/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_2.cil-1+token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:08:37,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:08:37,776 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 01:08:37,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:08:37,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:08:37,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:08:37,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:08:37,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:08:37,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:08:37,813 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:08:37,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:08:37,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:08:37,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:08:37,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:08:37,815 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:08:37,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:08:37,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:08:37,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:08:37,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:08:37,817 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:08:37,817 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:08:37,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:08:37,817 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:08:37,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:08:37,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:08:37,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:08:37,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:08:37,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:08:37,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:08:37,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:08:37,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:08:37,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:08:38,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:08:38,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:08:38,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:08:38,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:08:38,049 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:08:38,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2023-12-16 01:08:39,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:08:39,242 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:08:39,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2023-12-16 01:08:39,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797108204/6e186169e4d246419d451ddb2498bad7/FLAG9cb65a187 [2023-12-16 01:08:39,261 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797108204/6e186169e4d246419d451ddb2498bad7 [2023-12-16 01:08:39,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:08:39,264 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:08:39,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:08:39,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:08:39,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:08:39,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e42b65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39, skipping insertion in model container [2023-12-16 01:08:39,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:08:39,436 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2023-12-16 01:08:39,472 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2023-12-16 01:08:39,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:08:39,552 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:08:39,560 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2023-12-16 01:08:39,582 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2023-12-16 01:08:39,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:08:39,631 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:08:39,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39 WrapperNode [2023-12-16 01:08:39,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:08:39,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:08:39,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:08:39,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:08:39,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,680 INFO L138 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 714 [2023-12-16 01:08:39,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:08:39,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:08:39,681 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:08:39,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:08:39,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,705 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 01:08:39,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:08:39,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:08:39,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:08:39,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:08:39,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (1/1) ... [2023-12-16 01:08:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:08:39,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:08:39,786 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 01:08:39,827 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 01:08:39,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:08:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 01:08:39,832 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 01:08:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-16 01:08:39,832 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-16 01:08:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 01:08:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 01:08:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 01:08:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-16 01:08:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-16 01:08:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 01:08:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 01:08:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 01:08:39,969 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:08:39,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:08:40,470 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:08:40,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:08:40,529 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-16 01:08:40,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:08:40 BoogieIcfgContainer [2023-12-16 01:08:40,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:08:40,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:08:40,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:08:40,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:08:40,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:08:39" (1/3) ... [2023-12-16 01:08:40,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f444cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:08:40, skipping insertion in model container [2023-12-16 01:08:40,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:08:39" (2/3) ... [2023-12-16 01:08:40,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f444cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:08:40, skipping insertion in model container [2023-12-16 01:08:40,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:08:40" (3/3) ... [2023-12-16 01:08:40,537 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2023-12-16 01:08:40,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:08:40,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:08:40,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:08:40,607 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;@6804f97c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:08:40,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:08:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 255 states have (on average 1.6901960784313725) internal successors, (431), 263 states have internal predecessors, (431), 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 01:08:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:08:40,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:40,622 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] [2023-12-16 01:08:40,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:40,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1352984849, now seen corresponding path program 1 times [2023-12-16 01:08:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655039294] [2023-12-16 01:08:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:41,048 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 01:08:41,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655039294] [2023-12-16 01:08:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655039294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:41,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:08:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439886133] [2023-12-16 01:08:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:08:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:08:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:08:41,100 INFO L87 Difference]: Start difference. First operand has 309 states, 255 states have (on average 1.6901960784313725) internal successors, (431), 263 states have internal predecessors, (431), 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 