/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:34:56,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:34:56,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:34:56,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:34:56,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:34:56,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:34:56,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:34:56,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:34:56,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:34:56,326 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:34:56,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:34:56,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:34:56,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:34:56,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:34:56,328 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:34:56,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:34:56,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:34:56,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:34:56,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:34:56,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:34:56,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:34:56,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:34:56,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:34:56,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:34:56,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:34:56,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:34:56,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:34:56,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:34:56,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:34:56,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:34:56,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:34:56,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:34:56,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:34:56,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:34:56,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:34:56,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:34:56,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:34:56,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:34:56,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:34:56,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:34:56,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:34:56,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:34:56,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:34:56,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:34:56,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:34:56,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:34:56,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:34:56,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:34:56,573 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:34:56,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-19 01:34:57,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:34:57,897 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:34:57,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-19 01:34:57,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8717c7538/29bce62ba5514372b414130f170281b5/FLAGd974bc334 [2023-12-19 01:34:57,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8717c7538/29bce62ba5514372b414130f170281b5 [2023-12-19 01:34:57,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:34:57,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:34:57,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:34:57,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:34:57,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:34:57,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:34:57" (1/1) ... [2023-12-19 01:34:57,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734babee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:57, skipping insertion in model container [2023-12-19 01:34:57,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:34:57" (1/1) ... [2023-12-19 01:34:57,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:34:58,126 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2023-12-19 01:34:58,185 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2023-12-19 01:34:58,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:34:58,270 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:34:58,284 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2023-12-19 01:34:58,307 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2023-12-19 01:34:58,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:34:58,386 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:34:58,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58 WrapperNode [2023-12-19 01:34:58,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:34:58,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:34:58,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:34:58,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:34:58,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,448 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 594 [2023-12-19 01:34:58,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:34:58,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:34:58,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:34:58,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:34:58,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,483 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]. [2023-12-19 01:34:58,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:34:58,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:34:58,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:34:58,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:34:58,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (1/1) ... [2023-12-19 01:34:58,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:34:58,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:34:58,568 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) [2023-12-19 01:34:58,613 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 [2023-12-19 01:34:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:34:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:34:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:34:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:34:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:34:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:34:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:34:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:34:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:34:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:34:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:34:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:34:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:34:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:34:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:34:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:34:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:34:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:34:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:34:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:34:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:34:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:34:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:34:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:34:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:34:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:34:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:34:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:34:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:34:58,718 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:34:58,720 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:34:59,127 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:34:59,194 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:34:59,194 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-19 01:34:59,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:34:59 BoogieIcfgContainer [2023-12-19 01:34:59,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:34:59,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:34:59,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:34:59,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:34:59,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:34:57" (1/3) ... [2023-12-19 01:34:59,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d477ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:34:59, skipping insertion in model container [2023-12-19 01:34:59,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:34:58" (2/3) ... [2023-12-19 01:34:59,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d477ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:34:59, skipping insertion in model container [2023-12-19 01:34:59,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:34:59" (3/3) ... [2023-12-19 01:34:59,201 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-19 01:34:59,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:34:59,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:34:59,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:34:59,381 INFO L357 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, mHoare=true, 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;@30822628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:34:59,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:34:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 211 states have (on average 1.6729857819905214) internal successors, (353), 219 states have internal predecessors, (353), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-19 01:34:59,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:34:59,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:59,410 INFO L195 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] [2023-12-19 01:34:59,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:59,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1817163777, now seen corresponding path program 1 times [2023-12-19 01:34:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269730953] [2023-12-19 01:34:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:34:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:34:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:34:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:34:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:34:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269730953] [2023-12-19 01:35:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269730953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:35:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147480420] [2023-12-19 01:35:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:00,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:35:00,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:35:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:35:00,037 INFO L87 Difference]: Start difference. First operand has 263 states, 211 states have (on average 1.6729857819905214) internal successors, (353), 219 states have internal predecessors, (353), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:01,132 INFO L93 Difference]: Finished difference Result 662 states and 1053 transitions. [2023-12-19 01:35:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:35:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:35:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:01,153 INFO L225 Difference]: With dead ends: 662 [2023-12-19 01:35:01,153 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 01:35:01,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:35:01,163 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 749 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1282 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:35:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 01:35:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 349. [2023-12-19 01:35:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 279 states have (on average 1.5340501792114696) internal successors, (428), 287 states have internal predecessors, (428), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2023-12-19 01:35:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 525 transitions. [2023-12-19 01:35:01,255 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 525 transitions. Word has length 58 [2023-12-19 01:35:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:01,255 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 525 transitions. [2023-12-19 01:35:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 525 transitions. [2023-12-19 01:35:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:35:01,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:01,264 INFO L195 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] [2023-12-19 01:35:01,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:35:01,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:01,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash -549530817, now seen corresponding path program 1 times [2023-12-19 01:35:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:01,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33063114] [2023-12-19 01:35:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:01,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33063114] [2023-12-19 01:35:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33063114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:01,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:35:01,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148174609] [2023-12-19 01:35:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:01,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:35:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:35:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:35:01,459 INFO L87 Difference]: Start difference. First operand 349 states and 525 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:02,232 INFO L93 Difference]: Finished difference Result 543 states and 803 transitions. [2023-12-19 01:35:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:35:02,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 01:35:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:02,243 INFO L225 Difference]: With dead ends: 543 [2023-12-19 01:35:02,243 INFO L226 Difference]: Without dead ends: 377 [2023-12-19 01:35:02,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:35:02,245 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 309 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:02,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1422 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:35:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-19 01:35:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 357. [2023-12-19 01:35:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 293 states have internal predecessors, (434), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2023-12-19 01:35:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 533 transitions. [2023-12-19 01:35:02,275 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 533 transitions. Word has length 58 [2023-12-19 01:35:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:02,276 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 533 transitions. [2023-12-19 01:35:02,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 533 transitions. [2023-12-19 01:35:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:35:02,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:02,277 INFO L195 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] [2023-12-19 01:35:02,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:35:02,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:02,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1501453181, now seen corresponding path program 1 times [2023-12-19 01:35:02,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:02,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034867893] [2023-12-19 01:35:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:02,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034867893] [2023-12-19 01:35:02,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034867893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:02,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:02,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:35:02,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256209592] [2023-12-19 01:35:02,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:35:02,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:35:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:35:02,424 INFO L87 Difference]: Start difference. First operand 357 states and 533 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:03,109 INFO L93 Difference]: Finished difference Result 563 states and 827 transitions. [2023-12-19 01:35:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:35:03,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 01:35:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:03,112 INFO L225 Difference]: With dead ends: 563 [2023-12-19 01:35:03,112 INFO L226 Difference]: Without dead ends: 389 [2023-12-19 01:35:03,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:35:03,113 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 468 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:03,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1266 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:35:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-19 01:35:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 365. [2023-12-19 01:35:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 291 states have (on average 1.5120274914089347) internal successors, (440), 299 states have internal predecessors, (440), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2023-12-19 01:35:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 541 transitions. [2023-12-19 01:35:03,130 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 541 transitions. Word has length 58 [2023-12-19 01:35:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:03,130 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 541 transitions. [2023-12-19 