/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.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:10:37,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:10:37,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:10:37,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:10:37,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:10:37,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:10:37,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:10:37,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:10:37,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:10:37,532 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:10:37,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:10:37,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:10:37,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:10:37,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:10:37,535 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:10:37,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:10:37,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:10:37,535 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:10:37,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:10:37,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:10:37,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:10:37,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:10:37,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:10:37,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:10:37,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:10:37,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:10:37,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:10:37,538 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:10:37,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:10:37,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:10:37,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:10:37,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:10:37,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:10:37,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:10:37,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:10:37,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:10:37,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:10:37,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:10:37,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:10:37,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:10:37,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:10:37,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:10:37,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:10:37,791 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:10:37,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-16 01:10:38,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:10:39,086 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:10:39,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-16 01:10:39,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1232f3b0d/96c4d214b9a442ac8d2bf617c24100d1/FLAG216ccdb9f [2023-12-16 01:10:39,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1232f3b0d/96c4d214b9a442ac8d2bf617c24100d1 [2023-12-16 01:10:39,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:10:39,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:10:39,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:10:39,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:10:39,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:10:39,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@adce842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39, skipping insertion in model container [2023-12-16 01:10:39,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:10:39,263 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.04.cil-2.c[911,924] [2023-12-16 01:10:39,312 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.04.cil-2.c[8416,8429] [2023-12-16 01:10:39,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:10:39,370 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:10:39,389 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.04.cil-2.c[911,924] [2023-12-16 01:10:39,415 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.04.cil-2.c[8416,8429] [2023-12-16 01:10:39,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:10:39,492 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:10:39,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39 WrapperNode [2023-12-16 01:10:39,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:10:39,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:10:39,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:10:39,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:10:39,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,549 INFO L138 Inliner]: procedures = 63, calls = 74, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 632 [2023-12-16 01:10:39,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:10:39,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:10:39,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:10:39,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:10:39,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,573 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]. [2023-12-16 01:10:39,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:10:39,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:10:39,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:10:39,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:10:39,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (1/1) ... [2023-12-16 01:10:39,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:10:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:10:39,658 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) [2023-12-16 01:10:39,678 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 [2023-12-16 01:10:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:10:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 01:10:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 01:10:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-16 01:10:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-16 01:10:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 01:10:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 01:10:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 01:10:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 01:10:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-16 01:10:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-16 01:10:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 01:10:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 01:10:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 01:10:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 01:10:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-16 01:10:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-16 01:10:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-16 01:10:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-16 01:10:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-16 01:10:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-16 01:10:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 01:10:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 01:10:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:10:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 01:10:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 01:10:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-16 01:10:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-16 01:10:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:10:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:10:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 01:10:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 01:10:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 01:10:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 01:10:39,820 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:10:39,822 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:10:40,279 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-16 01:10:40,280 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; [2023-12-16 01:10:40,360 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:10:40,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:10:40,428 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-16 01:10:40,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:40 BoogieIcfgContainer [2023-12-16 01:10:40,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:10:40,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:10:40,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:10:40,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:10:40,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:10:39" (1/3) ... [2023-12-16 01:10:40,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355f495f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:40, skipping insertion in model container [2023-12-16 01:10:40,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:39" (2/3) ... [2023-12-16 