/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:51:52,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:51:52,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:51:52,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:51:52,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:51:52,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:51:52,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:51:52,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:51:52,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:51:52,276 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:51:52,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:51:52,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:51:52,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:51:52,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:51:52,278 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:51:52,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:51:52,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:51:52,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:51:52,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:51:52,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:51:52,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:51:52,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:51:52,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:51:52,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:51:52,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:51:52,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:51:52,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:51:52,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:51:52,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:51:52,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:51:52,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:51:52,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:51:52,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:51:52,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:51:52,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:51:52,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:51:52,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:51:52,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:51:52,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:51:52,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:51:52,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:51:52,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:51:52,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:51:52,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:51:52,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:51:52,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:51:52,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:51:52,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:51:52,545 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:51:52,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2023-12-20 14:51:53,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:51:54,060 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:51:54,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2023-12-20 14:51:54,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f580d5635/99183cf57f7041ddb2c8bc5bf62f610b/FLAG46c39d7fd [2023-12-20 14:51:54,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f580d5635/99183cf57f7041ddb2c8bc5bf62f610b [2023-12-20 14:51:54,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:51:54,089 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:51:54,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:51:54,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:51:54,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:51:54,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488a01bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54, skipping insertion in model container [2023-12-20 14:51:54,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,147 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:51:54,278 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_3.cil+token_ring.02.cil-1.c[911,924] [2023-12-20 14:51:54,329 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_3.cil+token_ring.02.cil-1.c[8416,8429] [2023-12-20 14:51:54,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:51:54,378 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:51:54,390 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_3.cil+token_ring.02.cil-1.c[911,924] [2023-12-20 14:51:54,405 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_3.cil+token_ring.02.cil-1.c[8416,8429] [2023-12-20 14:51:54,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:51:54,440 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:51:54,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54 WrapperNode [2023-12-20 14:51:54,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:51:54,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:51:54,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:51:54,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:51:54,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,489 INFO L138 Inliner]: procedures = 59, calls = 67, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 506 [2023-12-20 14:51:54,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:51:54,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:51:54,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:51:54,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:51:54,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,525 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]. [2023-12-20 14:51:54,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:51:54,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:51:54,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:51:54,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:51:54,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (1/1) ... [2023-12-20 14:51:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:51:54,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:51:54,680 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) [2023-12-20 14:51:54,703 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 [2023-12-20 14:51:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:51:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:51:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:51:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:51:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:51:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:51:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:51:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:51:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:51:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:51:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:51:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:51:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:51:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:51:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:51:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:51:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:51:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:51:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:51:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:51:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:51:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:51:54,807 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:51:54,809 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:51:55,269 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-20 14:51:55,269 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-20 14:51:55,305 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:51:55,364 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:51:55,364 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-20 14:51:55,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:51:55 BoogieIcfgContainer [2023-12-20 14:51:55,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:51:55,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:51:55,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:51:55,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:51:55,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:51:54" (1/3) ... [2023-12-20 14:51:55,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d074b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:51:55, skipping insertion in model container [2023-12-20 14:51:55,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:51:54" (2/3) ... [2023-12-20 14:51:55,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d074b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:51:55, skipping insertion in model container [2023-12-20 14:51:55,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:51:55" (3/3) ... [2023-12-20 14:51:55,372 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.02.cil-1.c [2023-12-20 14:51:55,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:51:55,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:51:55,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:51:55,425 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;@2df1b7d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:51:55,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:51:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 173 states have (on average 1.6416184971098267) internal successors, (284), 179 states have internal predecessors, (284), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 14:51:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:51:55,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:51:55,439 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] [2023-12-20 14:51:55,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:51:55,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:51:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1924252270, now seen corresponding path program 1 times [2023-12-20 14:51:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:51:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425129748] [2023-12-20 14:51:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:51:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:51:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:51:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:51:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:51:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:51:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:51:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:51:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:51:55,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:51:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425129748] [2023-12-20 14:51:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425129748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:51:55,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:51:55,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:51:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474447753] [2023-12-20 14:51:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:51:55,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:51:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:51:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:51:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:51:55,918 INFO L87 Difference]: Start difference. First operand has 222 states, 173 states have (on average 1.6416184971098267) internal successors, (284), 179 states have internal predecessors, (284), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-20 14:51:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:51:56,921 INFO L93 Difference]: Finished difference Result 567 states and 893 transitions. [2023-12-20 14:51:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:51:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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 57 [2023-12-20 14:51:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:51:56,933 INFO L225 Difference]: With dead ends: 567 [2023-12-20 14:51:56,933 INFO L226 Difference]: Without dead ends: 355 [2023-12-20 14:51:56,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:51:56,939 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 482 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:51:56,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 833 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:51:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-20 14:51:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 318. [2023-12-20 14:51:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 249 states have (on average 1.5060240963855422) internal successors, (375), 255 states have internal predecessors, (375), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2023-12-20 14:51:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 468 transitions. [2023-12-20 14:51:57,001 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 468 transitions. Word has length 57 [2023-12-20 14:51:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:51:57,002 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 468 transitions. [2023-12-20 14:51:57,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-20 14:51:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 468 transitions. [2023-12-20 14:51:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:51:57,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:51:57,006 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] [2023-12-20 14:51:57,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:51:57,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:51:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:51:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 426722258, now seen corresponding path program 1 times [2023-12-20 14:51:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:51:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372587978] [2023-12-20 14:51:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:51:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:51:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:51:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:51:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:51:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:51:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:51:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:51:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:51:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:51:57,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372587978] [2023-12-20 14:51:57,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372587978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:51:57,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:51:57,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:51:57,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604403189] [2023-12-20 14:51:57,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:51:57,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:51:57,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:51:57,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:51:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:51:57,143 