01:35:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 541 transitions. [2023-12-19 01:35:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:35:03,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:03,131 INFO L195 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] [2023-12-19 01:35:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:35:03,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:03,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1563492795, now seen corresponding path program 1 times [2023-12-19 01:35:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643654659] [2023-12-19 01:35:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643654659] [2023-12-19 01:35:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643654659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:35:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880444465] [2023-12-19 01:35:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:35:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:35:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:35:03,231 INFO L87 Difference]: Start difference. First operand 365 states and 541 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:03,935 INFO L93 Difference]: Finished difference Result 683 states and 992 transitions. [2023-12-19 01:35:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:35:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:35:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:03,939 INFO L225 Difference]: With dead ends: 683 [2023-12-19 01:35:03,939 INFO L226 Difference]: Without dead ends: 500 [2023-12-19 01:35:03,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:35:03,941 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 702 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:03,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1008 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:35:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-19 01:35:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 449. [2023-12-19 01:35:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 356 states have (on average 1.4803370786516854) internal successors, (527), 365 states have internal predecessors, (527), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2023-12-19 01:35:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 652 transitions. [2023-12-19 01:35:03,961 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 652 transitions. Word has length 58 [2023-12-19 01:35:03,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:03,961 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 652 transitions. [2023-12-19 01:35:03,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 652 transitions. [2023-12-19 01:35:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:35:03,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:03,962 INFO L195 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] [2023-12-19 01:35:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:35:03,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:03,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1782347513, now seen corresponding path program 1 times [2023-12-19 01:35:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:03,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412824975] [2023-12-19 01:35:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:03,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412824975] [2023-12-19 01:35:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412824975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:35:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034990944] [2023-12-19 01:35:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:35:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:35:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:35:04,074 INFO L87 Difference]: Start difference. First operand 449 states and 652 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:04,744 INFO L93 Difference]: Finished difference Result 805 states and 1127 transitions. [2023-12-19 01:35:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:35:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:35:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:04,747 INFO L225 Difference]: With dead ends: 805 [2023-12-19 01:35:04,747 INFO L226 Difference]: Without dead ends: 547 [2023-12-19 01:35:04,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:35:04,748 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 934 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:04,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 904 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:35:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-19 01:35:04,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 459. [2023-12-19 01:35:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 364 states have (on average 1.4697802197802199) internal successors, (535), 373 states have internal predecessors, (535), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2023-12-19 01:35:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 660 transitions. [2023-12-19 01:35:04,779 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 660 transitions. Word has length 58 [2023-12-19 01:35:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:04,779 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 660 transitions. [2023-12-19 01:35:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 660 transitions. [2023-12-19 01:35:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:35:04,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:04,793 INFO L195 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] [2023-12-19 01:35:04,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:35:04,793 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:04,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2089917957, now seen corresponding path program 1 times [2023-12-19 01:35:04,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:04,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720697347] [2023-12-19 01:35:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:04,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720697347] [2023-12-19 01:35:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720697347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:04,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000349207] [2023-12-19 01:35:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:04,959 INFO L87 Difference]: Start difference. First operand 459 states and 660 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:05,418 INFO L93 Difference]: Finished difference Result 1041 states and 1447 transitions. [2023-12-19 01:35:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:35:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:35:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:05,422 INFO L225 Difference]: With dead ends: 1041 [2023-12-19 01:35:05,422 INFO L226 Difference]: Without dead ends: 774 [2023-12-19 01:35:05,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:35:05,426 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 734 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:05,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 856 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:35:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-12-19 01:35:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 720. [2023-12-19 01:35:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 559 states have (on average 1.4186046511627908) internal successors, (793), 575 states have internal predecessors, (793), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2023-12-19 01:35:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1010 transitions. [2023-12-19 01:35:05,511 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1010 transitions. Word has length 58 [2023-12-19 01:35:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:05,512 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1010 transitions. [2023-12-19 01:35:05,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:35:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1010 transitions. [2023-12-19 01:35:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:35:05,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:05,514 INFO L195 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] [2023-12-19 01:35:05,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:35:05,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:05,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1061083199, now seen corresponding path program 1 times [2023-12-19 01:35:05,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:05,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768509926] [2023-12-19 01:35:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:05,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:05,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768509926] [2023-12-19 01:35:05,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768509926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:05,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:05,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:05,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299469890] [2023-12-19 01:35:05,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:05,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:05,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:05,631 INFO L87 Difference]: Start difference. First operand 720 states and 1010 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:06,049 INFO L93 Difference]: Finished difference Result 1804 states and 2456 transitions. [2023-12-19 01:35:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:35:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-19 01:35:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:06,055 INFO L225 Difference]: With dead ends: 1804 [2023-12-19 01:35:06,055 INFO L226 Difference]: Without dead ends: 1285 [2023-12-19 01:35:06,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:35:06,057 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:06,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 735 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:35:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-19 01:35:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1131. [2023-12-19 01:35:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 870 states have (on average 1.3712643678160918) internal successors, (1193), 893 states have internal predecessors, (1193), 141 states have call successors, (141), 94 states have call predecessors, (141), 118 states have return successors, (195), 150 states have call predecessors, (195), 137 states have call successors, (195) [2023-12-19 01:35:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1529 transitions. [2023-12-19 01:35:06,169 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1529 transitions. Word has length 59 [2023-12-19 01:35:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:06,169 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1529 transitions. [2023-12-19 01:35:06,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1529 transitions. [2023-12-19 01:35:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:35:06,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:06,171 INFO L195 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] [2023-12-19 01:35:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:35:06,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:06,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash 578816900, now seen corresponding path program 1 times [2023-12-19 01:35:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:06,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061673573] [2023-12-19 01:35:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061673573] [2023-12-19 01:35:06,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061673573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:06,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:06,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:06,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118379537] [2023-12-19 01:35:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:06,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:06,223 INFO L87 Difference]: Start difference. First operand 1131 states and 1529 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:06,778 INFO L93 Difference]: Finished difference Result 3091 states and 4092 transitions. [2023-12-19 01:35:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:35:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-19 01:35:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:06,787 INFO L225 Difference]: With dead ends: 3091 [2023-12-19 01:35:06,788 INFO L226 Difference]: Without dead ends: 2131 [2023-12-19 01:35:06,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:06,800 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 492 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 830 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:35:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-19 01:35:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1947. [2023-12-19 01:35:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1488 states have (on average 1.334005376344086) internal successors, (1985), 1517 states have internal predecessors, (1985), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2023-12-19 01:35:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2553 transitions. [2023-12-19 01:35:06,980 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2553 transitions. Word has length 60 [2023-12-19 01:35:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:06,981 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2553 transitions. [2023-12-19 01:35:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2553 transitions. [2023-12-19 01:35:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:35:06,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:06,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:06,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:35:06,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:06,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 369508739, now seen corresponding path program 1 times [2023-12-19 01:35:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:06,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430385499] [2023-12-19 01:35:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430385499] [2023-12-19 01:35:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430385499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807280975] [2023-12-19 01:35:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:07,104 INFO L87 Difference]: Start difference. First operand 1947 states and 2553 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:07,825 INFO L93 Difference]: Finished difference Result 4611 states and 5957 transitions. [2023-12-19 01:35:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:35:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-19 01:35:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:07,837 INFO L225 Difference]: With dead ends: 4611 [2023-12-19 01:35:07,837 INFO L226 Difference]: Without dead ends: 2855 [2023-12-19 01:35:07,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:07,842 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 723 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:07,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 747 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:35:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2023-12-19 01:35:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2613. [2023-12-19 01:35:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 1990 states have (on average 1.3180904522613066) internal successors, (2623), 2027 states have internal predecessors, (2623), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2023-12-19 01:35:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3380 transitions. [2023-12-19 01:35:07,969 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3380 transitions. Word has length 66 [2023-12-19 01:35:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:07,970 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3380 transitions. [2023-12-19 01:35:07,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3380 transitions. [2023-12-19 01:35:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 01:35:07,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:07,975 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:35:07,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:07,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1946506328, now seen corresponding path program 1 times [2023-12-19 01:35:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553618594] [2023-12-19 01:35:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:08,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553618594] [2023-12-19 01:35:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553618594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770789018] [2023-12-19 01:35:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:08,055 INFO L87 Difference]: Start difference. First operand 2613 states and 3380 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:35:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:08,699 INFO L93 Difference]: Finished difference Result 3333 states and 4257 transitions. [2023-12-19 01:35:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:35:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-19 01:35:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:08,713 INFO L225 Difference]: With dead ends: 3333 [2023-12-19 01:35:08,713 INFO L226 Difference]: Without dead ends: 3330 [2023-12-19 01:35:08,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:35:08,715 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1289 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:08,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 562 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:35:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2023-12-19 01:35:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3063. [2023-12-19 01:35:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 2331 states have (on average 1.308880308880309) internal successors, (3051), 2373 states have