12 21:41:45,031 INFO L407 BasicCegarLoop]: Path program histogram: [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] [2024-10-12 21:41:45,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.