INFO L87 Difference]: Start difference. First operand 318 states and 468 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:51:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:51:57,778 INFO L93 Difference]: Finished difference Result 740 states and 1074 transitions. [2023-12-20 14:51:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:51:57,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-12-20 14:51:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:51:57,783 INFO L225 Difference]: With dead ends: 740 [2023-12-20 14:51:57,783 INFO L226 Difference]: Without dead ends: 552 [2023-12-20 14:51:57,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:51:57,785 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 883 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:51:57,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 693 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:51:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-20 14:51:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 484. [2023-12-20 14:51:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 379 states have (on average 1.4775725593667546) internal successors, (560), 387 states have internal predecessors, (560), 65 states have call successors, (65), 35 states have call predecessors, (65), 38 states have return successors, (71), 64 states have call predecessors, (71), 63 states have call successors, (71) [2023-12-20 14:51:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 696 transitions. [2023-12-20 14:51:57,817 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 696 transitions. Word has length 57 [2023-12-20 14:51:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:51:57,817 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 696 transitions. [2023-12-20 14:51:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:51:57,818 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 696 transitions. [2023-12-20 14:51:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:51:57,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:51:57,819 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] [2023-12-20 14:51:57,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:51:57,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:51:57,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:51:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1208441665, now seen corresponding path program 1 times [2023-12-20 14:51:57,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:51:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217708574] [2023-12-20 14:51:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:51:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:51:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:51:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:51:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:51:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:51:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:51:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:51:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:51:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217708574] [2023-12-20 14:51:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217708574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:51:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:51:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:51:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601538487] [2023-12-20 14:51:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:51:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:51:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:51:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:51:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:51:57,938 INFO L87 Difference]: Start difference. First operand 484 states and 696 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) [2023-12-20 14:51:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:51:58,554 INFO L93 Difference]: Finished difference Result 906 states and 1297 transitions. [2023-12-20 14:51:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:51:58,555 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 [2023-12-20 14:51:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:51:58,560 INFO L225 Difference]: With dead ends: 906 [2023-12-20 14:51:58,561 INFO L226 Difference]: Without dead ends: 552 [2023-12-20 14:51:58,562 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 [2023-12-20 14:51:58,566 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 254 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:51:58,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1159 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:51:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-20 14:51:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 492. [2023-12-20 14:51:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 385 states have (on average 1.464935064935065) internal successors, (564), 393 states have internal predecessors, (564), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (73), 66 states have call predecessors, (73), 63 states have call successors, (73) [2023-12-20 14:51:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 702 transitions. [2023-12-20 14:51:58,606 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 702 transitions. Word has length 58 [2023-12-20 14:51:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:51:58,606 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 702 transitions. [2023-12-20 14:51:58,606 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) [2023-12-20 14:51:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 702 transitions. [2023-12-20 14:51:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:51:58,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:51:58,608 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] [2023-12-20 14:51:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:51:58,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:51:58,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:51:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1280828223, now seen corresponding path program 1 times [2023-12-20 14:51:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:51:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789984586] [2023-12-20 14:51:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:51:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:51:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:51:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:51:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:51:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:51:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:51:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:51:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:51:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:51:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789984586] [2023-12-20 14:51:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789984586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:51:58,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:51:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:51:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493748446] [2023-12-20 14:51:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:51:58,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:51:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:51:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:51:58,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:51:58,716 INFO L87 Difference]: Start difference. First operand 492 states and 702 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:52:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:00,200 INFO L93 Difference]: Finished difference Result 1887 states and 2721 transitions. [2023-12-20 14:52:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:52:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-20 14:52:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:00,204 INFO L225 Difference]: With dead ends: 1887 [2023-12-20 14:52:00,205 INFO L226 Difference]: Without dead ends: 746 [2023-12-20 14:52:00,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:52:00,212 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1271 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:00,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 1440 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:52:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-20 14:52:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 628. [2023-12-20 14:52:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 484 states have (on average 1.4173553719008265) internal successors, (686), 494 states have internal predecessors, (686), 85 states have call successors, (85), 49 states have call predecessors, (85), 57 states have return successors, (104), 87 states have call predecessors, (104), 83 states have call successors, (104) [2023-12-20 14:52:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 875 transitions. [2023-12-20 14:52:00,255 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 875 transitions. Word has length 58 [2023-12-20 14:52:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:00,255 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 875 transitions. [2023-12-20 14:52:00,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:52:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 875 transitions. [2023-12-20 14:52:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:52:00,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:00,257 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] [2023-12-20 14:52:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:52:00,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:00,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash 360418206, now seen corresponding path program 1 times [2023-12-20 14:52:00,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:00,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313160987] [2023-12-20 14:52:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:52:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:52:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:52:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313160987] [2023-12-20 14:52:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313160987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:52:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092363687] [2023-12-20 14:52:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:00,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:52:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:52:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:52:00,393 INFO L87 Difference]: Start difference. First operand 628 states and 875 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:52:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:00,971 INFO L93 Difference]: Finished difference Result 1474 states and 2056 transitions. [2023-12-20 14:52:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:52:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2023-12-20 14:52:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:00,973 INFO L225 Difference]: With dead ends: 1474 [2023-12-20 14:52:00,973 INFO L226 Difference]: Without dead ends: 117 [2023-12-20 14:52:00,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:52:00,979 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 851 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:00,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 833 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:52:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-20 14:52:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-20 14:52:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 95 states have internal predecessors, (143), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 14:52:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 175 transitions. [2023-12-20 14:52:00,988 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 175 transitions. Word has length 59 [2023-12-20 14:52:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:00,988 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 175 transitions. [2023-12-20 14:52:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:52:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 175 transitions. [2023-12-20 14:52:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:00,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:00,990 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] [2023-12-20 14:52:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:52:00,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:00,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 751681765, now seen corresponding path program 1 times [2023-12-20 14:52:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:00,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442373733] [2023-12-20 14:52:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:01,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:01,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442373733] [2023-12-20 14:52:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442373733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:52:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889690528] [2023-12-20 14:52:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:01,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:52:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:52:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:52:01,115 INFO L87 Difference]: Start difference. First operand 117 states and 175 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:01,525 INFO L93 Difference]: Finished difference Result 392 states and 601 transitions. [2023-12-20 14:52:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:52:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:01,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:01,526 INFO L225 Difference]: With dead ends: 392 [2023-12-20 14:52:01,527 INFO L226 Difference]: Without dead ends: 284 [2023-12-20 14:52:01,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:52:01,527 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 388 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:01,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 354 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:52:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-20 14:52:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 225. [2023-12-20 14:52:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.5271739130434783) internal successors, (281), 186 states have internal predecessors, (281), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-12-20 14:52:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 338 transitions. [2023-12-20 14:52:01,538 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 338 transitions. Word has length 61 [2023-12-20 14:52:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:01,538 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 338 transitions. [2023-12-20 