internal predecessors, (3051), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2023-12-19 01:35:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3937 transitions. [2023-12-19 01:35:08,884 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3937 transitions. Word has length 67 [2023-12-19 01:35:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:08,884 INFO L495 AbstractCegarLoop]: Abstraction has 3063 states and 3937 transitions. [2023-12-19 01:35:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:35:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3937 transitions. [2023-12-19 01:35:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:35:08,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:08,887 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:35:08,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:08,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash -213033363, now seen corresponding path program 1 times [2023-12-19 01:35:08,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:08,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129741113] [2023-12-19 01:35:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129741113] [2023-12-19 01:35:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129741113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:35:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020993307] [2023-12-19 01:35:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:35:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:35:09,096 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) [2023-12-19 01:35:09,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:35:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:09,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:35:09,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:35:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:09,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:35:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020993307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:35:09,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:35:09,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-19 01:35:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768495097] [2023-12-19 01:35:09,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:35:09,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:35:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:35:09,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:35:09,593 INFO L87 Difference]: Start difference. First operand 3063 states and 3937 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 01:35:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:11,091 INFO L93 Difference]: Finished difference Result 7130 states and 9049 transitions. [2023-12-19 01:35:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:35:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-19 01:35:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:11,120 INFO L225 Difference]: With dead ends: 7130 [2023-12-19 01:35:11,120 INFO L226 Difference]: Without dead ends: 7127 [2023-12-19 01:35:11,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:35:11,124 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1795 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:11,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 1127 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:35:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2023-12-19 01:35:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 4689. [2023-12-19 01:35:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3571 states have (on average 1.3057966956034723) internal successors, (4663), 3635 states have internal predecessors, (4663), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2023-12-19 01:35:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6011 transitions. [2023-12-19 01:35:11,511 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6011 transitions. Word has length 68 [2023-12-19 01:35:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:11,511 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 6011 transitions. [2023-12-19 01:35:11,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 01:35:11,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6011 transitions. [2023-12-19 01:35:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 01:35:11,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:11,513 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:11,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:35:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 01:35:11,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:11,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 413265768, now seen corresponding path program 2 times [2023-12-19 01:35:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403118122] [2023-12-19 01:35:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403118122] [2023-12-19 01:35:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403118122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494995925] [2023-12-19 01:35:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:11,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:11,783 INFO L87 Difference]: Start difference. First operand 4689 states and 6011 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:35:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:12,329 INFO L93 Difference]: Finished difference Result 7145 states and 9158 transitions. [2023-12-19 01:35:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:35:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-19 01:35:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:12,342 INFO L225 Difference]: With dead ends: 7145 [2023-12-19 01:35:12,343 INFO L226 Difference]: Without dead ends: 3442 [2023-12-19 01:35:12,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:35:12,350 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 801 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:12,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 640 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:35:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2023-12-19 01:35:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3213. [2023-12-19 01:35:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 2451 states have (on average 1.2872297021623826) internal successors, (3155), 2493 states have internal predecessors, (3155), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2023-12-19 01:35:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4061 transitions. [2023-12-19 01:35:12,590 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4061 transitions. Word has length 71 [2023-12-19 01:35:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:12,590 INFO L495 AbstractCegarLoop]: Abstraction has 3213 states and 4061 transitions. [2023-12-19 01:35:12,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:35:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4061 transitions. [2023-12-19 01:35:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:35:12,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:12,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:12,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:35:12,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:12,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:12,593 INFO L85 PathProgramCache]: Analyzing trace with hash 965940368, now seen corresponding path program 1 times [2023-12-19 01:35:12,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:12,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146450679] [2023-12-19 01:35:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:12,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:35:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:35:12,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:12,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146450679] [2023-12-19 01:35:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146450679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:12,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:12,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:35:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564589629] [2023-12-19 01:35:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:35:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:35:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:35:12,678 INFO L87 Difference]: Start difference. First operand 3213 states and 4061 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:35:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:13,886 INFO L93 Difference]: Finished difference Result 9511 states and 11904 transitions. [2023-12-19 01:35:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:35:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-19 01:35:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:13,925 INFO L225 Difference]: With dead ends: 9511 [2023-12-19 01:35:13,925 INFO L226 Difference]: Without dead ends: 5274 [2023-12-19 01:35:13,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-19 01:35:13,937 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 706 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:13,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1295 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:35:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-12-19 01:35:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 4954. [2023-12-19 01:35:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 3735 states have (on average 1.259437751004016) internal successors, (4704), 3820 states have internal predecessors, (4704), 585 states have call successors, (585), 482 states have call predecessors, (585), 632 states have return successors, (907), 658 states have call predecessors, (907), 582 states have call successors, (907) [2023-12-19 01:35:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 6196 transitions. [2023-12-19 01:35:14,220 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 6196 transitions. Word has length 76 [2023-12-19 01:35:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:14,236 INFO L495 AbstractCegarLoop]: Abstraction has 4954 states and 6196 transitions. [2023-12-19 01:35:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:35:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 6196 transitions. [2023-12-19 01:35:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:14,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:14,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:14,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:35:14,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:14,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash 41108918, now seen corresponding path program 1 times [2023-12-19 01:35:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:14,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081258816] [2023-12-19 01:35:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:14,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081258816] [2023-12-19 01:35:14,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081258816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:14,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:14,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478610662] [2023-12-19 01:35:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:14,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:14,344 INFO L87 Difference]: Start difference. First operand 4954 states and 6196 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:15,642 INFO L93 Difference]: Finished difference Result 5375 states and 6874 transitions. [2023-12-19 01:35:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:35:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:15,656 INFO L225 Difference]: With dead ends: 5375 [2023-12-19 01:35:15,656 INFO L226 Difference]: Without dead ends: 5216 [2023-12-19 01:35:15,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:15,658 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 828 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:15,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 730 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:35:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2023-12-19 01:35:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5115. [2023-12-19 01:35:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 3876 states have (on average 1.2719298245614035) internal successors, (4930), 3962 states have internal predecessors, (4930), 598 states have call successors, (598), 488 states have call predecessors, (598), 639 states have return successors, (923), 671 states have call predecessors, (923), 595 states have call successors, (923) [2023-12-19 01:35:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 6451 transitions. [2023-12-19 01:35:16,024 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 6451 transitions. Word has length 82 [2023-12-19 01:35:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:16,025 INFO L495 AbstractCegarLoop]: Abstraction has 5115 states and 6451 transitions. [2023-12-19 01:35:16,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 6451 transitions. [2023-12-19 01:35:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:16,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:16,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:16,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:35:16,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:16,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash -960990346, now seen corresponding path program 1 times [2023-12-19 01:35:16,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:16,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860076862] [2023-12-19 01:35:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:16,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860076862] [2023-12-19 01:35:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860076862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:16,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686060669] [2023-12-19 01:35:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:16,167 INFO L87 Difference]: Start difference. First operand 5115 states and 6451 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:17,739 INFO L93 Difference]: Finished difference Result 5750 states and 7468 transitions. [2023-12-19 01:35:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:35:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:17,755 INFO L225 Difference]: With dead ends: 5750 [2023-12-19 01:35:17,755 INFO L226 Difference]: Without dead ends: 5430 [2023-12-19 01:35:17,758 INFO L412 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 [2023-12-19 01:35:17,759 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 866 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:17,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 949 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:35:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2023-12-19 01:35:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 5265. [2023-12-19 01:35:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 4006 states have (on average 1.2815776335496756) internal successors, (5134), 4093 states have internal predecessors, (5134), 611 states have call successors, (611), 494 states have call predecessors, (611), 646 states have return successors, (938), 685 states have call predecessors, (938), 608 states have call successors, (938) [2023-12-19 01:35:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 6683 transitions. [2023-12-19 01:35:18,222 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 6683 transitions. Word has length 82 [2023-12-19 01:35:18,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:18,222 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 6683 transitions. [2023-12-19 01:35:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 6683 transitions. [2023-12-19 01:35:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:18,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:18,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:35:18,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:18,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash -7050188, now seen corresponding path program 1 times [2023-12-19 01:35:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112940894] [2023-12-19 01:35:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112940894] [2023-12-19 01:35:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112940894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335699752] [2023-12-19 01:35:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:18,329 INFO L87 Difference]: Start difference. First operand 5265 states and 6683 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:20,148 INFO L93 Difference]: Finished difference Result 6299 states and 8336 transitions. [2023-12-19 01:35:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:35:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:20,181 INFO L225 Difference]: With dead ends: 6299 [2023-12-19 01:35:20,182 INFO L226 Difference]: Without dead ends: 5829 [2023-12-19 01:35:20,187 INFO L412 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 [2023-12-19 01:35:20,188 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 835 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1254 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:35:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2023-12-19 01:35:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5566. [2023-12-19 01:35:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.2990391375673775) internal successors, (5543), 4356 states have internal predecessors, (5543), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-19 01:35:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7152 transitions. [2023-12-19 01:35:20,663 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7152 transitions. Word has length 82 [2023-12-19 01:35:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:20,663 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7152 transitions. [2023-12-19 01:35:20,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7152 transitions. [2023-12-19 01:35:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:20,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:20,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:20,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:35:20,667 