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:41,953 INFO L93 Difference]: Finished difference Result 723 states and 1169 transitions. [2023-12-16 01:08:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:08:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-16 01:08:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:41,964 INFO L225 Difference]: With dead ends: 723 [2023-12-16 01:08:41,964 INFO L226 Difference]: Without dead ends: 428 [2023-12-16 01:08:41,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:08:41,971 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 799 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:41,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1039 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:08:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-16 01:08:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 391. [2023-12-16 01:08:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 320 states have (on average 1.546875) internal successors, (495), 327 states have internal predecessors, (495), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2023-12-16 01:08:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 590 transitions. [2023-12-16 01:08:42,025 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 590 transitions. Word has length 58 [2023-12-16 01:08:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:42,026 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 590 transitions. [2023-12-16 01:08:42,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 590 transitions. [2023-12-16 01:08:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:08:42,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:42,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:42,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:08:42,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:42,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1218751185, now seen corresponding path program 1 times [2023-12-16 01:08:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987375587] [2023-12-16 01:08:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:42,256 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 01:08:42,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987375587] [2023-12-16 01:08:42,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987375587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:08:42,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131098910] [2023-12-16 01:08:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:08:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:08:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:08:42,264 INFO L87 Difference]: Start difference. First operand 391 states and 590 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:43,165 INFO L93 Difference]: Finished difference Result 711 states and 1040 transitions. [2023-12-16 01:08:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 01:08:43,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-16 01:08:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:43,169 INFO L225 Difference]: With dead ends: 711 [2023-12-16 01:08:43,169 INFO L226 Difference]: Without dead ends: 549 [2023-12-16 01:08:43,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-16 01:08:43,171 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 908 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:43,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1458 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:08:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-16 01:08:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 479. [2023-12-16 01:08:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 388 states have (on average 1.5231958762886597) internal successors, (591), 397 states have internal predecessors, (591), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2023-12-16 01:08:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 716 transitions. [2023-12-16 01:08:43,221 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 716 transitions. Word has length 58 [2023-12-16 01:08:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:43,221 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 716 transitions. [2023-12-16 01:08:43,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 716 transitions. [2023-12-16 01:08:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:08:43,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:43,223 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 01:08:43,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:08:43,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1147943409, now seen corresponding path program 1 times [2023-12-16 01:08:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646527224] [2023-12-16 01:08:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:43,332 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 01:08:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646527224] [2023-12-16 01:08:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646527224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:43,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 01:08:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147402536] [2023-12-16 01:08:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:08:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:08:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:08:43,334 INFO L87 Difference]: Start difference. First operand 479 states and 716 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-16 01:08:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:44,693 INFO L93 Difference]: Finished difference Result 1717 states and 2468 transitions. [2023-12-16 01:08:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 01:08:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-16 01:08:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:44,699 INFO L225 Difference]: With dead ends: 1717 [2023-12-16 01:08:44,699 INFO L226 Difference]: Without dead ends: 1455 [2023-12-16 01:08:44,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 01:08:44,702 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2725 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:44,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 1446 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:08:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-12-16 01:08:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1302. [2023-12-16 01:08:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1028 states have (on average 1.4231517509727627) internal successors, (1463), 1052 states have internal predecessors, (1463), 146 states have call successors, (146), 112 states have call predecessors, (146), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2023-12-16 01:08:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1787 transitions. [2023-12-16 01:08:44,762 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1787 transitions. Word has length 58 [2023-12-16 01:08:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:44,762 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 1787 transitions. [2023-12-16 01:08:44,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-16 01:08:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1787 transitions. [2023-12-16 01:08:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:08:44,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:44,763 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 01:08:44,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:08:44,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:44,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1595237125, now seen corresponding path program 1 times [2023-12-16 01:08:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443039329] [2023-12-16 01:08:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:44,854 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 01:08:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443039329] [2023-12-16 01:08:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443039329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:08:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391375385] [2023-12-16 01:08:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:08:44,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:08:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:08:44,856 INFO L87 Difference]: Start difference. First operand 1302 states and 1787 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 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 01:08:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:45,685 INFO L93 Difference]: Finished difference Result 2537 states and 3443 transitions. [2023-12-16 01:08:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 01:08:45,686 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), 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 59 [2023-12-16 01:08:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:45,690 INFO L225 Difference]: With dead ends: 2537 [2023-12-16 01:08:45,691 INFO L226 Difference]: Without dead ends: 1458 [2023-12-16 01:08:45,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:08:45,693 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 389 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:45,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1687 