14:52:01,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 338 transitions. [2023-12-20 14:52:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:01,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:01,552 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] [2023-12-20 14:52:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:52:01,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:01,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1534836827, now seen corresponding path program 1 times [2023-12-20 14:52:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858277216] [2023-12-20 14:52:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:01,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:01,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858277216] [2023-12-20 14:52:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858277216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:01,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:52:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427001931] [2023-12-20 14:52:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:52:01,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:52:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:01,663 INFO L87 Difference]: Start difference. First operand 225 states and 338 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:02,308 INFO L93 Difference]: Finished difference Result 637 states and 967 transitions. [2023-12-20 14:52:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:52:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:02,310 INFO L225 Difference]: With dead ends: 637 [2023-12-20 14:52:02,310 INFO L226 Difference]: Without dead ends: 421 [2023-12-20 14:52:02,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:52:02,311 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 395 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:02,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 650 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:52:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-20 14:52:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 326. [2023-12-20 14:52:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 270 states have internal predecessors, (405), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-20 14:52:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 486 transitions. [2023-12-20 14:52:02,325 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 486 transitions. Word has length 61 [2023-12-20 14:52:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:02,325 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 486 transitions. [2023-12-20 14:52:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 486 transitions. [2023-12-20 14:52:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:02,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:02,326 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] [2023-12-20 14:52:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:52:02,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:02,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1550355545, now seen corresponding path program 1 times [2023-12-20 14:52:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489176946] [2023-12-20 14:52:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:02,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489176946] [2023-12-20 14:52:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489176946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:02,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:52:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738628806] [2023-12-20 14:52:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:52:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:52:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:02,427 INFO L87 Difference]: Start difference. First operand 326 states and 486 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:03,198 INFO L93 Difference]: Finished difference Result 1058 states and 1599 transitions. [2023-12-20 14:52:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:52:03,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:03,201 INFO L225 Difference]: With dead ends: 1058 [2023-12-20 14:52:03,201 INFO L226 Difference]: Without dead ends: 741 [2023-12-20 14:52:03,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:52:03,202 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 407 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:03,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 641 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:52:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-20 14:52:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 528. [2023-12-20 14:52:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 435 states have (on average 1.5126436781609196) internal successors, (658), 440 states have internal predecessors, (658), 58 states have call successors, (58), 30 states have call predecessors, (58), 34 states have return successors, (71), 61 states have call predecessors, (71), 58 states have call successors, (71) [2023-12-20 14:52:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 787 transitions. [2023-12-20 14:52:03,233 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 787 transitions. Word has length 61 [2023-12-20 14:52:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:03,233 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 787 transitions. [2023-12-20 14:52:03,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 787 transitions. [2023-12-20 14:52:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:03,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:03,234 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] [2023-12-20 14:52:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:52:03,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:03,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1903443927, now seen corresponding path program 1 times [2023-12-20 14:52:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985690786] [2023-12-20 14:52:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:03,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:03,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985690786] [2023-12-20 14:52:03,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985690786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:03,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:03,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:52:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895788022] [2023-12-20 14:52:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:52:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:52:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:03,311 INFO L87 Difference]: Start difference. First operand 528 states and 787 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:04,057 INFO L93 Difference]: Finished difference Result 1762 states and 2650 transitions. [2023-12-20 14:52:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:52:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:04,062 INFO L225 Difference]: With dead ends: 1762 [2023-12-20 14:52:04,062 INFO L226 Difference]: Without dead ends: 1243 [2023-12-20 14:52:04,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:52:04,064 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 434 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:04,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 637 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:52:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-12-20 14:52:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 909. [2023-12-20 14:52:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 750 states have (on average 1.5066666666666666) internal successors, (1130), 759 states have internal predecessors, (1130), 96 states have call successors, (96), 54 states have call predecessors, (96), 62 states have return successors, (131), 103 states have call predecessors, (131), 96 states have call successors, (131) [2023-12-20 14:52:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1357 transitions. [2023-12-20 14:52:04,133 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1357 transitions. Word has length 61 [2023-12-20 14:52:04,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:04,134 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1357 transitions. [2023-12-20 14:52:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1357 transitions. [2023-12-20 14:52:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:04,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:04,139 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] [2023-12-20 14:52:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:52:04,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:04,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 24828775, now seen corresponding path program 1 times [2023-12-20 14:52:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:04,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178051726] [2023-12-20 14:52:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:04,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178051726] [2023-12-20 14:52:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178051726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:04,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:52:04,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588875512] [2023-12-20 14:52:04,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:52:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:52:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:04,221 INFO L87 Difference]: Start difference. First operand 909 states and 1357 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:05,027 INFO L93 Difference]: Finished difference Result 3035 states and 4556 transitions. [2023-12-20 14:52:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:52:05,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:05,034 INFO L225 Difference]: With dead ends: 3035 [2023-12-20 14:52:05,034 INFO L226 Difference]: Without dead ends: 2135 [2023-12-20 14:52:05,037 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 [2023-12-20 14:52:05,037 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 384 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:05,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 619 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:52:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2023-12-20 14:52:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1684. [2023-12-20 14:52:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1401 states have (on average 1.5060670949321913) internal successors, (2110), 1418 states have internal predecessors, (2110), 166 states have call successors, (166), 100 states have call predecessors, (166), 116 states have return successors, (263), 181 states have call predecessors, (263), 166 states have call successors, (263) [2023-12-20 14:52:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2539 transitions. [2023-12-20 14:52:05,109 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2539 transitions. Word has length 61 [2023-12-20 14:52:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:05,110 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2539 transitions. [2023-12-20 14:52:05,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2539 transitions. [2023-12-20 14:52:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:52:05,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:05,112 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] [2023-12-20 14:52:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:52:05,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:05,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash 918315113, now seen corresponding path program 1 times [2023-12-20 14:52:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884930719] [2023-12-20 14:52:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:52:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884930719] [2023-12-20 14:52:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884930719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:52:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344836396] [2023-12-20 14:52:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:52:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:52:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:05,207 INFO L87 Difference]: Start difference. First operand 1684 states and 2539 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:06,310 INFO L93 Difference]: Finished difference Result 7707 states and 11871 transitions. [2023-12-20 14:52:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:52:06,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-20 14:52:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:06,336 INFO L225 Difference]: With dead ends: 7707 [2023-12-20 14:52:06,336 INFO L226 Difference]: Without dead ends: 6033 [2023-12-20 14:52:06,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:52:06,343 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1035 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:06,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 518 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:52:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2023-12-20 14:52:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 4943. [2023-12-20 14:52:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4092 states have (on average 1.4850928641251222) internal successors, (6077), 4168 states have internal predecessors, (6077), 496 states have call successors, (496), 306 states have call predecessors, (496), 354 states have return successors, (840), 484 states have call predecessors, (840), 496 states have call successors, (840) [2023-12-20 14:52:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7413 transitions. [2023-12-20 14:52:06,706 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7413 transitions. Word has length 61 [2023-12-20 14:52:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:06,706 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 7413 transitions. [2023-12-20 14:52:06,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:52:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7413 transitions. [2023-12-20 14:52:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:52:06,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:06,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:52:06,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:06,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1954181422, now seen corresponding path program 1 times [2023-12-20 14:52:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665419002] [2023-12-20 14:52:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 14:52:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:52:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665419002] [2023-12-20 14:52:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665419002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447667051] [2023-12-20 14:52:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:06,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:06,820 