01:10:40,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355f495f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:40, skipping insertion in model container [2023-12-16 01:10:40,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:40" (3/3) ... [2023-12-16 01:10:40,446 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.c [2023-12-16 01:10:40,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:10:40,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:10:40,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:10:40,527 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;@150726b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:10:40,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:10:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 222 states have (on average 1.6756756756756757) internal successors, (372), 230 states have internal predecessors, (372), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 01:10:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:10:40,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:40,543 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] [2023-12-16 01:10:40,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:40,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash -472300061, now seen corresponding path program 1 times [2023-12-16 01:10:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756480371] [2023-12-16 01:10:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:10:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:10:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:10:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:10:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:10:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:41,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756480371] [2023-12-16 01:10:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756480371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:41,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:10:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590085453] [2023-12-16 01:10:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:10:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:10:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:10:41,099 INFO L87 Difference]: Start difference. First operand has 276 states, 222 states have (on average 1.6756756756756757) internal successors, (372), 230 states have internal predecessors, (372), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 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) [2023-12-16 01:10:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:42,192 INFO L93 Difference]: Finished difference Result 705 states and 1136 transitions. [2023-12-16 01:10:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 01:10:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 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 [2023-12-16 01:10:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:42,213 INFO L225 Difference]: With dead ends: 705 [2023-12-16 01:10:42,213 INFO L226 Difference]: Without dead ends: 441 [2023-12-16 01:10:42,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-16 01:10:42,224 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1008 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:42,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1192 Invalid, 1408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:10:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-16 01:10:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 375. [2023-12-16 01:10:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 301 states have (on average 1.548172757475083) internal successors, (466), 309 states have internal predecessors, (466), 49 states have call successors, (49), 22 states have call predecessors, (49), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2023-12-16 01:10:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 571 transitions. [2023-12-16 01:10:42,319 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 571 transitions. Word has length 57 [2023-12-16 01:10:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:42,319 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 571 transitions. [2023-12-16 01:10:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 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) [2023-12-16 01:10:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 571 transitions. [2023-12-16 01:10:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:10:42,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:42,328 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] [2023-12-16 01:10:42,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:10:42,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:42,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 421186277, now seen corresponding path program 1 times [2023-12-16 01:10:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:42,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775191841] [2023-12-16 01:10:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:10:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:10:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:10:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:10:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:10:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775191841] [2023-12-16 01:10:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775191841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706880489] [2023-12-16 01:10:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:42,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:42,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:42,482 INFO L87 Difference]: Start difference. First operand 375 states and 571 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) [2023-12-16 01:10:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:43,187 INFO L93 Difference]: Finished difference Result 775 states and 1157 transitions. [2023-12-16 01:10:43,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 01:10:43,188 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 [2023-12-16 01:10:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:43,191 INFO L225 Difference]: With dead ends: 775 [2023-12-16 01:10:43,191 INFO L226 Difference]: Without dead ends: 583 [2023-12-16 01:10:43,192 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 [2023-12-16 01:10:43,192 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 880 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:43,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1061 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:10:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-16 01:10:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 545. [2023-12-16 01:10:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 434 states have (on average 1.5138248847926268) internal successors, (657), 445 states have internal predecessors, (657), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (82), 66 states have call predecessors, (82), 65 states have call successors, (82) [2023-12-16 01:10:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 808 transitions. [2023-12-16 01:10:43,228 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 808 transitions. Word has length 57 [2023-12-16 01:10:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:43,228 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 808 transitions. [2023-12-16 01:10:43,228 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) [2023-12-16 01:10:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 808 transitions. [2023-12-16 01:10:43,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:10:43,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:43,229 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] [2023-12-16 01:10:43,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:10:43,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:43,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1520257116, now seen corresponding path program 1 times [2023-12-16 01:10:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149393295] [2023-12-16 01:10:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:10:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:10:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 01:10:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:10:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149393295] [2023-12-16 01:10:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149393295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:43,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:43,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:10:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032674682] [2023-12-16 01:10:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:10:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:10:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:10:43,331 INFO L87 Difference]: Start difference. First operand 545 states and 808 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) [2023-12-16 01:10:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:44,133 