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:20,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1223203914, now seen corresponding path program 1 times [2023-12-19 01:35:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176937261] [2023-12-19 01:35:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176937261] [2023-12-19 01:35:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176937261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446138446] [2023-12-19 01:35:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:20,826 INFO L87 Difference]: Start difference. First operand 5566 states and 7152 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:22,372 INFO L93 Difference]: Finished difference Result 6588 states and 8796 transitions. [2023-12-19 01:35:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:22,386 INFO L225 Difference]: With dead ends: 6588 [2023-12-19 01:35:22,386 INFO L226 Difference]: Without dead ends: 5817 [2023-12-19 01:35:22,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:22,389 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 677 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:22,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 742 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:35:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2023-12-19 01:35:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5566. [2023-12-19 01:35:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.29786735411296) internal successors, (5538), 4356 states have internal predecessors, (5538), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-19 01:35:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7147 transitions. [2023-12-19 01:35:23,062 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7147 transitions. Word has length 82 [2023-12-19 01:35:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7147 transitions. [2023-12-19 01:35:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7147 transitions. [2023-12-19 01:35:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:23,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:23,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:23,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:35:23,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:23,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:23,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1955171340, now seen corresponding path program 1 times [2023-12-19 01:35:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:23,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829961406] [2023-12-19 01:35:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:23,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829961406] [2023-12-19 01:35:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829961406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:23,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317289930] [2023-12-19 01:35:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:23,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:23,279 INFO L87 Difference]: Start difference. First operand 5566 states and 7147 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:24,514 INFO L93 Difference]: Finished difference Result 6582 states and 8770 transitions. [2023-12-19 01:35:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:24,530 INFO L225 Difference]: With dead ends: 6582 [2023-12-19 01:35:24,531 INFO L226 Difference]: Without dead ends: 5811 [2023-12-19 01:35:24,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:24,535 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 680 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:24,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 742 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:35:24,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2023-12-19 01:35:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5566. [2023-12-19 01:35:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.2966955706585424) internal successors, (5533), 4356 states have internal predecessors, (5533), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-19 01:35:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7142 transitions. [2023-12-19 01:35:25,047 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7142 transitions. Word has length 82 [2023-12-19 01:35:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:25,047 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7142 transitions. [2023-12-19 01:35:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7142 transitions. [2023-12-19 01:35:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:25,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:25,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:25,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:35:25,057 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:25,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash 653616118, now seen corresponding path program 1 times [2023-12-19 01:35:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:25,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976205006] [2023-12-19 01:35:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:25,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976205006] [2023-12-19 01:35:25,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976205006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117968038] [2023-12-19 01:35:25,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:25,168 INFO L87 Difference]: Start difference. First operand 5566 states and 7142 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:26,905 INFO L93 Difference]: Finished difference Result 7517 states and 10211 transitions. [2023-12-19 01:35:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:35:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:26,954 INFO L225 Difference]: With dead ends: 7517 [2023-12-19 01:35:26,954 INFO L226 Difference]: Without dead ends: 6746 [2023-12-19 01:35:26,974 INFO L412 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 [2023-12-19 01:35:26,975 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 935 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:26,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1243 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:35:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2023-12-19 01:35:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6134. [2023-12-19 01:35:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 4759 states have (on average 1.3210758562723262) internal successors, (6287), 4852 states have internal predecessors, (6287), 685 states have call successors, (685), 530 states have call predecessors, (685), 688 states have return successors, (1042), 765 states have call predecessors, (1042), 682 states have call successors, (1042) [2023-12-19 01:35:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8014 transitions. [2023-12-19 01:35:27,711 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8014 transitions. Word has length 82 [2023-12-19 01:35:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 6134 states and 8014 transitions. [2023-12-19 01:35:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8014 transitions. [2023-12-19 01:35:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:27,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:27,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:27,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:35:27,716 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:27,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 236219512, now seen corresponding path program 1 times [2023-12-19 01:35:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796638306] [2023-12-19 01:35:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796638306] [2023-12-19 01:35:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796638306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:27,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088520607] [2023-12-19 01:35:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:27,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:27,804 INFO L87 Difference]: Start difference. First operand 6134 states and 8014 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:28,867 INFO L93 Difference]: Finished difference Result 7848 states and 10718 transitions. [2023-12-19 01:35:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:28,886 INFO L225 Difference]: With dead ends: 7848 [2023-12-19 01:35:28,886 INFO L226 Difference]: Without dead ends: 6509 [2023-12-19 01:35:28,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:28,891 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 676 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:28,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 741 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:35:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2023-12-19 01:35:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6134. [2023-12-19 01:35:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 4759 states have (on average 1.3191847026686279) internal successors, (6278), 4852 states have internal predecessors, (6278), 685 states have call successors, (685), 530 states have call predecessors, (685), 688 states have return successors, (1042), 765 states have call predecessors, (1042), 682 states have call successors, (1042) [2023-12-19 01:35:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8005 transitions. [2023-12-19 01:35:29,598 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8005 transitions. Word has length 82 [2023-12-19 01:35:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 6134 states and 8005 transitions. [2023-12-19 01:35:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8005 transitions. [2023-12-19 01:35:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:29,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:29,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:35:29,605 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 915491766, now seen corresponding path program 1 times [2023-12-19 01:35:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686751957] [2023-12-19 01:35:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:29,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:29,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686751957] [2023-12-19 01:35:29,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686751957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:29,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:29,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:29,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422013304] [2023-12-19 01:35:29,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:29,739 INFO L87 Difference]: Start difference. First operand 6134 states and 8005 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:31,586 INFO L93 Difference]: Finished difference Result 9473 states and 13197 transitions. [2023-12-19 01:35:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:35:31,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:31,607 INFO L225 Difference]: With dead ends: 9473 [2023-12-19 01:35:31,607 INFO L226 Difference]: Without dead ends: 8134 [2023-12-19 01:35:31,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:35:31,612 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 858 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:31,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1247 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:35:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2023-12-19 01:35:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 7312. [2023-12-19 01:35:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5789 states have (on average 1.3567110036275696) internal successors, (7854), 5890 states have internal predecessors, (7854), 777 states have call successors, (777), 578 states have call predecessors, (777), 744 states have return successors, (1196), 865 states have call predecessors, (1196), 774 states have call successors, (1196) [2023-12-19 01:35:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 9827 transitions. [2023-12-19 01:35:32,144 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 9827 transitions. Word has length 82 [2023-12-19 01:35:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:32,144 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 9827 transitions. [2023-12-19 01:35:32,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 9827 transitions. [2023-12-19 01:35:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:32,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:32,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:32,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:35:32,149 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:32,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1417900872, now seen corresponding path program 1 times [2023-12-19 01:35:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133744089] [2023-12-19 01:35:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:32,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133744089] [2023-12-19 01:35:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133744089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536112079] [2023-12-19 01:35:32,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:32,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:32,237 INFO L87 Difference]: Start difference. First operand 7312 states and 9827 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:33,903 INFO L93 Difference]: Finished difference Result 13489 states and 19457 transitions. [2023-12-19 01:35:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:35:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:33,934 INFO L225 Difference]: With dead ends: 13489 [2023-12-19 01:35:33,934 INFO L226 Difference]: Without dead ends: 10972 [2023-12-19 01:35:33,941 INFO L412 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 [2023-12-19 01:35:33,941 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 862 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:33,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 905 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:35:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10972 states. [2023-12-19 01:35:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10972 to 9665. [2023-12-19 01:35:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9665 states, 7854 states have (on average 1.4025974025974026) internal successors, (11016), 7971 states have internal predecessors, (11016), 953 states have call successors, (953), 674 states have call predecessors, (953), 856 states have return successors, (1550), 1057 states have call predecessors, (1550), 950 states have call successors, (1550) [2023-12-19 01:35:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9665 states to 9665 states and 13519 transitions. [2023-12-19 01:35:34,618 INFO L78 Accepts]: Start accepts. Automaton has 9665 states and 13519 transitions. Word has length 82 [2023-12-19 01:35:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:34,619 INFO L495 AbstractCegarLoop]: Abstraction has 9665 states and 13519 transitions. [2023-12-19 01:35:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9665 states and 13519 transitions. [2023-12-19 01:35:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:34,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:34,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:34,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:35:34,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:34,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1216076938, now seen corresponding path program 1 times [2023-12-19 01:35:34,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:34,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134621352] [2023-12-19 01:35:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:34,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:34,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134621352] [2023-12-19 01:35:34,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134621352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:34,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:34,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039309337] [2023-12-19 01:35:34,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:34,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:34,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:34,700 INFO L87 Difference]: Start difference. First operand 9665 states and 13519 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:36,715 INFO L93 Difference]: Finished difference Result 22666 states and 33987 transitions. [2023-12-19 01:35:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:35:36,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:36,805 INFO L225 Difference]: With dead ends: 22666 [2023-12-19 01:35:36,805 INFO L226 Difference]: Without dead ends: 17797 [2023-12-19 01:35:36,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:35:36,849 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 935 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 916 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:35:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2023-12-19 01:35:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14528. [2023-12-19 01:35:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 12105 states have (on average 1.4489054109871953) internal successors, (17539), 12304 states have internal predecessors, (17539), 1335 states have call successors, (1335), 872 states have call predecessors, (1335), 1086 states have return successors, (2176), 1389 states have call predecessors, (2176), 1332 states have call successors, (2176) [2023-12-19 01:35:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 21050 transitions. [2023-12-19 01:35:38,226 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 21050 transitions. Word has length 82 [2023-12-19 01:35:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:38,227 INFO L495 AbstractCegarLoop]: Abstraction has 14528 states and 21050 transitions. [2023-12-19 01:35:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 21050 transitions. [2023-12-19 01:35:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 