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) [2023-12-20 14:52:06,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:52:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:06,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:06,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 14:52:06,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447667051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:06,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611274455] [2023-12-20 14:52:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:06,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:06,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:06,966 INFO L87 Difference]: Start difference. First operand 4943 states and 7413 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:52:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:07,377 INFO L93 Difference]: Finished difference Result 14513 states and 22084 transitions. [2023-12-20 14:52:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2023-12-20 14:52:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:07,415 INFO L225 Difference]: With dead ends: 14513 [2023-12-20 14:52:07,415 INFO L226 Difference]: Without dead ends: 9581 [2023-12-20 14:52:07,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:07,429 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 145 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:07,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 455 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9581 states. [2023-12-20 14:52:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9581 to 9581. [2023-12-20 14:52:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9581 states, 7939 states have (on average 1.4734853256077591) internal successors, (11698), 8064 states have internal predecessors, (11698), 943 states have call successors, (943), 600 states have call predecessors, (943), 698 states have return successors, (1803), 948 states have call predecessors, (1803), 943 states have call successors, (1803) [2023-12-20 14:52:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9581 states to 9581 states and 14444 transitions. [2023-12-20 14:52:08,058 INFO L78 Accepts]: Start accepts. Automaton has 9581 states and 14444 transitions. Word has length 99 [2023-12-20 14:52:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 9581 states and 14444 transitions. [2023-12-20 14:52:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:52:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9581 states and 14444 transitions. [2023-12-20 14:52:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 14:52:08,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:08,081 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:52:08,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:52:08,288 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,SelfDestructingSolverStorable11 [2023-12-20 14:52:08,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:08,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1921924436, now seen corresponding path program 1 times [2023-12-20 14:52:08,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:08,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833234540] [2023-12-20 14:52:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:08,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 14:52:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 14:52:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 14:52:08,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833234540] [2023-12-20 14:52:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833234540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324771660] [2023-12-20 14:52:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:08,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:08,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:08,393 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) [2023-12-20 14:52:08,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:52:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:08,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:08,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-20 14:52:08,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324771660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:08,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:52:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261086297] [2023-12-20 14:52:08,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:08,637 INFO L87 Difference]: Start difference. First operand 9581 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 14:52:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:09,201 INFO L93 Difference]: Finished difference Result 18033 states and 27484 transitions. [2023-12-20 14:52:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2023-12-20 14:52:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:09,279 INFO L225 Difference]: With dead ends: 18033 [2023-12-20 14:52:09,280 INFO L226 Difference]: Without dead ends: 12949 [2023-12-20 14:52:09,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:09,302 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 91 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:09,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 298 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12949 states. [2023-12-20 14:52:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12949 to 12859. [2023-12-20 14:52:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12859 states, 10655 states have (on average 1.4736743312998593) internal successors, (15702), 10821 states have internal predecessors, (15702), 1265 states have call successors, (1265), 808 states have call predecessors, (1265), 938 states have return successors, (2350), 1261 states have call predecessors, (2350), 1265 states have call successors, (2350) [2023-12-20 14:52:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12859 states to 12859 states and 19317 transitions. [2023-12-20 14:52:10,051 INFO L78 Accepts]: Start accepts. Automaton has 12859 states and 19317 transitions. Word has length 127 [2023-12-20 14:52:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 12859 states and 19317 transitions. [2023-12-20 14:52:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 14:52:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12859 states and 19317 transitions. [2023-12-20 14:52:10,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 14:52:10,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:10,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:52:10,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 14:52:10,289 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,SelfDestructingSolverStorable12 [2023-12-20 14:52:10,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 150453461, now seen corresponding path program 1 times [2023-12-20 14:52:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262808530] [2023-12-20 14:52:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 14:52:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 14:52:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-20 14:52:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262808530] [2023-12-20 14:52:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262808530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908001764] [2023-12-20 14:52:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:10,430 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) [2023-12-20 14:52:10,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:52:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:10,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:10,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 14:52:10,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908001764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:10,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:52:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808201701] [2023-12-20 14:52:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:10,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:10,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:10,649 INFO L87 Difference]: Start difference. First operand 12859 states and 19317 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 14:52:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:11,654 INFO L93 Difference]: Finished difference Result 38011 states and 57611 transitions. [2023-12-20 14:52:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2023-12-20 14:52:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:11,725 INFO L225 Difference]: With dead ends: 38011 [2023-12-20 14:52:11,726 INFO L226 Difference]: Without dead ends: 25167 [2023-12-20 14:52:11,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:11,760 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 95 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:11,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 301 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25167 states. [2023-12-20 14:52:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25167 to 25025. [2023-12-20 14:52:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25025 states, 20770 states have (on average 1.4655272026961965) internal successors, (30439), 21100 states have internal predecessors, (30439), 2411 states have call successors, (2411), 1580 states have call predecessors, (2411), 1843 states have return successors, (4394), 2376 states have call predecessors, (4394), 2411 states have call successors, (4394) [2023-12-20 14:52:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25025 states to 25025 states and 37244 transitions. [2023-12-20 14:52:13,142 INFO L78 Accepts]: Start accepts. Automaton has 25025 states and 37244 transitions. Word has length 127 [2023-12-20 14:52:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:13,143 INFO L495 AbstractCegarLoop]: Abstraction has 25025 states and 37244 transitions. [2023-12-20 14:52:13,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 14:52:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25025 states and 37244 transitions. [2023-12-20 14:52:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-20 14:52:13,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:13,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:13,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 14:52:13,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:13,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:13,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1421012609, now seen corresponding path program 1 times [2023-12-20 14:52:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027923275] [2023-12-20 14:52:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-20 14:52:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 14:52:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:52:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-20 14:52:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 14:52:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027923275] [2023-12-20 14:52:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027923275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492182055] [2023-12-20 14:52:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:13,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:13,560 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) [2023-12-20 14:52:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:52:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:13,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:52:13,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 14:52:13,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492182055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:13,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137010533] [2023-12-20 14:52:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:13,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:13,730 INFO L87 Difference]: Start difference. First operand 25025 states and 37244 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:52:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:15,063 INFO L93 Difference]: Finished difference Result 47799 states and 71180 transitions. [2023-12-20 14:52:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:15,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2023-12-20 14:52:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:15,191 INFO L225 Difference]: With dead ends: 47799 [2023-12-20 14:52:15,191 INFO L226 Difference]: Without dead ends: 27003 [2023-12-20 14:52:15,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:15,244 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 125 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:15,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 339 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27003 states. [2023-12-20 14:52:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27003 to 26853. [2023-12-20 14:52:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26853 states, 22395 states have (on average 1.4332663540968966) internal successors, (32098), 22725 states have internal predecessors, (32098), 2455 states have call successors, (2455), 1732 states have call predecessors, (2455), 2002 states have return successors, (4744), 2427 states have call predecessors, (4744), 2455 states have call successors, (4744) [2023-12-20 14:52:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26853 states to 26853 states and 39297 transitions. [2023-12-20 14:52:16,852 INFO L78 Accepts]: Start accepts. Automaton has 26853 states and 39297 transitions. Word has length 143 [2023-12-20 14:52:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:16,852 INFO L495 AbstractCegarLoop]: Abstraction has 26853 states and 39297 transitions. [2023-12-20 14:52:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:52:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 26853 states and 39297 transitions. [2023-12-20 14:52:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-20 14:52:16,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:16,892 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, 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] [2023-12-20 14:52:16,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:52:17,098 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,SelfDestructingSolverStorable14 [2023-12-20 14:52:17,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:17,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash -631768685, now seen corresponding path program 1 times [2023-12-20 14:52:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:17,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631765949] [2023-12-20 14:52:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:17,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 14:52:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 14:52:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 14:52:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 14:52:17,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:17,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631765949] [2023-12-20 