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:08:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-12-16 01:08:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1326. [2023-12-16 01:08:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1046 states have (on average 1.4082217973231357) internal successors, (1473), 1070 states have internal predecessors, (1473), 146 states have call successors, (146), 112 states have call predecessors, (146), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2023-12-16 01:08:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1803 transitions. [2023-12-16 01:08:45,805 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1803 transitions. Word has length 59 [2023-12-16 01:08:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:45,806 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1803 transitions. [2023-12-16 01:08:45,807 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), 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 01:08:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1803 transitions. [2023-12-16 01:08:45,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:08:45,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:45,808 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 01:08:45,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:08:45,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:45,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 327990909, now seen corresponding path program 1 times [2023-12-16 01:08:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662214725] [2023-12-16 01:08:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,041 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 01:08:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662214725] [2023-12-16 01:08:46,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662214725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:46,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:46,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:08:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013507104] [2023-12-16 01:08:46,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:08:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:08:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:08:46,043 INFO L87 Difference]: Start difference. First operand 1326 states and 1803 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 01:08:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:46,796 INFO L93 Difference]: Finished difference Result 2574 states and 3404 transitions. [2023-12-16 01:08:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 01:08:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 59 [2023-12-16 01:08:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:46,803 INFO L225 Difference]: With dead ends: 2574 [2023-12-16 01:08:46,803 INFO L226 Difference]: Without dead ends: 1678 [2023-12-16 01:08:46,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-16 01:08:46,806 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1120 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:46,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1034 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:08:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-12-16 01:08:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1271. [2023-12-16 01:08:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1007 states have (on average 1.4061569016881827) internal successors, (1416), 1026 states have internal predecessors, (1416), 140 states have call successors, (140), 107 states have call predecessors, (140), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2023-12-16 01:08:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1725 transitions. [2023-12-16 01:08:46,870 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1725 transitions. Word has length 59 [2023-12-16 01:08:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:46,870 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1725 transitions. [2023-12-16 01:08:46,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 01:08:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1725 transitions. [2023-12-16 01:08:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:08:46,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:46,871 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 01:08:46,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:08:46,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:46,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash 546845627, now seen corresponding path program 1 times [2023-12-16 01:08:46,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:46,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572852781] [2023-12-16 01:08:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:46,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:46,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572852781] [2023-12-16 01:08:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572852781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:46,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:46,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041696119] [2023-12-16 01:08:46,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:46,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:46,959 INFO L87 Difference]: Start difference. First operand 1271 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:47,591 INFO L93 Difference]: Finished difference Result 3443 states and 4561 transitions. [2023-12-16 01:08:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 01:08:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-16 01:08:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:47,601 INFO L225 Difference]: With dead ends: 3443 [2023-12-16 01:08:47,601 INFO L226 Difference]: Without dead ends: 2396 [2023-12-16 01:08:47,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:08:47,607 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1107 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:47,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 839 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:08:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-12-16 01:08:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2280. [2023-12-16 01:08:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1757 states have (on average 1.3392145702902676) internal successors, (2353), 1800 states have internal predecessors, (2353), 270 states have call successors, (270), 206 states have call predecessors, (270), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2023-12-16 01:08:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3004 transitions. [2023-12-16 01:08:47,711 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3004 transitions. Word has length 59 [2023-12-16 01:08:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:47,713 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3004 transitions. [2023-12-16 01:08:47,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:08:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3004 transitions. [2023-12-16 01:08:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 01:08:47,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:47,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:47,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:08:47,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 455283125, now seen corresponding path program 1 times [2023-12-16 01:08:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455722891] [2023-12-16 01:08:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:47,781 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 01:08:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455722891] [2023-12-16 01:08:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455722891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:08:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714317083] [2023-12-16 01:08:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:47,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:08:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:08:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:08:47,782 INFO L87 Difference]: Start difference. First operand 2280 states and 3004 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:08:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:48,352 INFO L93 Difference]: Finished difference Result 5422 states and 7060 transitions. [2023-12-16 01:08:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 01:08:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-16 01:08:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:48,363 INFO L225 Difference]: With dead ends: 5422 [2023-12-16 01:08:48,364 INFO L226 Difference]: Without dead ends: 3371 [2023-12-16 01:08:48,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:08:48,368 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 774 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:48,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 818 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:08:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2023-12-16 01:08:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3050. [2023-12-16 01:08:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 2338 states have (on average 1.322070145423439) internal