01:35:38,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:38,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:38,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:35:38,234 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -967930444, now seen corresponding path program 1 times [2023-12-19 01:35:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804511307] [2023-12-19 01:35:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804511307] [2023-12-19 01:35:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804511307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:38,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564943144] [2023-12-19 01:35:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:38,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:38,350 INFO L87 Difference]: Start difference. First operand 14528 states and 21050 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:40,949 INFO L93 Difference]: Finished difference Result 32464 states and 49384 transitions. [2023-12-19 01:35:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:35:40,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-19 01:35:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:41,038 INFO L225 Difference]: With dead ends: 32464 [2023-12-19 01:35:41,038 INFO L226 Difference]: Without dead ends: 22732 [2023-12-19 01:35:41,075 INFO L412 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 [2023-12-19 01:35:41,076 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1924 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:41,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1012 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:35:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2023-12-19 01:35:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 19170. [2023-12-19 01:35:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19170 states, 16149 states have (on average 1.4498730571552418) internal successors, (23414), 16381 states have internal predecessors, (23414), 1697 states have call successors, (1697), 1076 states have call predecessors, (1697), 1322 states have return successors, (2997), 1750 states have call predecessors, (2997), 1694 states have call successors, (2997) [2023-12-19 01:35:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 28108 transitions. [2023-12-19 01:35:42,442 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 28108 transitions. Word has length 82 [2023-12-19 01:35:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:42,442 INFO L495 AbstractCegarLoop]: Abstraction has 19170 states and 28108 transitions. [2023-12-19 01:35:42,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 28108 transitions. [2023-12-19 01:35:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:35:42,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:42,450 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-12-19 01:35:42,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:35:42,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:42,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1856308475, now seen corresponding path program 1 times [2023-12-19 01:35:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:42,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845278741] [2023-12-19 01:35:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:42,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:35:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:35:42,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845278741] [2023-12-19 01:35:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845278741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:42,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:35:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085537145] [2023-12-19 01:35:42,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:42,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:35:42,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:35:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:35:42,534 INFO L87 Difference]: Start difference. First operand 19170 states and 28108 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:35:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:44,366 INFO L93 Difference]: Finished difference Result 22841 states and 32616 transitions. [2023-12-19 01:35:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:35:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-19 01:35:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:44,428 INFO L225 Difference]: With dead ends: 22841 [2023-12-19 01:35:44,428 INFO L226 Difference]: Without dead ends: 18661 [2023-12-19 01:35:44,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:35:44,440 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1779 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:44,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 962 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:35:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18661 states. [2023-12-19 01:35:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18661 to 18327. [2023-12-19 01:35:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18327 states, 15519 states have (on average 1.4558927765964302) internal successors, (22594), 15733 states have internal predecessors, (22594), 1598 states have call successors, (1598), 991 states have call predecessors, (1598), 1208 states have return successors, (2775), 1640 states have call predecessors, (2775), 1595 states have call successors, (2775) [2023-12-19 01:35:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18327 states to 18327 states and 26967 transitions. [2023-12-19 01:35:45,770 INFO L78 Accepts]: Start accepts. Automaton has 18327 states and 26967 transitions. Word has length 86 [2023-12-19 01:35:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:45,770 INFO L495 AbstractCegarLoop]: Abstraction has 18327 states and 26967 transitions. [2023-12-19 01:35:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:35:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 18327 states and 26967 transitions. [2023-12-19 01:35:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:35:45,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:45,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:35:45,792 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1632721171, now seen corresponding path program 1 times [2023-12-19 01:35:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019279117] [2023-12-19 01:35:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:35:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 01:35:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 01:35:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 01:35:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 01:35:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 01:35:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 01:35:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 01:35:45,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:45,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019279117] [2023-12-19 01:35:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019279117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:35:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057259959] [2023-12-19 01:35:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:45,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:35:45,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:35:45,903 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) [2023-12-19 01:35:45,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:35:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:46,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 01:35:46,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:35:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:35:46,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:35:46,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057259959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:46,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:35:46,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-19 01:35:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716125255] [2023-12-19 01:35:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:35:46,053 INFO L87 Difference]: Start difference. First operand 18327 states and 26967 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:35:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:47,159 INFO L93 Difference]: Finished difference Result 20299 states and 29396 transitions. [2023-12-19 01:35:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:47,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2023-12-19 01:35:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:47,199 INFO L225 Difference]: With dead ends: 20299 [2023-12-19 01:35:47,199 INFO L226 Difference]: Without dead ends: 16383 [2023-12-19 01:35:47,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:35:47,216 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 32 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:47,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1739 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:35:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16383 states. [2023-12-19 01:35:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16383 to 16258. [2023-12-19 01:35:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16258 states, 14027 states have (on average 1.4782205746061168) internal successors, (20735), 14190 states have internal predecessors, (20735), 1322 states have call successors, (1322), 757 states have call predecessors, (1322), 907 states have return successors, (2382), 1342 states have call predecessors, (2382), 1319 states have call successors, (2382) [2023-12-19 01:35:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16258 states to 16258 states and 24439 transitions. [2023-12-19 01:35:48,245 INFO L78 Accepts]: Start accepts. Automaton has 16258 states and 24439 transitions. Word has length 131 [2023-12-19 01:35:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:48,245 INFO L495 AbstractCegarLoop]: Abstraction has 16258 states and 24439 transitions. [2023-12-19 01:35:48,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:35:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16258 states and 24439 transitions. [2023-12-19 01:35:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 01:35:48,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:48,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:48,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:35:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 01:35:48,473 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:48,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1788953059, now seen corresponding path program 1 times [2023-12-19 01:35:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657787295] [2023-12-19 01:35:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:35:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:35:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:35:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:35:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:35:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 01:35:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 01:35:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 01:35:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:35:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:35:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:35:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 01:35:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:35:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 01:35:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657787295] [2023-12-19 01:35:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657787295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:48,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:48,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:35:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176461168] [2023-12-19 01:35:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:35:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:35:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:35:48,534 INFO L87 Difference]: Start difference. First operand 16258 states and 24439 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:35:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:50,188 INFO L93 Difference]: Finished difference Result 16323 states and 24507 transitions. [2023-12-19 01:35:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-12-19 01:35:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:50,229 INFO L225 Difference]: With dead ends: 16323 [2023-12-19 01:35:50,229 INFO L226 Difference]: Without dead ends: 15921 [2023-12-19 01:35:50,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:35:50,237 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 407 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:50,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 783 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:35:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15921 states. [2023-12-19 01:35:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15921 to 15859. [2023-12-19 01:35:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15859 states, 13724 states have (on average 1.48440687846109) internal successors, (20372), 13884 states have internal predecessors, (20372), 1276 states have call successors, (1276), 717 states have call predecessors, (1276), 857 states have return successors, (2318), 1289 states have call predecessors, (2318), 1273 states have call successors, (2318) [2023-12-19 01:35:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15859 states to 15859 states and 23966 transitions. [2023-12-19 01:35:51,298 INFO L78 Accepts]: Start accepts. Automaton has 15859 states and 23966 transitions. Word has length 133 [2023-12-19 01:35:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:51,298 INFO L495 AbstractCegarLoop]: Abstraction has 15859 states and 23966 transitions. [2023-12-19 01:35:51,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:35:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 15859 states and 23966 transitions. [2023-12-19 01:35:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:35:51,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:51,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:35:51,325 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:51,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 813907870, now seen corresponding path program 1 times [2023-12-19 01:35:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221759223] [2023-12-19 01:35:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:35:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:35:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:35:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:35:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221759223] [2023-12-19 01:35:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221759223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:35:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164565136] [2023-12-19 01:35:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:51,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:35:51,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:35:51,441 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) [2023-12-19 01:35:51,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:35:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:51,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:35:51,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:35:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:35:51,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:35:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164565136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:35:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:35:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018136044] [2023-12-19 01:35:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:35:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:35:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:51,599 INFO L87 Difference]: Start difference. First operand 15859 states and 23966 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:53,218 INFO L93 Difference]: Finished difference Result 44302 states and 68507 transitions. [2023-12-19 01:35:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:35:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-19 01:35:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:53,301 INFO L225 Difference]: With dead ends: 44302 [2023-12-19 01:35:53,302 INFO L226 Difference]: Without dead ends: 29928 [2023-12-19 01:35:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:53,336 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 330 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:53,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 566 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:35:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29928 states. [2023-12-19 01:35:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29928 to 29824. [2023-12-19 01:35:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29824 states, 25919 states have (on average 1.4908754195763725) internal successors, (38642), 26226 states have internal predecessors, (38642), 2350 states have call successors, (2350), 1317 states have call predecessors, (2350), 1553 states have return successors, (4312), 2312 states have call predecessors, (4312), 2347 states have call successors, (4312) [2023-12-19 01:35:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29824 states to 29824 states and 45304 transitions. [2023-12-19 01:35:55,003 INFO L78 Accepts]: Start accepts. Automaton has 29824 states and 45304 transitions. Word has length 132 [2023-12-19 01:35:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:55,003 INFO L495 AbstractCegarLoop]: Abstraction has 29824 states and 45304 transitions. [2023-12-19 01:35:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 29824 states and 45304 transitions. [2023-12-19 