14:52:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631765949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:17,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501745579] [2023-12-20 14:52:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:17,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:17,196 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) [2023-12-20 14:52:17,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:52:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:17,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:17,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 14:52:17,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501745579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144857567] [2023-12-20 14:52:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:17,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:17,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:17,319 INFO L87 Difference]: Start difference. First operand 26853 states and 39297 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:19,659 INFO L93 Difference]: Finished difference Result 78995 states and 117344 transitions. [2023-12-20 14:52:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:19,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2023-12-20 14:52:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:19,813 INFO L225 Difference]: With dead ends: 78995 [2023-12-20 14:52:19,813 INFO L226 Difference]: Without dead ends: 52159 [2023-12-20 14:52:19,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:19,859 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 138 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:19,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 460 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52159 states. [2023-12-20 14:52:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52159 to 52115. [2023-12-20 14:52:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52115 states, 43391 states have (on average 1.421308566292549) internal successors, (61672), 44051 states have internal predecessors, (61672), 4773 states have call successors, (4773), 3404 states have call predecessors, (4773), 3950 states have return successors, (10768), 4723 states have call predecessors, (10768), 4773 states have call successors, (10768) [2023-12-20 14:52:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52115 states to 52115 states and 77213 transitions. [2023-12-20 14:52:22,620 INFO L78 Accepts]: Start accepts. Automaton has 52115 states and 77213 transitions. Word has length 144 [2023-12-20 14:52:22,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:22,620 INFO L495 AbstractCegarLoop]: Abstraction has 52115 states and 77213 transitions. [2023-12-20 14:52:22,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 52115 states and 77213 transitions. [2023-12-20 14:52:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-20 14:52:22,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:22,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:22,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 14:52:22,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 14:52:22,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:22,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -347641467, now seen corresponding path program 1 times [2023-12-20 14:52:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79132008] [2023-12-20 14:52:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 14:52:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:52:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 14:52:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-20 14:52:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79132008] [2023-12-20 14:52:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79132008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505564735] [2023-12-20 14:52:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:23,041 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) [2023-12-20 14:52:23,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:52:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:23,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:23,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 14:52:23,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505564735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:23,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309837763] [2023-12-20 14:52:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:23,432 INFO L87 Difference]: Start difference. First operand 52115 states and 77213 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 14:52:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:25,875 INFO L93 Difference]: Finished difference Result 88339 states and 132458 transitions. [2023-12-20 14:52:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2023-12-20 14:52:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:25,999 INFO L225 Difference]: With dead ends: 88339 [2023-12-20 14:52:25,999 INFO L226 Difference]: Without dead ends: 44313 [2023-12-20 14:52:26,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:26,068 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 111 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:26,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 182 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44313 states. [2023-12-20 14:52:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44313 to 32071. [2023-12-20 14:52:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32071 states, 26741 states have (on average 1.3718260349276392) internal successors, (36684), 27089 states have internal predecessors, (36684), 2917 states have call successors, (2917), 2128 states have call predecessors, (2917), 2412 states have return successors, (6088), 2885 states have call predecessors, (6088), 2917 states have call successors, (6088) [2023-12-20 14:52:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32071 states to 32071 states and 45689 transitions. [2023-12-20 14:52:28,099 INFO L78 Accepts]: Start accepts. Automaton has 32071 states and 45689 transitions. Word has length 144 [2023-12-20 14:52:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:28,099 INFO L495 AbstractCegarLoop]: Abstraction has 32071 states and 45689 transitions. [2023-12-20 14:52:28,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-20 14:52:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 32071 states and 45689 transitions. [2023-12-20 14:52:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:52:28,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:28,138 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, 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] [2023-12-20 14:52:28,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:52:28,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 14:52:28,344 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:28,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1836703662, now seen corresponding path program 1 times [2023-12-20 14:52:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253581342] [2023-12-20 14:52:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:52:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:52:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-20 14:52:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 14:52:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 14:52:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253581342] [2023-12-20 14:52:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253581342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701797399] [2023-12-20 14:52:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:28,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:28,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:28,431 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) [2023-12-20 14:52:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:52:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:28,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:52:28,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 14:52:28,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:28,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701797399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:28,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:28,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:28,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360601709] [2023-12-20 14:52:28,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:28,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:28,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:28,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:28,630 INFO L87 Difference]: Start difference. First operand 32071 states and 45689 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:52:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:31,930 INFO L93 Difference]: Finished difference Result 94689 states and 138489 transitions. [2023-12-20 14:52:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-20 14:52:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:32,149 INFO L225 Difference]: With dead ends: 94689 [2023-12-20 14:52:32,150 INFO L226 Difference]: Without dead ends: 62643 [2023-12-20 14:52:32,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:32,209 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 132 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:32,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 324 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62643 states. [2023-12-20 14:52:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62643 to 62381. [2023-12-20 14:52:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62381 states, 51925 states have (on average 1.358613384689456) internal successors, (70546), 52621 states have internal predecessors, (70546), 5689 states have call successors, (5689), 4184 states have call predecessors, (5689), 4766 states have return successors, (15334), 5639 states have call predecessors, (15334), 5689 states have call successors, (15334) [2023-12-20 14:52:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62381 states to 62381 states and 91569 transitions. [2023-12-20 14:52:36,079 INFO L78 Accepts]: Start accepts. Automaton has 62381 states and 91569 transitions. Word has length 145 [2023-12-20 14:52:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:36,079 INFO L495 AbstractCegarLoop]: Abstraction has 62381 states and 91569 transitions. [2023-12-20 14:52:36,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:52:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 62381 states and 91569 transitions. [2023-12-20 14:52:36,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:52:36,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:36,158 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, 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] [2023-12-20 14:52:36,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 14:52:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:36,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:36,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash -433075375, now seen corresponding path program 1 times [2023-12-20 14:52:36,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:36,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197995516] [2023-12-20 14:52:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 14:52:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:52:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 14:52:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 14:52:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197995516] [2023-12-20 14:52:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197995516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811808924] [2023-12-20 14:52:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:36,439 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) [2023-12-20 14:52:36,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:52:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:36,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:36,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 14:52:36,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:36,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811808924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:36,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725957813] [2023-12-20 14:52:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:36,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:36,567 INFO L87 Difference]: Start difference. First operand 62381 states and 91569 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:39,726 INFO L93 Difference]: Finished difference Result 118533 states and 178073 transitions. [2023-12-20 14:52:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2023-12-20 14:52:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:39,917 INFO L225 Difference]: With dead ends: 118533 [2023-12-20 14:52:39,917 INFO L226 Difference]: Without dead ends: 61443 [2023-12-20 14:52:40,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:40,138 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 132 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:40,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 186 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61443 states. [2023-12-20 14:52:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61443 to 56451. [2023-12-20 14:52:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56451 states, 47013 states have (on average 1.3137855486780252) internal successors, (61765), 47585 states have internal predecessors, (61765), 5185 states have call successors, (5185), 3792 states have call predecessors, (5185), 4252 states have return successors, (12103), 5105 states have call predecessors, (12103), 5185 states have call successors, (12103) [2023-12-20 14:52:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56451 states to 56451 states and 79053 transitions. [2023-12-20 14:52:43,349 INFO L78 Accepts]: Start accepts. Automaton has 56451 states and 79053 transitions. Word has length 145 [2023-12-20 14:52:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:43,349 INFO L495 AbstractCegarLoop]: Abstraction has 56451 states and 79053 transitions. [2023-12-20 14:52:43,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 56451 states and 79053 transitions. [2023-12-20 14:52:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:52:43,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:43,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:43,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:52:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:43,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:43,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1547494798, now seen corresponding path program 1 times [2023-12-20 14:52:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:43,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893936171] [2023-12-20 14:52:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:52:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 14:52:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:52:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 