successors, (3091), 2388 states have internal predecessors, (3091), 366 states have call successors, (366), 286 states have call predecessors, (366), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2023-12-16 01:08:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 3957 transitions. [2023-12-16 01:08:48,492 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 3957 transitions. Word has length 60 [2023-12-16 01:08:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:48,492 INFO L495 AbstractCegarLoop]: Abstraction has 3050 states and 3957 transitions. [2023-12-16 01:08:48,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:08:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 3957 transitions. [2023-12-16 01:08:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 01:08:48,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:48,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:08:48,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:48,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1180510132, now seen corresponding path program 1 times [2023-12-16 01:08:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118666225] [2023-12-16 01:08:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:48,547 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 01:08:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:48,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118666225] [2023-12-16 01:08:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118666225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:08:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080898042] [2023-12-16 01:08:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:08:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:08:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:08:48,549 INFO L87 Difference]: Start difference. First operand 3050 states and 3957 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:08:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:49,051 INFO L93 Difference]: Finished difference Result 6740 states and 8660 transitions. [2023-12-16 01:08:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 01:08:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-16 01:08:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:49,065 INFO L225 Difference]: With dead ends: 6740 [2023-12-16 01:08:49,065 INFO L226 Difference]: Without dead ends: 3917 [2023-12-16 01:08:49,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:08:49,072 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1085 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:49,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 688 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:08:49,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2023-12-16 01:08:49,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3575. [2023-12-16 01:08:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2743 states have (on average 1.3142544659132336) internal successors, (3605), 2797 states have internal predecessors, (3605), 425 states have call successors, (425), 336 states have call predecessors, (425), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2023-12-16 01:08:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4612 transitions. [2023-12-16 01:08:49,245 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4612 transitions. Word has length 66 [2023-12-16 01:08:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:49,245 INFO L495 AbstractCegarLoop]: Abstraction has 3575 states and 4612 transitions. [2023-12-16 01:08:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:08:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4612 transitions. [2023-12-16 01:08:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 01:08:49,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:49,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:08:49,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:49,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1719551705, now seen corresponding path program 1 times [2023-12-16 01:08:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385828349] [2023-12-16 01:08:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385828349] [2023-12-16 01:08:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385828349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673400006] [2023-12-16 01:08:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:49,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:49,305 INFO L87 Difference]: Start difference. First operand 3575 states and 4612 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 01:08:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:49,965 INFO L93 Difference]: Finished difference Result 4683 states and 5994 transitions. [2023-12-16 01:08:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 01:08:49,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-16 01:08:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:49,980 INFO L225 Difference]: With dead ends: 4683 [2023-12-16 01:08:49,981 INFO L226 Difference]: Without dead ends: 4680 [2023-12-16 01:08:49,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:08:49,983 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1284 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:49,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 857 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:08:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2023-12-16 01:08:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4002. [2023-12-16 01:08:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 3060 states have (on average 1.304248366013072) internal successors, (3991), 3118 states have internal predecessors, (3991), 478 states have call successors, (478), 380 states have call predecessors, (478), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2023-12-16 01:08:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5133 transitions. [2023-12-16 01:08:50,187 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5133 transitions. Word has length 67 [2023-12-16 01:08:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:50,187 INFO L495 AbstractCegarLoop]: Abstraction has 4002 states and 5133 transitions. [2023-12-16 01:08:50,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 01:08:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5133 transitions. [2023-12-16 01:08:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 01:08:50,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:50,188 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:50,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:08:50,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:50,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1765467294, now seen corresponding path program 1 times [2023-12-16 01:08:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330053416] [2023-12-16 01:08:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330053416] [2023-12-16 01:08:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330053416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:08:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616751260] [2023-12-16 01:08:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:08:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:08:50,277 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 01:08:50,284 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 01:08:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:50,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 01:08:50,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:08:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:50,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:08:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616751260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:08:50,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:08:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-16 01:08:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966669764] [2023-12-16 01:08:50,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:08:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:08:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:08:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:08:50,764 INFO L87 Difference]: Start difference. First operand 4002 states and 5133 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 01:08:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:52,183 INFO L93 Difference]: Finished difference Result 8209 states and 10407 transitions. [2023-12-16 01:08:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 01:08:52,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-16 01:08:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:52,216 INFO L225 Difference]: With dead ends: 8209 [2023-12-16 01:08:52,216 INFO L226 Difference]: Without dead ends: 8206 [2023-12-16 01:08:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-12-16 01:08:52,220 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1303 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:52,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1588 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:08:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2023-12-16 01:08:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 7181. [2023-12-16 01:08:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7181 states, 5472 states have (on average 1.2905701754385965) internal successors, (7062), 5574 states have internal predecessors, (7062), 857 states have call successors, (857), 694 states have call predecessors, (857), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2023-12-16 01:08:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7181 states to 7181 states and 9120 transitions. [2023-12-16 01:08:52,798 INFO L78 Accepts]: Start accepts. Automaton has 7181 states and 9120 transitions. Word has length 68 [2023-12-16 01:08:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:52,799 INFO L495 AbstractCegarLoop]: Abstraction has 7181 states and 9120 transitions. [2023-12-16 01:08:52,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 01:08:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7181 states and 9120 transitions. [2023-12-16 01:08:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 01:08:52,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:52,800 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:52,819 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 01:08:53,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 01:08:53,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:53,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1942506137, now seen corresponding path program 2 times [2023-12-16 01:08:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312210466] [2023-12-16 01:08:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:53,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312210466] [2023-12-16 01:08:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312210466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:53,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:53,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:08:53,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744178687] [2023-12-16 01:08:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:08:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:08:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:08:53,051 INFO L87 Difference]: Start difference. First operand 7181 states and 9120 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 01:08:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:53,672 INFO L93 Difference]: Finished difference Result 9691 states and 12332 transitions. [2023-12-16 01:08:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:08:53,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-16 01:08:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:53,682 INFO L225 Difference]: With dead ends: 9691 [2023-12-16 01:08:53,682 INFO L226 Difference]: Without dead ends: 3986 [2023-12-16 01:08:53,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:08:53,690 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 981 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:53,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 720 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:08:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2023-12-16 01:08:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 2941. [2023-12-16 01:08:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2264 states have (on average 1.2901943462897527) internal successors, (2921), 2300 states have internal predecessors, (2921), 350 states have call successors, (350), 276 states have call predecessors, (350), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2023-12-16 01:08:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 3731 transitions. [2023-12-16 01:08:53,829 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 3731 transitions. Word has length 71 [2023-12-16 01:08:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 2941 states and 3731 transitions. [2023-12-16 01:08:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 01:08:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 3731 transitions. [2023-12-16 01:08:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 01:08:53,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:53,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:53,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:08:53,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:53,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 854652747, now seen corresponding path program 1 times [2023-12-16 01:08:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398449177] [2023-12-16 01:08:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 01:08:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:08:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398449177] [2023-12-16 01:08:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398449177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:53,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:53,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:08:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765067141] [2023-12-16 01:08:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:53,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:08:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:53,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:08:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:08:53,912 INFO L87 Difference]: Start difference. First operand 2941 states and 3731 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:08:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:54,956 INFO L93 Difference]: Finished difference Result 8543 states and 10741 transitions. [2023-12-16 01:08:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 01:08:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-16 01:08:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:54,974 INFO L225 Difference]: With dead ends: 8543 [2023-12-16 01:08:54,975 INFO L226 Difference]: Without dead ends: 5030 [2023-12-16 01:08:54,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-12-16 01:08:54,982 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1083 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:54,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1308 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:08:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2023-12-16 01:08:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 4683. [2023-12-16 01:08:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 3551 states have (on average 1.2562658406082794) internal successors, (4461), 3618 states have internal predecessors, (4461), 568 states have call successors, (568), 448 states have call predecessors, (568), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2023-12-16 01:08:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 5883 transitions. [2023-12-16 01:08:55,227 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 5883 transitions. Word has length 76 [2023-12-16 01:08:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:55,227 INFO L495 AbstractCegarLoop]: Abstraction has 4683 states and 5883 transitions. [2023-12-16 01:08:55,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:08:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 5883 transitions. [2023-12-16 01:08:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 01:08:55,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:55,229 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:08:55,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -91040578, now seen corresponding path program 1 times [2023-12-16 01:08:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068881518] [2023-12-16 01:08:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:08:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:08:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:08:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:08:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:08:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:08:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:08:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:08:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068881518] [2023-12-16 01:08:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068881518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:55,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:08:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216003036] [2023-12-16 01:08:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:08:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:08:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:08:55,323 INFO L87 Difference]: Start difference. First operand 4683 states and 5883 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:08:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:56,592 INFO L93 Difference]: Finished difference Result 8711 states and 10818 transitions. [2023-12-16 01:08:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 01:08:56,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-16 01:08:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:56,635 INFO L225 Difference]: With dead ends: 8711 [2023-12-16 01:08:56,635 INFO L226 Difference]: Without dead ends: 4778 [2023-12-16 01:08:56,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-16 01:08:56,643 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 2003 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:56,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 1106 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:08:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2023-12-16 