01:35:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:35:55,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:55,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:55,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:35:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:35:55,250 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:55,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910270, now seen corresponding path program 1 times [2023-12-19 01:35:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099913084] [2023-12-19 01:35:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:35:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:35:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:35:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:35:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:35:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:35:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:35:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 01:35:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099913084] [2023-12-19 01:35:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099913084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:35:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056991397] [2023-12-19 01:35:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:55,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:35:55,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:35:55,353 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) [2023-12-19 01:35:55,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:35:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:55,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:35:55,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:35:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 01:35:55,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:35:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056991397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:35:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:35:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731050028] [2023-12-19 01:35:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:55,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:35:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:35:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:55,585 INFO L87 Difference]: Start difference. First operand 29824 states and 45304 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:35:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:58,961 INFO L93 Difference]: Finished difference Result 85665 states and 132173 transitions. [2023-12-19 01:35:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:35:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-19 01:35:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:59,252 INFO L225 Difference]: With dead ends: 85665 [2023-12-19 01:35:59,252 INFO L226 Difference]: Without dead ends: 57326 [2023-12-19 01:35:59,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:59,308 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 325 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:59,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 566 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:35:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57326 states. [2023-12-19 01:36:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57326 to 57122. [2023-12-19 01:36:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57122 states, 49849 states have (on average 1.49294870508937) internal successors, (74422), 50450 states have internal predecessors, (74422), 4338 states have call successors, (4338), 2505 states have call predecessors, (4338), 2933 states have return successors, (8065), 4198 states have call predecessors, (8065), 4335 states have call successors, (8065) [2023-12-19 01:36:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57122 states to 57122 states and 86825 transitions. [2023-12-19 01:36:03,066 INFO L78 Accepts]: Start accepts. Automaton has 57122 states and 86825 transitions. Word has length 132 [2023-12-19 01:36:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:36:03,066 INFO L495 AbstractCegarLoop]: Abstraction has 57122 states and 86825 transitions. [2023-12-19 01:36:03,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:36:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 57122 states and 86825 transitions. [2023-12-19 01:36:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:36:03,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:36:03,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:36:03,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:36:03,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 01:36:03,346 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:36:03,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:36:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash 553579422, now seen corresponding path program 1 times [2023-12-19 01:36:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:36:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582705555] [2023-12-19 01:36:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:36:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:36:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:36:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:36:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:36:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:36:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:36:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:36:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:36:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 01:36:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:36:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582705555] [2023-12-19 01:36:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582705555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:36:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780012649] [2023-12-19 01:36:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:36:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:36:03,423 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) [2023-12-19 01:36:03,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:36:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:03,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:36:03,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:36:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:36:03,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:36:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780012649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:36:03,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:36:03,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:36:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968444134] [2023-12-19 01:36:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:36:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:36:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:36:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:36:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:36:03,561 INFO L87 Difference]: Start difference. First operand 57122 states and 86825 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 01:36:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:36:10,127 INFO L93 Difference]: Finished difference Result 165986 states and 256275 transitions. [2023-12-19 01:36:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:36:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 132 [2023-12-19 01:36:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:36:10,565 INFO L225 Difference]: With dead ends: 165986 [2023-12-19 01:36:10,565 INFO L226 Difference]: Without dead ends: 110350 [2023-12-19 01:36:10,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:36:10,679 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 218 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:36:10,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 908 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:36:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110350 states. [2023-12-19 01:36:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110350 to 110350. [2023-12-19 01:36:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110350 states, 96422 states have (on average 1.486704279106428) internal successors, (143351), 97408 states have internal predecessors, (143351), 8233 states have call successors, (8233), 4869 states have call predecessors, (8233), 5693 states have return successors, (17708), 8136 states have call predecessors, (17708), 8230 states have call successors, (17708) [2023-12-19 01:36:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110350 states to 110350 states and 169292 transitions. [2023-12-19 01:36:17,334 INFO L78 Accepts]: Start accepts. Automaton has 110350 states and 169292 transitions. Word has length 132 [2023-12-19 01:36:17,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:36:17,335 INFO L495 AbstractCegarLoop]: Abstraction has 110350 states and 169292 transitions. [2023-12-19 01:36:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 01:36:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 110350 states and 169292 transitions. [2023-12-19 01:36:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:36:17,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:36:17,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:36:17,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 01:36:17,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:36:17,679 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:36:17,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:36:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1725829684, now seen corresponding path program 1 times [2023-12-19 01:36:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:36:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890475904] [2023-12-19 01:36:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:36:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:36:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:36:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:36:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:36:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:36:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:36:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:36:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 01:36:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:36:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 01:36:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:36:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 01:36:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-19 01:36:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:36:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890475904] [2023-12-19 01:36:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890475904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:36:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:36:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:36:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147496949] [2023-12-19 01:36:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:36:17,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:36:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:36:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:36:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:36:17,797 INFO L87 Difference]: Start difference. First operand 110350 states and 169292 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 01:36:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:36:23,323 INFO L93 Difference]: Finished difference Result 111697 states and 170961 transitions. [2023-12-19 01:36:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:36:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2023-12-19 01:36:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:36:23,713 INFO L225 Difference]: With dead ends: 111697 [2023-12-19 01:36:23,713 INFO L226 Difference]: Without dead ends: 110457 [2023-12-19 01:36:23,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:36:23,749 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 338 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:36:23,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1099 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:36:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110457 states. [2023-12-19 01:36:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110457 to 110275. [2023-12-19 01:36:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110275 states, 96369 states have (on average 1.4868059230665462) internal successors, (143282), 97356 states have internal predecessors, (143282), 8224 states have call successors, (8224), 4864 states have call predecessors, (8224), 5680 states have return successors, (17692), 8118 states have call predecessors, (17692), 8221 states have call successors, (17692) [2023-12-19 01:36:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110275 states to 110275 states and 169198 transitions. [2023-12-19 01:36:29,983 INFO L78 Accepts]: Start accepts. Automaton has 110275 states and 169198 transitions. Word has length 145 [2023-12-19 01:36:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:36:29,983 INFO L495 AbstractCegarLoop]: Abstraction has 110275 states and 169198 transitions. [2023-12-19 01:36:29,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 01:36:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 110275 states and 169198 transitions. [2023-12-19 01:36:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:36:30,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:36:30,122 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:36:30,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:36:30,122 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:36:30,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:36:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1853146411, now seen corresponding path program 1 times [2023-12-19 01:36:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:36:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039651696] [2023-12-19 01:36:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:36:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:36:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:36:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:36:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:36:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:36:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:36:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:36:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 01:36:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 01:36:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:36:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:36:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 01:36:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-19 01:36:30,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:36:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039651696] [2023-12-19 01:36:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039651696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:36:30,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:36:30,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:36:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282526708] [2023-12-19 01:36:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:36:30,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:36:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:36:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:36:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:36:30,197 INFO L87 Difference]: Start difference. First operand 110275 states and 169198 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 01:36:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:36:35,715 INFO L93 Difference]: Finished difference Result 111691 states and 170919 transitions. [2023-12-19 01:36:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:36:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 147 [2023-12-19 01:36:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:36:36,194 INFO L225 Difference]: With dead ends: 111691 [2023-12-19 01:36:36,194 INFO L226 Difference]: Without dead ends: 110388 [2023-12-19 01:36:36,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:36:36,228 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 708 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:36:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 720 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:36:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110388 states. [2023-12-19 01:36:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110388 to 110281. [2023-12-19 01:36:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110281 states, 96373 states have (on average 1.4867857179915536) internal successors, (143286), 97360 states have internal predecessors, (143286), 8225 states have call successors, (8225), 4865 states have call predecessors, (8225), 5681 states have return successors, (17694), 8119 states have call predecessors, (17694), 8222 states have call successors, (17694) [2023-12-19 01:36:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110281 states to 110281 states and 169205 transitions. [2023-12-19 01:36:42,536 INFO L78 Accepts]: Start accepts. Automaton has 110281 states and 169205 transitions. Word has length 147 [2023-12-19 01:36:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:36:42,537 INFO L495 AbstractCegarLoop]: Abstraction has 110281 states and 169205 transitions. [2023-12-19 01:36:42,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 01:36:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 110281 states and 169205 transitions. [2023-12-19 01:36:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:36:42,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:36:42,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:36:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 01:36:42,703 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:36:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:36:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1881121107, now seen corresponding path program 1 times [2023-12-19 