14:52:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-20 14:52:43,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893936171] [2023-12-20 14:52:43,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893936171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314272162] [2023-12-20 14:52:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:43,695 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) [2023-12-20 14:52:43,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:52:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:43,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:52:43,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 14:52:43,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314272162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:43,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:43,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401417533] [2023-12-20 14:52:43,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:43,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:43,874 INFO L87 Difference]: Start difference. First operand 56451 states and 79053 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:46,960 INFO L93 Difference]: Finished difference Result 101903 states and 142153 transitions. [2023-12-20 14:52:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:46,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2023-12-20 14:52:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:47,124 INFO L225 Difference]: With dead ends: 101903 [2023-12-20 14:52:47,124 INFO L226 Difference]: Without dead ends: 58241 [2023-12-20 14:52:47,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:47,183 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 140 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:47,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 423 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58241 states. [2023-12-20 14:52:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58241 to 58239. [2023-12-20 14:52:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58239 states, 48701 states have (on average 1.3042647994907701) internal successors, (63519), 49301 states have internal predecessors, (63519), 5185 states have call successors, (5185), 3864 states have call predecessors, (5185), 4352 states have return successors, (11653), 5105 states have call predecessors, (11653), 5185 states have call successors, (11653) [2023-12-20 14:52:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58239 states to 58239 states and 80357 transitions. [2023-12-20 14:52:50,173 INFO L78 Accepts]: Start accepts. Automaton has 58239 states and 80357 transitions. Word has length 145 [2023-12-20 14:52:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:50,173 INFO L495 AbstractCegarLoop]: Abstraction has 58239 states and 80357 transitions. [2023-12-20 14:52:50,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:52:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 58239 states and 80357 transitions. [2023-12-20 14:52:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:52:50,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:50,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:50,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 14:52:50,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:50,420 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:50,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1404299474, now seen corresponding path program 1 times [2023-12-20 14:52:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82931291] [2023-12-20 14:52:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:52:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:52:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-20 14:52:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 14:52:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-20 14:52:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82931291] [2023-12-20 14:52:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82931291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:52:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:52:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463984135] [2023-12-20 14:52:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:52:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:52:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:52:50,506 INFO L87 Difference]: Start difference. First operand 58239 states and 80357 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:52:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:53,026 INFO L93 Difference]: Finished difference Result 115569 states and 158767 transitions. [2023-12-20 14:52:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:52:53,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-12-20 14:52:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:53,251 INFO L225 Difference]: With dead ends: 115569 [2023-12-20 14:52:53,251 INFO L226 Difference]: Without dead ends: 57351 [2023-12-20 14:52:53,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:52:53,352 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 276 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:53,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 206 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:52:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57351 states. [2023-12-20 14:52:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57351 to 52818. [2023-12-20 14:52:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52818 states, 44553 states have (on average 1.3078356115188652) internal successors, (58268), 45645 states have internal predecessors, (58268), 4001 states have call successors, (4001), 2988 states have call predecessors, (4001), 4263 states have return successors, (10337), 4200 states have call predecessors, (10337), 4001 states have call successors, (10337) [2023-12-20 14:52:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52818 states to 52818 states and 72606 transitions. [2023-12-20 14:52:56,164 INFO L78 Accepts]: Start accepts. Automaton has 52818 states and 72606 transitions. Word has length 145 [2023-12-20 14:52:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:52:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 52818 states and 72606 transitions. [2023-12-20 14:52:56,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:52:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 52818 states and 72606 transitions. [2023-12-20 14:52:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-20 14:52:56,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:52:56,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:52:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:52:56,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:52:56,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:52:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 158361844, now seen corresponding path program 1 times [2023-12-20 14:52:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:52:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882121160] [2023-12-20 14:52:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:52:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:52:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:52:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:52:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:52:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:52:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:52:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:52:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 14:52:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:52:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 14:52:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 14:52:56,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:52:56,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882121160] [2023-12-20 14:52:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882121160] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:52:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400855883] [2023-12-20 14:52:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:52:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:52:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:52:56,285 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) [2023-12-20 14:52:56,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 14:52:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:52:56,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:52:56,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:52:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-20 14:52:56,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:52:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400855883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:52:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:52:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:52:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484209638] [2023-12-20 14:52:56,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:52:56,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:52:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:52:56,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:52:56,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:56,456 INFO L87 Difference]: Start difference. First operand 52818 states and 72606 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:52:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:52:59,018 INFO L93 Difference]: Finished difference Result 93915 states and 129447 transitions. [2023-12-20 14:52:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:52:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2023-12-20 14:52:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:52:59,224 INFO L225 Difference]: With dead ends: 93915 [2023-12-20 14:52:59,224 INFO L226 Difference]: Without dead ends: 53468 [2023-12-20 14:52:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:52:59,291 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 128 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:52:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 305 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:52:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53468 states. [2023-12-20 14:53:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53468 to 52818. [2023-12-20 14:53:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52818 states, 44553 states have (on average 1.3017080780194374) internal successors, (57995), 45645 states have internal predecessors, (57995), 4001 states have call successors, (4001), 2988 states have call predecessors, (4001), 4263 states have return successors, (10337), 4200 states have call predecessors, (10337), 4001 states have call successors, (10337) [2023-12-20 14:53:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52818 states to 52818 states and 72333 transitions. [2023-12-20 14:53:02,730 INFO L78 Accepts]: Start accepts. Automaton has 52818 states and 72333 transitions. Word has length 146 [2023-12-20 14:53:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:02,731 INFO L495 AbstractCegarLoop]: Abstraction has 52818 states and 72333 transitions. [2023-12-20 14:53:02,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-20 14:53:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 52818 states and 72333 transitions. [2023-12-20 14:53:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-20 14:53:02,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:02,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:02,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 14:53:02,995 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,SelfDestructingSolverStorable21 [2023-12-20 14:53:02,995 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:02,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1196277840, now seen corresponding path program 1 times [2023-12-20 14:53:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826990278] [2023-12-20 14:53:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:53:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 14:53:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 14:53:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-20 14:53:03,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:03,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826990278] [2023-12-20 14:53:03,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826990278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:03,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:03,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:53:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948110092] [2023-12-20 14:53:03,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:03,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:53:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:53:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:53:03,077 INFO L87 Difference]: Start difference. First operand 52818 states and 72333 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:53:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:05,420 INFO L93 Difference]: Finished difference Result 96324 states and 131588 transitions. [2023-12-20 14:53:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:53:05,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 146 [2023-12-20 14:53:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:05,549 INFO L225 Difference]: With dead ends: 96324 [2023-12-20 14:53:05,549 INFO L226 Difference]: Without dead ends: 43521 [2023-12-20 14:53:05,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:53:05,615 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 274 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:05,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 204 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:53:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43521 states. [2023-12-20 14:53:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43521 to 39806. [2023-12-20 14:53:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 33665 states have (on average 1.3123124907173622) internal successors, (44179), 34445 states have internal predecessors, (44179), 2985 states have call successors, (2985), 2244 states have call predecessors, (2985), 3155 states have return successors, (7317), 3124 states have call predecessors, (7317), 2985 states have call successors, (7317) [2023-12-20 14:53:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 54481 transitions. [2023-12-20 14:53:07,691 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 54481 transitions. Word has length 146 [2023-12-20 14:53:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:07,691 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 54481 transitions. [2023-12-20 14:53:07,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:53:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 54481 transitions. [2023-12-20 14:53:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 14:53:07,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:07,719 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, 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] [2023-12-20 