INFO L93 Difference]: Finished difference Result 945 states and 1389 transitions. [2023-12-16 01:10:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 01:10:44,133 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 [2023-12-16 01:10:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:44,136 INFO L225 Difference]: With dead ends: 945 [2023-12-16 01:10:44,136 INFO L226 Difference]: Without dead ends: 583 [2023-12-16 01:10:44,137 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 [2023-12-16 01:10:44,138 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 329 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:44,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1508 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:10:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-16 01:10:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 553. [2023-12-16 01:10:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 440 states have (on average 1.5022727272727272) internal successors, (661), 451 states have internal predecessors, (661), 69 states have call successors, (69), 36 states have call predecessors, (69), 42 states have return successors, (84), 68 states have call predecessors, (84), 65 states have call successors, (84) [2023-12-16 01:10:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 814 transitions. [2023-12-16 01:10:44,176 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 814 transitions. Word has length 58 [2023-12-16 01:10:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 814 transitions. [2023-12-16 01:10:44,176 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) [2023-12-16 01:10:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 814 transitions. [2023-12-16 01:10:44,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:10:44,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:44,177 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] [2023-12-16 01:10:44,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:10:44,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:44,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1592643674, now seen corresponding path program 1 times [2023-12-16 01:10:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647165254] [2023-12-16 01:10:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:10:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:10:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 01:10:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:10:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647165254] [2023-12-16 01:10:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647165254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:44,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:44,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:10:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413670258] [2023-12-16 01:10:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:10:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:10:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:10:44,279 INFO L87 Difference]: Start difference. First operand 553 states and 814 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) [2023-12-16 01:10:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:45,880 INFO L93 Difference]: Finished difference Result 1885 states and 2796 transitions. [2023-12-16 01:10:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 01:10:45,881 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 [2023-12-16 01:10:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:45,885 INFO L225 Difference]: With dead ends: 1885 [2023-12-16 01:10:45,885 INFO L226 Difference]: Without dead ends: 773 [2023-12-16 01:10:45,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 01:10:45,888 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1705 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:45,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 1451 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:10:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-12-16 01:10:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 697. [2023-12-16 01:10:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 545 states have (on average 1.455045871559633) internal successors, (793), 559 states have internal predecessors, (793), 89 states have call successors, (89), 50 states have call predecessors, (89), 61 states have return successors, (120), 90 states have call predecessors, (120), 85 states have call successors, (120) [2023-12-16 01:10:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1002 transitions. [2023-12-16 01:10:45,923 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1002 transitions. Word has length 58 [2023-12-16 01:10:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:45,923 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1002 transitions. [2023-12-16 01:10:45,924 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) [2023-12-16 01:10:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1002 transitions. [2023-12-16 01:10:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:10:45,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:45,925 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] [2023-12-16 01:10:45,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:10:45,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:45,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 400017257, now seen corresponding path program 1 times [2023-12-16 01:10:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441014392] [2023-12-16 01:10:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:45,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:10:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:10:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:10:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:10:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:10:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:46,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:46,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441014392] [2023-12-16 01:10:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441014392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:46,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:46,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:10:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574396227] [2023-12-16 01:10:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:46,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:10:46,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:10:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:10:46,032 INFO L87 Difference]: Start difference. First operand 697 states and 1002 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) [2023-12-16 01:10:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:46,964 INFO L93 Difference]: Finished difference Result 1527 states and 2208 transitions. [2023-12-16 01:10:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 01:10:46,965 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 [2023-12-16 01:10:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:46,966 INFO L225 Difference]: With dead ends: 1527 [2023-12-16 01:10:46,966 INFO L226 Difference]: Without dead ends: 170 [2023-12-16 01:10:46,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-16 01:10:46,969 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1053 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 822 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:10:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-16 01:10:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-16 01:10:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 143 states have (on average 1.5874125874125875) internal successors, (227), 145 states have internal predecessors, (227), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 01:10:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 265 transitions. [2023-12-16 01:10:46,976 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 265 transitions. Word has length 59 [2023-12-16 01:10:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:46,976 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 265 transitions. [2023-12-16 01:10:46,977 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) [2023-12-16 01:10:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 265 transitions. [2023-12-16 01:10:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:46,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:46,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:46,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:10:46,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:46,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 643537407, now seen corresponding path program 1 times [2023-12-16 01:10:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:46,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895779421] [2023-12-16 01:10:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:47,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895779421] [2023-12-16 