01:36:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:36:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350983604] [2023-12-19 01:36:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:36:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:36:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:36:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:36:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:36:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:36:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:36:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:36:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 01:36:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 01:36:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:36:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:36:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 01:36:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 01:36:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:36:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350983604] [2023-12-19 01:36:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350983604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:36:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36692781] [2023-12-19 01:36:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:36:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:36:42,909 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) [2023-12-19 01:36:42,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:36:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:43,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 01:36:43,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:36:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:36:43,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:36:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 01:36:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36692781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:36:43,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:36:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-19 01:36:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431583995] [2023-12-19 01:36:43,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:36:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 01:36:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:36:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 01:36:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:36:43,304 INFO L87 Difference]: Start difference. First operand 110281 states and 169205 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:36:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:36:49,125 INFO L93 Difference]: Finished difference Result 112088 states and 171495 transitions. [2023-12-19 01:36:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 01:36:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2023-12-19 01:36:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:36:49,535 INFO L225 Difference]: With dead ends: 112088 [2023-12-19 01:36:49,535 INFO L226 Difference]: Without dead ends: 110780 [2023-12-19 01:36:49,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:36:49,575 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1227 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:36:49,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1256 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:36:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110780 states. [2023-12-19 01:36:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110780 to 110642. [2023-12-19 01:36:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110642 states, 96622 states have (on average 1.4857796361077187) internal successors, (143559), 97617 states have internal predecessors, (143559), 8279 states have call successors, (8279), 4915 states have call predecessors, (8279), 5739 states have return successors, (17808), 8173 states have call predecessors, (17808), 8276 states have call successors, (17808) [2023-12-19 01:36:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110642 states to 110642 states and 169646 transitions. [2023-12-19 01:36:56,313 INFO L78 Accepts]: Start accepts. Automaton has 110642 states and 169646 transitions. Word has length 147 [2023-12-19 01:36:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:36:56,314 INFO L495 AbstractCegarLoop]: Abstraction has 110642 states and 169646 transitions. [2023-12-19 01:36:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:36:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 110642 states and 169646 transitions. [2023-12-19 01:36:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:36:56,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:36:56,480 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:36:56,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:36:56,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:36:56,687 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:36:56,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:36:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash 441276111, now seen corresponding path program 1 times [2023-12-19 01:36:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:36:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464612508] [2023-12-19 01:36:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:36:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:36:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:36:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:36:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 01:36:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 01:36:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:36:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:36:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 01:36:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 01:36:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:36:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:36:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:36:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 01:36:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 01:36:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 01:36:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-19 01:36:56,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:36:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464612508] [2023-12-19 01:36:56,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464612508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:36:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748162565] [2023-12-19 01:36:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:36:56,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:36:56,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:36:56,786 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) [2023-12-19 01:36:56,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:36:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:36:56,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:36:56,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:36:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-19 01:36:56,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:36:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748162565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:36:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:36:56,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-19 01:36:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241022364] [2023-12-19 01:36:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:36:56,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:36:56,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:36:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:36:56,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:36:56,938 INFO L87 Difference]: Start difference. First operand 110642 states and 169646 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 01:37:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:02,856 INFO L93 Difference]: Finished difference Result 112316 states and 171698 transitions. [2023-12-19 01:37:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 162 [2023-12-19 01:37:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:03,365 INFO L225 Difference]: With dead ends: 112316 [2023-12-19 01:37:03,365 INFO L226 Difference]: Without dead ends: 110376 [2023-12-19 01:37:03,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:37:03,408 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 484 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:03,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 555 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:37:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110376 states. [2023-12-19 01:37:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110376 to 110338. [2023-12-19 01:37:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110338 states, 96395 states have (on average 1.486342652627211) internal successors, (143276), 97383 states have internal predecessors, (143276), 8244 states have call successors, (8244), 4884 states have call predecessors, (8244), 5697 states have return successors, (17734), 8134 states have call predecessors, (17734), 8241 states have call successors, (17734) [2023-12-19 01:37:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110338 states to 110338 states and 169254 transitions. [2023-12-19 01:37:10,176 INFO L78 Accepts]: Start accepts. Automaton has 110338 states and 169254 transitions. Word has length 162 [2023-12-19 01:37:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:10,176 INFO L495 AbstractCegarLoop]: Abstraction has 110338 states and 169254 transitions. [2023-12-19 01:37:10,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 01:37:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 110338 states and 169254 transitions. [2023-12-19 01:37:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 01:37:10,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:10,642 INFO L195 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:10,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:37:10,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:10,849 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:10,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 416440725, now seen corresponding path program 1 times [2023-12-19 01:37:10,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:10,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74028717] [2023-12-19 01:37:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:37:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:37:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:37:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:37:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:37:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:37:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:37:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-19 01:37:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-19 01:37:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74028717] [2023-12-19 01:37:10,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74028717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900265833] [2023-12-19 01:37:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:10,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:10,956 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) [2023-12-19 01:37:10,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:37:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:11,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:37:11,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 01:37:11,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:37:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900265833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:11,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:37:11,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:37:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091949677] [2023-12-19 01:37:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:37:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:37:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:11,211 INFO L87 Difference]: Start difference. First operand 110338 states and 169254 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-19 01:37:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:18,607 INFO L93 Difference]: Finished difference Result 204350 states and 317000 transitions. [2023-12-19 01:37:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:37:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 170 [2023-12-19 01:37:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:19,223 INFO L225 Difference]: With dead ends: 204350 [2023-12-19 01:37:19,223 INFO L226 Difference]: Without dead ends: 147834 [2023-12-19 01:37:19,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:19,358 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 277 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:19,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 567 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:37:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147834 states. [2023-12-19 01:37:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147834 to 147158. [2023-12-19 01:37:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147158 states, 128695 states have (on average 1.4887602470958468) internal successors, (191596), 130007 states have internal predecessors, (191596), 10900 states have call successors, (10900), 6492 states have call predecessors, (10900), 7561 states have return successors, (22862), 10722 states have call predecessors, (22862), 10897 states have call successors, (22862) [2023-12-19 01:37:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147158 states to 147158 states and 225358 transitions. [2023-12-19 01:37:28,219 INFO L78 Accepts]: Start accepts. Automaton has 147158 states and 225358 transitions. Word has length 170 [2023-12-19 01:37:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:28,220 INFO L495 AbstractCegarLoop]: Abstraction has 147158 states and 225358 transitions. [2023-12-19 01:37:28,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-19 01:37:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 147158 states and 225358 transitions. [2023-12-19 01:37:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 01:37:28,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:28,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:28,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:37:28,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 01:37:28,640 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:28,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash -858661964, now seen corresponding path program 1 times [2023-12-19 01:37:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039163031] [2023-12-19 01:37:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:37:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:37:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:37:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:37:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:37:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:37:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:37:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-19 01:37:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 01:37:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039163031] [2023-12-19 01:37:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039163031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317992254] [2023-12-19 01:37:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:28,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:28,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:28,799 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) [2023-12-19 01:37:28,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:37:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:28,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:37:28,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:37:29,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:37:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317992254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:29,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:37:29,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:37:29,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549693951] [2023-12-19 01:37:29,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:37:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:37:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:29,058 INFO L87 Difference]: Start difference. First operand 147158 states and 225358 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:37:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:44,181 INFO L93 Difference]: Finished difference Result 432902 states and 671418 transitions. [2023-12-19 01:37:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:37:44,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-12-19 01:37:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:45,457 INFO L225 Difference]: With dead ends: 432902 [2023-12-19 01:37:45,458 INFO L226 Difference]: Without dead ends: 287224 [2023-12-19 01:37:45,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:45,903 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 280 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:45,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 566 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:37:46,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287224 states. [2023-12-19 01:38:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287224 to 286148. [2023-12-19 01:38:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286148 states, 250252 states have (on average 1.4846514713169126) internal successors, (371537), 252860 states have internal predecessors, (371537), 21000 states have call successors, (21000), 12776 states have call predecessors, (21000), 14894 states have return successors, (43954), 20575 states have call predecessors, (43954), 20997 states have call successors, (43954) [2023-12-19 01:38:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286148 states to 286148 states and 436491 transitions. [2023-12-19 01:38:02,942 INFO L78 Accepts]: Start