14:53:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:53:07,720 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:07,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1213259920, now seen corresponding path program 1 times [2023-12-20 14:53:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503341820] [2023-12-20 14:53:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 14:53:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 14:53:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 14:53:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503341820] [2023-12-20 14:53:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503341820] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629644606] [2023-12-20 14:53:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:07,862 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) [2023-12-20 14:53:07,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 14:53:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:07,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:53:07,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 14:53:08,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:08,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629644606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:08,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:08,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:53:08,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498877386] [2023-12-20 14:53:08,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:08,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:53:08,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:53:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:08,018 INFO L87 Difference]: Start difference. First operand 39806 states and 54481 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:53:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:09,900 INFO L93 Difference]: Finished difference Result 66895 states and 95786 transitions. [2023-12-20 14:53:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:53:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2023-12-20 14:53:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:10,019 INFO L225 Difference]: With dead ends: 66895 [2023-12-20 14:53:10,019 INFO L226 Difference]: Without dead ends: 39916 [2023-12-20 14:53:10,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:10,071 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 120 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:10,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 412 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39916 states. [2023-12-20 14:53:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39916 to 39806. [2023-12-20 14:53:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 33665 states have (on average 1.2839150452992723) internal successors, (43223), 34445 states have internal predecessors, (43223), 2985 states have call successors, (2985), 2244 states have call predecessors, (2985), 3155 states have return successors, (7317), 3124 states have call predecessors, (7317), 2985 states have call successors, (7317) [2023-12-20 14:53:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 53525 transitions. [2023-12-20 14:53:11,978 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 53525 transitions. Word has length 149 [2023-12-20 14:53:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:11,978 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 53525 transitions. [2023-12-20 14:53:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:53:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 53525 transitions. [2023-12-20 14:53:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 14:53:12,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:12,010 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, 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] [2023-12-20 14:53:12,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:12,219 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,SelfDestructingSolverStorable23 [2023-12-20 14:53:12,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:12,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 334208112, now seen corresponding path program 1 times [2023-12-20 14:53:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827799361] [2023-12-20 14:53:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 14:53:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 14:53:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 14:53:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827799361] [2023-12-20 14:53:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827799361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908353594] [2023-12-20 14:53:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:12,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:12,299 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) [2023-12-20 14:53:12,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 14:53:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:53:12,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 14:53:12,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:12,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908353594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:12,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:12,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:53:12,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539955735] [2023-12-20 14:53:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:53:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:53:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:12,549 INFO L87 Difference]: Start difference. First operand 39806 states and 53525 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-12-20 14:53:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:14,252 INFO L93 Difference]: Finished difference Result 72964 states and 101831 transitions. [2023-12-20 14:53:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:53:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 149 [2023-12-20 14:53:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:14,359 INFO L225 Difference]: With dead ends: 72964 [2023-12-20 14:53:14,359 INFO L226 Difference]: Without dead ends: 37381 [2023-12-20 14:53:14,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:14,420 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 118 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:14,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 174 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37381 states. [2023-12-20 14:53:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37381 to 22245. [2023-12-20 14:53:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22245 states, 18835 states have (on average 1.2415184496947174) internal successors, (23384), 19252 states have internal predecessors, (23384), 1649 states have call successors, (1649), 1248 states have call predecessors, (1649), 1760 states have return successors, (3561), 1748 states have call predecessors, (3561), 1649 states have call successors, (3561) [2023-12-20 14:53:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22245 states to 22245 states and 28594 transitions. [2023-12-20 14:53:15,904 INFO L78 Accepts]: Start accepts. Automaton has 22245 states and 28594 transitions. Word has length 149 [2023-12-20 14:53:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 22245 states and 28594 transitions. [2023-12-20 14:53:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-12-20 14:53:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 22245 states and 28594 transitions. [2023-12-20 14:53:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 14:53:15,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:15,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:15,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:16,127 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,SelfDestructingSolverStorable24 [2023-12-20 14:53:16,128 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:16,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1245110550, now seen corresponding path program 1 times [2023-12-20 14:53:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:16,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696681813] [2023-12-20 14:53:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:16,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 14:53:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 14:53:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 14:53:16,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696681813] [2023-12-20 14:53:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696681813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124805833] [2023-12-20 14:53:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:16,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:16,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:16,210 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) [2023-12-20 14:53:16,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 14:53:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:53:16,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:53:16,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124805833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:16,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:53:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860053728] [2023-12-20 14:53:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:16,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:53:16,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:53:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:16,350 INFO L87 Difference]: Start difference. First operand 22245 states and 28594 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:53:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:17,456 INFO L93 Difference]: Finished difference Result 36039 states and 48214 transitions. [2023-12-20 14:53:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:53:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 150 [2023-12-20 14:53:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:17,508 INFO L225 Difference]: With dead ends: 36039 [2023-12-20 14:53:17,509 INFO L226 Difference]: Without dead ends: 21891 [2023-12-20 14:53:17,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:17,538 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 96 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:17,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 372 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21891 states. [2023-12-20 14:53:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21891 to 21717. [2023-12-20 14:53:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21717 states, 18373 states have (on average 1.2156969466064333) internal successors, (22336), 18757 states have internal predecessors, (22336), 1649 states have call successors, (1649), 1248 states have call predecessors, (1649), 1694 states have return successors, (3457), 1715 states have call predecessors, (3457), 1649 states have call successors, (3457) [2023-12-20 14:53:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21717 states to 21717 states and 27442 transitions. [2023-12-20 14:53:18,764 INFO L78 Accepts]: Start accepts. Automaton has 21717 states and 27442 transitions. Word has length 150 [2023-12-20 14:53:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:18,765 INFO L495 AbstractCegarLoop]: Abstraction has 21717 states and 27442 transitions. [2023-12-20 14:53:18,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 14:53:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 21717 states and 27442 transitions. [2023-12-20 14:53:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 14:53:18,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:18,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:18,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 14:53:18,980 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:18,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash -95076906, now seen corresponding path program 1 times [2023-12-20 14:53:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420269552] [2023-12-20 14:53:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 14:53:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 14:53:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 14:53:19,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420269552] [2023-12-20 14:53:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420269552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473995879] [2023-12-20 14:53:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:19,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:19,060 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:53:19,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 14:53:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 14:53:19,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 14:53:19,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473995879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:19,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-20 14:53:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507146014] [2023-12-20 14:53:19,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:19,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:53:19,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:53:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:19,244 INFO L87 Difference]: Start difference. First operand 21717 states and 27442 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:20,391 INFO L93 Difference]: Finished difference Result 32739 states and 41823 transitions. [2023-12-20 14:53:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:53:20,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-20 14:53:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:20,432 INFO L225 Difference]: With dead ends: 32739 [2023-12-20 14:53:20,432 INFO L226 Difference]: Without dead ends: 17374 [2023-12-20 14:53:20,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:53:20,454 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 166 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:20,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 233 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:53:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17374 states. [2023-12-20 14:53:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17374 to 12812. [2023-12-20 14:53:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12812 states, 10866 states have (on average 1.1957482054113748) internal successors, (12993), 11076 states have internal predecessors, (12993), 975 states have call successors, (975), 722 states have call predecessors, (975), 970 states have return successors, (2067), 1015 states have call predecessors, (2067), 975 states have call successors, (2067) [2023-12-20 14:53:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12812 states to 12812 states and 16035 transitions. [2023-12-20 14:53:21,381 INFO L78 Accepts]: Start accepts. Automaton has 12812 states and 16035 transitions. Word has length 151 [2023-12-20 