01:10:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895779421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:47,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:47,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:10:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851476892] [2023-12-16 01:10:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:10:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:10:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:10:47,056 INFO L87 Difference]: Start difference. First operand 170 states and 265 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:47,582 INFO L93 Difference]: Finished difference Result 381 states and 604 transitions. [2023-12-16 01:10:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 01:10:47,582 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), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:47,584 INFO L225 Difference]: With dead ends: 381 [2023-12-16 01:10:47,584 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 01:10:47,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:10:47,585 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 419 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:47,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 323 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:10:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 01:10:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 170. [2023-12-16 01:10:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 143 states have (on average 1.5804195804195804) internal successors, (226), 145 states have internal predecessors, (226), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 01:10:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 264 transitions. [2023-12-16 01:10:47,597 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 264 transitions. Word has length 82 [2023-12-16 01:10:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:47,598 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 264 transitions. [2023-12-16 01:10:47,598 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), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 264 transitions. [2023-12-16 01:10:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:47,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:47,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:47,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:10:47,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:47,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash 566636609, now seen corresponding path program 1 times [2023-12-16 01:10:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:47,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686403553] [2023-12-16 01:10:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686403553] [2023-12-16 01:10:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686403553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:47,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:10:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8706473] [2023-12-16 01:10:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:10:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:10:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:10:47,729 INFO L87 Difference]: Start difference. First operand 170 states and 264 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:48,470 INFO L93 Difference]: Finished difference Result 591 states and 942 transitions. [2023-12-16 01:10:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 01:10:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:48,473 INFO L225 Difference]: With dead ends: 591 [2023-12-16 01:10:48,473 INFO L226 Difference]: Without dead ends: 432 [2023-12-16 01:10:48,473 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 [2023-12-16 01:10:48,474 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 621 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:48,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 540 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:10:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-16 01:10:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 331. [2023-12-16 01:10:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 284 states have (on average 1.591549295774648) internal successors, (452), 287 states have internal predecessors, (452), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-16 01:10:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 519 transitions. [2023-12-16 01:10:48,505 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 519 transitions. Word has length 82 [2023-12-16 01:10:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:48,505 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 519 transitions. [2023-12-16 01:10:48,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 519 transitions. [2023-12-16 01:10:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:48,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:48,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:10:48,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:48,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -435462655, now seen corresponding path program 1 times [2023-12-16 01:10:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597841791] [2023-12-16 01:10:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597841791] [2023-12-16 01:10:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597841791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295222817] [2023-12-16 01:10:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:48,664 INFO L87 Difference]: Start difference. First operand 331 states and 519 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:49,541 INFO L93 Difference]: Finished difference Result 966 states and 1536 transitions. [2023-12-16 01:10:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:10:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:49,544 INFO L225 Difference]: With dead ends: 966 [2023-12-16 01:10:49,545 INFO L226 Difference]: Without dead ends: 646 [2023-12-16 01:10:49,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:10:49,546 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 622 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:49,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1021 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:10:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-12-16 01:10:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 481. [2023-12-16 01:10:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 414 states have (on average 1.5845410628019323) internal successors, (656), 418 states have internal predecessors, (656), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-16 01:10:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 751 transitions. [2023-12-16 01:10:49,621 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 751 transitions. Word has length 82 [2023-12-16 01:10:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:49,621 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 751 transitions. [2023-12-16 01:10:49,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 751 transitions. [2023-12-16 01:10:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:49,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:49,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:49,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:10:49,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:49,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash 518477503, now seen corresponding path program 1 times [2023-12-16 01:10:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:49,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144650856] [2023-12-16 01:10:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144650856] [2023-12-16 01:10:49,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144650856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:49,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:49,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:49,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66776681] [2023-12-16 01:10:49,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:49,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:49,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:49,804 INFO L87 Difference]: Start difference. First operand 481 states and 751 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:50,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:50,774 INFO L93 Difference]: Finished difference Result 1515 states and 2404 transitions. [2023-12-16 01:10:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:10:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:50,778 INFO L225 Difference]: With dead ends: 1515 [2023-12-16 01:10:50,778 INFO L226 Difference]: Without dead ends: 1045 [2023-12-16 01:10:50,779 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 [2023-12-16 01:10:50,780 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 620 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:50,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1019 