accepts. Automaton has 286148 states and 436491 transitions. Word has length 170 [2023-12-19 01:38:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:02,943 INFO L495 AbstractCegarLoop]: Abstraction has 286148 states and 436491 transitions. [2023-12-19 01:38:02,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:38:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 286148 states and 436491 transitions. [2023-12-19 01:38:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-19 01:38:03,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:03,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:03,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:38:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 01:38:04,126 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:04,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1731198690, now seen corresponding path program 1 times [2023-12-19 01:38:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547383036] [2023-12-19 01:38:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:38:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:38:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:38:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:38:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 01:38:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:38:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:38:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 01:38:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:38:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-19 01:38:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-19 01:38:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:04,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547383036] [2023-12-19 01:38:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547383036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:38:04,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077609558] [2023-12-19 01:38:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:04,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:04,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:04,261 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) [2023-12-19 01:38:04,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:38:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:38:04,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 01:38:04,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:38:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077609558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:38:04,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:38:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321022110] [2023-12-19 01:38:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:04,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:38:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:38:04,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:04,489 INFO L87 Difference]: Start difference. First operand 286148 states and 436491 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-12-19 01:38:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:22,000 INFO L93 Difference]: Finished difference Result 605640 states and 934085 transitions. [2023-12-19 01:38:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:38:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 188 [2023-12-19 01:38:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:23,623 INFO L225 Difference]: With dead ends: 605640 [2023-12-19 01:38:23,624 INFO L226 Difference]: Without dead ends: 320970 [2023-12-19 01:38:24,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:24,318 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 305 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:24,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 390 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:38:24,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320970 states. [2023-12-19 01:38:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320970 to 320970. [2023-12-19 01:38:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320970 states, 282261 states have (on average 1.4354728425110093) internal successors, (405178), 284869 states have internal predecessors, (405178), 21852 states have call successors, (21852), 14700 states have call predecessors, (21852), 16855 states have return successors, (45826), 21464 states have call predecessors, (45826), 21849 states have call successors, (45826) [2023-12-19 01:38:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320970 states to 320970 states and 472856 transitions. [2023-12-19 01:38:43,695 INFO L78 Accepts]: Start accepts. Automaton has 320970 states and 472856 transitions. Word has length 188 [2023-12-19 01:38:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:43,695 INFO L495 AbstractCegarLoop]: Abstraction has 320970 states and 472856 transitions. [2023-12-19 01:38:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-12-19 01:38:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 320970 states and 472856 transitions. [2023-12-19 01:38:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-19 01:38:45,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:45,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:45,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 01:38:45,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 01:38:45,302 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:45,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:45,302 INFO L85 PathProgramCache]: Analyzing trace with hash -978091837, now seen corresponding path program 1 times [2023-12-19 01:38:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:45,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42936634] [2023-12-19 01:38:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:38:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:38:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:38:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:38:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 01:38:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:38:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:38:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 01:38:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:38:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-19 01:38:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 01:38:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42936634] [2023-12-19 01:38:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42936634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:38:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809679920] [2023-12-19 01:38:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:45,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:45,525 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) [2023-12-19 01:38:45,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 01:38:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:38:45,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 01:38:45,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:38:45,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809679920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:45,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:38:45,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:38:45,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274671458] [2023-12-19 01:38:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:38:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:38:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:45,878 INFO L87 Difference]: Start difference. First operand 320970 states and 472856 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 01:39:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:02,904 INFO L93 Difference]: Finished difference Result 545100 states and 819986 transitions. [2023-12-19 01:39:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:39:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 188 [2023-12-19 01:39:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:04,509 INFO L225 Difference]: With dead ends: 545100 [2023-12-19 01:39:04,510 INFO L226 Difference]: Without dead ends: 290684 [2023-12-19 01:39:05,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:05,181 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 323 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 412 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:39:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290684 states. [2023-12-19 01:39:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290684 to 287622. [2023-12-19 01:39:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287622 states, 253581 states have (on average 1.4239631518134246) internal successors, (361090), 255565 states have internal predecessors, (361090), 19084 states have call successors, (19084), 13308 states have call predecessors, (19084), 14955 states have return successors, (40738), 18780 states have call predecessors, (40738), 19081 states have call successors, (40738) [2023-12-19 01:39:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287622 states to 287622 states and 420912 transitions. [2023-12-19 01:39:24,696 INFO L78 Accepts]: Start accepts. Automaton has 287622 states and 420912 transitions. Word has length 188 [2023-12-19 01:39:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:24,697 INFO L495 AbstractCegarLoop]: Abstraction has 287622 states and 420912 transitions. [2023-12-19 01:39:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 01:39:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 287622 states and 420912 transitions. [2023-12-19 01:39:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-19 01:39:25,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:25,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:39:25,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 01:39:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 01:39:25,422 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:25,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -812796445, now seen corresponding path program 1 times [2023-12-19 01:39:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:25,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122131394] [2023-12-19 01:39:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:39:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:39:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:39:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:39:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 01:39:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:39:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:39:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 01:39:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:39:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-19 01:39:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 01:39:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122131394] [2023-12-19 01:39:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122131394] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:39:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994083267] [2023-12-19 01:39:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:25,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:39:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:39:25,509 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) [2023-12-19 01:39:25,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 01:39:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:39:25,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:39:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 01:39:25,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:39:25,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994083267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:39:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:39:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041663175] [2023-12-19 01:39:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:39:25,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:39:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:25,991 INFO L87 Difference]: Start difference. First operand 287622 states and 420912 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 01:39:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:44,135 INFO L93 Difference]: Finished difference Result 543083 states and 793648 transitions. [2023-12-19 01:39:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:39:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 188 [2023-12-19 01:39:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:45,716 INFO L225 Difference]: With dead ends: 543083 [2023-12-19 01:39:45,717 INFO L226 Difference]: Without dead ends: 305742 [2023-12-19 01:39:46,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:46,215 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 297 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:46,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 626 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:39:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305742 states. [2023-12-19 01:40:05,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305742 to 305136. [2023-12-19 01:40:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305136 states, 269658 states have (on average 1.4002440127865667) internal successors, (377587), 271642 states have internal predecessors, (377587), 19420 states have call successors, (19420), 14292 states have call predecessors, (19420), 16056 states have return successors, (43250), 19233 states have call predecessors, (43250), 19417 states have call successors, (43250) [2023-12-19 01:40:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305136 states to 305136 states and 440257 transitions. [2023-12-19 01:40:07,892 INFO L78 Accepts]: Start accepts. Automaton has 305136 states and 440257 transitions. Word has length 188 [2023-12-19 01:40:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:40:07,893 INFO L495 AbstractCegarLoop]: Abstraction has 305136 states and 440257 transitions. [2023-12-19 01:40:07,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 01:40:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 305136 states and 440257 transitions. [2023-12-19 01:40:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 01:40:08,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:40:08,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:40:08,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 01:40:08,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 01:40:08,664 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:40:08,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:40:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 232537594, now seen corresponding path program 1 times [2023-12-19 01:40:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:40:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418910113] [2023-12-19 01:40:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:40:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:40:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:40:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:40:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:40:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:40:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:40:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:40:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:40:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 01:40:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 01:40:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:40:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-19 01:40:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 01:40:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:40:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418910113] [2023-12-19 01:40:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418910113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:40:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669819558] [2023-12-19 01:40:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:40:09,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:40:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:40:09,357 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) [2023-12-19 01:40:09,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 01:40:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:09,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:40:09,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:40:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:40:09,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:40:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669819558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:40:09,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:40:09,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:40:09,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087750511] [2023-12-19 01:40:09,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:40:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:40:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:40:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:40:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:40:09,534 INFO L87 Difference]: Start difference. First operand 305136 states and 440257 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 01:40:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:40:42,809 INFO L93 Difference]: Finished difference Result 874848 states and 1287001 transitions. [2023-12-19 01:40:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:40:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 189 [2023-12-19 01:40:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:40:47,182 INFO L225 Difference]: With dead ends: 874848 [2023-12-19 01:40:47,182 INFO L226 Difference]: Without dead ends: 571194 [2023-12-19 01:40:48,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:40:48,320 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 214 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:40:48,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 905 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:40:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571194 states.