14:53:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:21,381 INFO L495 AbstractCegarLoop]: Abstraction has 12812 states and 16035 transitions. [2023-12-20 14:53:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12812 states and 16035 transitions. [2023-12-20 14:53:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 14:53:21,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:21,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:21,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 14:53:21,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:21,596 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:21,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash 376279444, now seen corresponding path program 1 times [2023-12-20 14:53:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613785588] [2023-12-20 14:53:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 14:53:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 14:53:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 14:53:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613785588] [2023-12-20 14:53:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613785588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822252305] [2023-12-20 14:53:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:21,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:21,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:53:21,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 14:53:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:21,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:53:21,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 14:53:21,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822252305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-20 14:53:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146395254] [2023-12-20 14:53:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:21,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:53:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:53:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:21,777 INFO L87 Difference]: Start difference. First operand 12812 states and 16035 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:22,480 INFO L93 Difference]: Finished difference Result 22576 states and 28754 transitions. [2023-12-20 14:53:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:53:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-20 14:53:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:22,495 INFO L225 Difference]: With dead ends: 22576 [2023-12-20 14:53:22,495 INFO L226 Difference]: Without dead ends: 7890 [2023-12-20 14:53:22,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:22,510 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 20 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:22,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 430 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7890 states. [2023-12-20 14:53:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7890 to 7668. [2023-12-20 14:53:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7668 states, 6458 states have (on average 1.1735831526788478) internal successors, (7579), 6580 states have internal predecessors, (7579), 609 states have call successors, (609), 457 states have call predecessors, (609), 600 states have return successors, (1087), 631 states have call predecessors, (1087), 609 states have call successors, (1087) [2023-12-20 14:53:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 9275 transitions. [2023-12-20 14:53:23,067 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 9275 transitions. Word has length 151 [2023-12-20 14:53:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:23,067 INFO L495 AbstractCegarLoop]: Abstraction has 7668 states and 9275 transitions. [2023-12-20 14:53:23,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 9275 transitions. [2023-12-20 14:53:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 14:53:23,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:23,071 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, 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] [2023-12-20 14:53:23,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 14:53:23,277 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:23,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1491663802, now seen corresponding path program 1 times [2023-12-20 14:53:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273850995] [2023-12-20 14:53:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 14:53:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 14:53:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-20 14:53:23,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:23,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273850995] [2023-12-20 14:53:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273850995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:23,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115709246] [2023-12-20 14:53:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:23,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:23,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:23,405 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:53:23,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 14:53:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:23,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:53:23,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-20 14:53:23,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:23,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115709246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:23,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:23,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-20 14:53:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080720047] [2023-12-20 14:53:23,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:23,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:53:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:53:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:23,507 INFO L87 Difference]: Start difference. First operand 7668 states and 9275 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:23,951 INFO L93 Difference]: Finished difference Result 14466 states and 17866 transitions. [2023-12-20 14:53:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:53:23,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-20 14:53:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:23,961 INFO L225 Difference]: With dead ends: 14466 [2023-12-20 14:53:23,961 INFO L226 Difference]: Without dead ends: 6808 [2023-12-20 14:53:23,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:23,967 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 11 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 429 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6808 states. [2023-12-20 14:53:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6808 to 6788. [2023-12-20 14:53:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 5693 states have (on average 1.1531705603372562) internal successors, (6565), 5797 states have internal predecessors, (6565), 557 states have call successors, (557), 416 states have call predecessors, (557), 537 states have return successors, (932), 575 states have call predecessors, (932), 557 states have call successors, (932) [2023-12-20 14:53:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 8054 transitions. [2023-12-20 14:53:24,355 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 8054 transitions. Word has length 151 [2023-12-20 14:53:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:24,355 INFO L495 AbstractCegarLoop]: Abstraction has 6788 states and 8054 transitions. [2023-12-20 14:53:24,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 8054 transitions. [2023-12-20 14:53:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 14:53:24,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:24,357 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, 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] [2023-12-20 14:53:24,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:24,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:53:24,563 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:24,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -194294648, now seen corresponding path program 1 times [2023-12-20 14:53:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676119471] [2023-12-20 14:53:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:53:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:53:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 14:53:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 14:53:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-20 14:53:24,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:24,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676119471] [2023-12-20 14:53:24,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676119471] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:53:24,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214766922] [2023-12-20 14:53:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:24,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:24,655 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:53:24,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 14:53:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:53:24,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:53:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 14:53:24,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:53:24,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214766922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:24,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:53:24,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-20 14:53:24,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911960273] [2023-12-20 14:53:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:24,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:53:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:53:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:24,757 INFO L87 Difference]: Start difference. First operand 6788 states and 8054 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:24,991 INFO L93 Difference]: Finished difference Result 9641 states and 11452 transitions. [2023-12-20 14:53:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:53:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-20 14:53:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:24,995 INFO L225 Difference]: With dead ends: 9641 [2023-12-20 14:53:24,995 INFO L226 Difference]: Without dead ends: 1889 [2023-12-20 14:53:25,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:25,003 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:25,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 430 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:53:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-12-20 14:53:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2023-12-20 14:53:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1588 states have (on average 1.1272040302267003) internal successors, (1790), 1599 states have internal predecessors, (1790), 172 states have call successors, (172), 120 states have call predecessors, (172), 128 states have return successors, (187), 170 states have call predecessors, (187), 172 states have call successors, (187) [2023-12-20 14:53:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2149 transitions. [2023-12-20 14:53:25,190 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2149 transitions. Word has length 151 [2023-12-20 14:53:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:25,191 INFO L495 AbstractCegarLoop]: Abstraction has 1889 states and 2149 transitions. [2023-12-20 14:53:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:53:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2149 transitions. [2023-12-20 14:53:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-20 14:53:25,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:25,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:25,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 14:53:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:53:25,400 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:25,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 861655127, now seen corresponding path program 1 times [2023-12-20 14:53:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776093991] [2023-12-20 14:53:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:53:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-20 14:53:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-20 14:53:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-20 14:53:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 14:53:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 14:53:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:53:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-20 14:53:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 14:53:25,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776093991] [2023-12-20 14:53:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776093991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:25,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960294867] [2023-12-20 14:53:25,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:25,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:25,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:25,645 INFO L87 Difference]: Start difference. First operand 1889 states and 2149 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-20 14:53:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:26,393 INFO L93 Difference]: Finished difference Result 2287 states and 2583 transitions. [2023-12-20 14:53:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 183 [2023-12-20 14:53:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:26,395 INFO L225 Difference]: With dead ends: 2287 [2023-12-20 14:53:26,395 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 14:53:26,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:26,398 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 645 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:26,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 639 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:53:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 14:53:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 14:53:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:53:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 14:53:26,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2023-12-20 14:53:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:26,399 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 14:53:26,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-20 14:53:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 14:53:26,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 14:53:26,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 14:53:26,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 14:53:26,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:53:26,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.