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:10:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-16 01:10:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 782. [2023-12-16 01:10:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 675 states have (on average 1.5777777777777777) internal successors, (1065), 681 states have internal predecessors, (1065), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-16 01:10:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1220 transitions. [2023-12-16 01:10:50,811 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1220 transitions. Word has length 82 [2023-12-16 01:10:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:50,811 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1220 transitions. [2023-12-16 01:10:50,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1220 transitions. [2023-12-16 01:10:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:50,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:50,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:10:50,813 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:50,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -697676223, now seen corresponding path program 1 times [2023-12-16 01:10:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077776890] [2023-12-16 01:10:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077776890] [2023-12-16 01:10:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077776890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:50,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:50,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315226769] [2023-12-16 01:10:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:50,902 INFO L87 Difference]: Start difference. First operand 782 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:52,011 INFO L93 Difference]: Finished difference Result 2572 states and 4073 transitions. [2023-12-16 01:10:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:10:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:52,018 INFO L225 Difference]: With dead ends: 2572 [2023-12-16 01:10:52,018 INFO L226 Difference]: Without dead ends: 1801 [2023-12-16 01:10:52,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:10:52,020 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 616 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:52,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1019 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:10:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-12-16 01:10:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1385. [2023-12-16 01:10:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1198 states have (on average 1.5717863105175292) internal successors, (1883), 1208 states have internal predecessors, (1883), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2023-12-16 01:10:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2164 transitions. [2023-12-16 01:10:52,080 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2164 transitions. Word has length 82 [2023-12-16 01:10:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:52,080 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 2164 transitions. [2023-12-16 01:10:52,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2164 transitions. [2023-12-16 01:10:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:52,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:52,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:10:52,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:52,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1429643649, now seen corresponding path program 1 times [2023-12-16 01:10:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237108697] [2023-12-16 01:10:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237108697] [2023-12-16 01:10:52,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237108697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:52,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:52,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520526632] [2023-12-16 01:10:52,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:52,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:52,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:52,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:52,181 INFO L87 Difference]: Start difference. First operand 1385 states and 2164 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:53,283 INFO L93 Difference]: Finished difference Result 4685 states and 7427 transitions. [2023-12-16 01:10:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:10:53,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:53,296 INFO L225 Difference]: With dead ends: 4685 [2023-12-16 01:10:53,297 INFO L226 Difference]: Without dead ends: 3311 [2023-12-16 01:10:53,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:10:53,301 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 672 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:53,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 670 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:10:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2023-12-16 01:10:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2596. [2023-12-16 01:10:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2249 states have (on average 1.5673632725655846) internal successors, (3525), 2267 states have internal predecessors, (3525), 228 states have call successors, (228), 103 states have call predecessors, (228), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2023-12-16 01:10:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4076 transitions. [2023-12-16 01:10:53,436 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4076 transitions. Word has length 82 [2023-12-16 01:10:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:53,436 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 4076 transitions. [2023-12-16 01:10:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4076 transitions. [2023-12-16 01:10:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:53,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:53,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:53,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:10:53,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:53,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1179143809, now seen corresponding path program 1 times [2023-12-16 01:10:53,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:53,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473848179] [2023-12-16 01:10:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473848179] [2023-12-16 01:10:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473848179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:53,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778684735] [2023-12-16 01:10:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:53,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:53,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:53,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:53,531 INFO L87 Difference]: Start difference. First operand 2596 states and 4076 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:54,883 INFO L93 Difference]: Finished difference Result 9615 states and 15303 transitions. [2023-12-16 01:10:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:10:54,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:54,917 INFO L225 Difference]: With dead ends: 9615 [2023-12-16 01:10:54,917 INFO L226 Difference]: Without dead ends: 7030 [2023-12-16 01:10:54,925 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 [2023-12-16 01:10:54,926 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 732 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:54,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1008 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:10:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7030 states. [2023-12-16 01:10:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7030 to 4856. [2023-12-16 01:10:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4205 states have (on average 1.559334126040428) internal successors, (6557), 4239 states have internal predecessors, (6557), 420 states have call successors, (420), 199 states have call predecessors, (420), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2023-12-16 01:10:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7670 transitions. [2023-12-16 01:10:55,179 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7670 transitions. Word has length 82 [2023-12-16 01:10:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:55,179 INFO L495 AbstractCegarLoop]: Abstraction has 4856 states and 7670 transitions. [2023-12-16 01:10:55,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7670 transitions. [2023-12-16 01:10:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:55,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:55,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:10:55,186 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:55,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash 761747203, now seen corresponding path program 1 times [2023-12-16 01:10:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:55,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785624067] [2023-12-16 01:10:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:55,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785624067] [2023-12-16 01:10:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785624067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:55,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533883718] [2023-12-16 01:10:55,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:55,322 INFO L87 Difference]: Start difference. First operand 4856 states and 7670 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:56,838 INFO L93 Difference]: Finished difference Result 17861 states and 28555 transitions. [2023-12-16 01:10:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:10:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:56,899 INFO L225 Difference]: With dead ends: 17861 [2023-12-16 01:10:56,899 INFO L226 Difference]: Without dead ends: 13016 [2023-12-16 01:10:56,910 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 [2023-12-16 01:10:56,911 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 633 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1012 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:10:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13016 states. [2023-12-16 01:10:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13016 to 9533. [2023-12-16 01:10:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 8290 states have (on average 1.560313630880579) internal successors, (12935), 8356 states have internal predecessors, (12935), 788 states have call successors, (788), 391 states have call predecessors, (788), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2023-12-16 01:10:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 15302 transitions. [2023-12-16 01:10:57,506 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 15302 transitions. Word has length 82 [2023-12-16 01:10:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:10:57,506 INFO L495 AbstractCegarLoop]: Abstraction has 9533 states and 15302 transitions. [2023-12-16 01:10:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 15302 transitions. [2023-12-16 01:10:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:10:57,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:10:57,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:10:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:10:57,532 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:10:57,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:10:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1441019457, now seen corresponding path program 1 times [2023-12-16 01:10:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:10:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321133147] [2023-12-16 01:10:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:10:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:10:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:10:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:10:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:10:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:10:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:10:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:10:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:10:57,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:10:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321133147] [2023-12-16 01:10:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321133147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:10:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:10:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:10:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208235122] [2023-12-16 01:10:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:10:57,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:10:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:10:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:10:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:10:57,736 INFO L87 Difference]: Start difference. First operand 9533 states and 15302 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:10:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:10:59,653 INFO L93 Difference]: Finished difference Result 34320 states and 55705 transitions. [2023-12-16 01:10:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:10:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:10:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:10:59,811 INFO L225 Difference]: With dead ends: 34320 [2023-12-16 01:10:59,811 INFO L226 Difference]: Without dead ends: 24798 [2023-12-16 01:10:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:10:59,849 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 661 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:10:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1012 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:10:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24798 states. [2023-12-16 01:11:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24798 to 18886. [2023-12-16 01:11:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18886 states, 16491 states have (on average 1.5616396822509246) internal successors, (25753), 16621 states have internal predecessors, (25753), 1492 states have call successors, (1492), 775 states have call predecessors, (1492), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2023-12-16 01:11:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18886 states to 18886 states and 31050 transitions. [2023-12-16 01:11:01,566 INFO L78 Accepts]: Start accepts. Automaton has 18886 states and 31050 transitions. Word has length 82 [2023-12-16 01:11:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:11:01,566 INFO L495 AbstractCegarLoop]: Abstraction has 18886 states and 31050 transitions. [2023-12-16 01:11:01,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:11:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18886 states and 31050 transitions. [2023-12-16 01:11:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:11:01,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:11:01,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:11:01,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:11:01,584 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:11:01,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:11:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash -892373181, now seen corresponding path program 1 times [2023-12-16 01:11:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:11:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924535370] [2023-12-16 01:11:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:11:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:11:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:11:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:11:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:11:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:11:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:11:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:11:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:11:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924535370] [2023-12-16 01:11:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924535370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:11:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:11:01,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:11:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451560133] [2023-12-16 01:11:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:11:01,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:11:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:11:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:11:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:11:01,690 INFO L87 Difference]: Start difference. First operand 18886 states and 31050 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:11:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:11:04,235 INFO L93 Difference]: Finished difference Result 66279 states and 110287 transitions. [2023-12-16 01:11:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:11:04,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:11:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:11:04,419 INFO L225 Difference]: With dead ends: 66279 [2023-12-16 01:11:04,420 INFO L226 Difference]: Without dead ends: 47404 [2023-12-16 01:11:04,468 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 [2023-12-16 01:11:04,469 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 622 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:11:04,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1012 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:11:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47404 states. [2023-12-16 01:11:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47404 to 37591. [2023-12-16 01:11:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37591 states, 32956 states have (on average 1.5631447991261076) internal successors, (51515), 33214 states have internal predecessors, (51515), 2836 states have call successors, (2836), 1543 states have call predecessors, (2836), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2023-12-16 01:11:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37591 states to 37591 states and 64002 transitions. [2023-12-16 01:11:07,056 INFO L78 Accepts]: Start accepts. Automaton has 37591 states and 64002 transitions. Word has length 82 [2023-12-16 01:11:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:11:07,056 INFO L495 AbstractCegarLoop]: Abstraction has 37591 states and 64002 transitions. [2023-12-16 01:11:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:11:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 37591 states and 64002 transitions. [2023-12-16 01:11:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 01:11:07,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:11:07,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:11:07,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:11:07,094 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:11:07,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:11:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash -690549247, now seen corresponding path program 1 times [2023-12-16 01:11:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:11:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984850656] [2023-12-16 01:11:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:11:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:11:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:11:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:11:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:11:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:11:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:11:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:11:07,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:11:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984850656] [2023-12-16 01:11:07,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984850656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:11:07,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:11:07,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:11:07,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380069720] [2023-12-16 01:11:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:11:07,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:11:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:11:07,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:11:07,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:11:07,406 INFO L87 Difference]: Start difference. First operand 37591 states and 64002 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:11:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:11:14,097 INFO L93 Difference]: Finished difference Result 171255 states and 291288 transitions. [2023-12-16 01:11:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 01:11:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 01:11:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:11:14,953 INFO L225 Difference]: With dead ends: 171255 [2023-12-16 01:11:14,953 INFO L226 Difference]: Without dead ends: 133676 [2023-12-16 01:11:15,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-16 01:11:15,057 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1631 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:11:15,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 814 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 01:11:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133676 states. [2023-12-16 01:11:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133676 to 108866. [2023-12-16 01:11:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108866 states, 95021 states have (on average 1.544374401448101) internal successors, (146748), 96178 states have internal predecessors, (146748), 8444 states have call successors, (8444), 4633 states have call predecessors, (8444), 5400 states have return successors, (28268), 8310 states have call predecessors, (28268), 8442 states have call successors, (28268) [2023-12-16 01:11:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108866 states to 108866 states and 183460 transitions. [2023-12-16 01:11:22,016 INFO L78 Accepts]: Start accepts. Automaton has 108866 states and 183460 transitions. Word has length 82 [2023-12-16 01:11:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:11:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 108866 states and 183460 transitions. [2023-12-16 01:11:22,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:11:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 108866 states and 183460 transitions. [2023-12-16 01:11:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 01:11:22,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:11:22,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:11:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:11:22,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:11:22,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:11:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1188991688, now seen corresponding path program 1 times [2023-12-16 01:11:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:11:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569843411] [2023-12-16 01:11:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:11:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:11:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:11:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 01:11:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 01:11:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 01:11:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:11:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 01:11:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 01:11:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 01:11:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:11:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:11:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569843411] [2023-12-16 01:11:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569843411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:11:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080318696] [2023-12-16 01:11:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:11:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:11:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:11:22,409 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) [2023-12-16 01:11:22,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:11:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:11:22,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:11:22,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:11:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 01:11:22,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:11:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080318696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:11:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:11:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 01:11:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014089928] [2023-12-16 01:11:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:11:22,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:11:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:11:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:11:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:11:22,646 INFO L87 Difference]: Start difference. First operand 108866 states and 183460 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:11:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:11:32,791 INFO L93 Difference]: Finished difference Result 324253 states and 551705 transitions. [2023-12-16 01:11:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:11:32,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-16 01:11:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:11:34,097 INFO L225 Difference]: With dead ends: 324253 [2023-12-16 01:11:34,098 INFO L226 Difference]: Without dead ends: 215399 [2023-12-16 01:11:34,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:11:34,364 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 213 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:11:34,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 460 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:11:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215399 states. Received shutdown request... [2023-12-16 01:11:39,554 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:11:39,559 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:11:40,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 01:11:40,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:11:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215399 to 214623. Cannot interrupt operation gracefully because timeout expired. Forcing shutdown