01:08:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4412. [2023-12-16 01:08:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 3328 states have (on average 1.2328725961538463) internal successors, (4103), 3397 states have internal predecessors, (4103), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2023-12-16 01:08:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 5386 transitions. [2023-12-16 01:08:56,884 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 5386 transitions. Word has length 86 [2023-12-16 01:08:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:56,884 INFO L495 AbstractCegarLoop]: Abstraction has 4412 states and 5386 transitions. [2023-12-16 01:08:56,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:08:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 5386 transitions. [2023-12-16 01:08:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:08:56,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:56,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:08:56,886 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:56,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1641909896, now seen corresponding path program 1 times [2023-12-16 01:08:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:56,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519175213] [2023-12-16 01:08:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:08:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:08:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:08:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:08:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:56,979 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 01:08:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519175213] [2023-12-16 01:08:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519175213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296731142] [2023-12-16 01:08:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:56,981 INFO L87 Difference]: Start difference. First operand 4412 states and 5386 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:08:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:58,521 INFO L93 Difference]: Finished difference Result 4717 states and 5893 transitions. [2023-12-16 01:08:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 01:08:58,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:08:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:58,529 INFO L225 Difference]: With dead ends: 4717 [2023-12-16 01:08:58,530 INFO L226 Difference]: Without dead ends: 4512 [2023-12-16 01:08:58,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:08:58,531 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 775 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:58,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1045 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:08:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2023-12-16 01:08:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4414. [2023-12-16 01:08:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 3330 states have (on average 1.2324324324324325) internal successors, (4104), 3399 states have internal predecessors, (4104), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2023-12-16 01:08:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 5387 transitions. [2023-12-16 01:08:58,855 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 5387 transitions. Word has length 102 [2023-12-16 01:08:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:58,855 INFO L495 AbstractCegarLoop]: Abstraction has 4414 states and 5387 transitions. [2023-12-16 01:08:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:08:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 5387 transitions. [2023-12-16 01:08:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:08:58,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:58,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:08:58,859 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:58,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -194478584, now seen corresponding path program 1 times [2023-12-16 01:08:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683662459] [2023-12-16 01:08:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:08:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:08:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:08:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:08:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:58,975 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 01:08:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683662459] [2023-12-16 01:08:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683662459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:58,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669329564] [2023-12-16 01:08:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:58,978 INFO L87 Difference]: Start difference. First operand 4414 states and 5387 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:00,988 INFO L93 Difference]: Finished difference Result 4988 states and 6330 transitions. [2023-12-16 01:09:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:09:00,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:00,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:00,999 INFO L225 Difference]: With dead ends: 4988 [2023-12-16 01:09:01,007 INFO L226 Difference]: Without dead ends: 4783 [2023-12-16 01:09:01,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:09:01,013 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1000 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:01,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1525 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:09:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-12-16 01:09:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4628. [2023-12-16 01:09:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 3519 states have (on average 1.253481102585962) internal successors, (4411), 3590 states have internal predecessors, (4411), 555 states have call successors, (555), 436 states have call predecessors, (555), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2023-12-16 01:09:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 5735 transitions. [2023-12-16 01:09:01,379 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 5735 transitions. Word has length 102 [2023-12-16 01:09:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:01,379 INFO L495 AbstractCegarLoop]: Abstraction has 4628 states and 5735 transitions. [2023-12-16 01:09:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 5735 transitions. [2023-12-16 01:09:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:01,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:01,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:01,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:09:01,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:01,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2141913926, now seen corresponding path program 1 times [2023-12-16 01:09:01,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:01,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809325029] [2023-12-16 01:09:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:01,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:01,501 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 01:09:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809325029] [2023-12-16 01:09:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809325029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893276988] [2023-12-16 01:09:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:01,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:01,503 INFO L87 Difference]: Start difference. First operand 4628 states and 5735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:03,528 INFO L93 Difference]: Finished difference Result 5712 states and 7502 transitions. [2023-12-16 01:09:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:09:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:03,539 INFO L225 Difference]: With dead ends: 5712 [2023-12-16 01:09:03,539 INFO L226 Difference]: Without dead ends: 5295 [2023-12-16 01:09:03,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:09:03,542 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1025 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:03,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1436 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:09:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2023-12-16 01:09:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5020. [2023-12-16 01:09:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 3867 states have (on average 1.2841996379622447) internal successors, (4966), 3940 states have internal predecessors, (4966), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2023-12-16 01:09:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 6360 transitions. [2023-12-16 01:09:03,940 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 6360 transitions. Word has length 102 [2023-12-16 01:09:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 5020 states and 6360 transitions. [2023-12-16 01:09:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 6360 transitions. [2023-12-16 01:09:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:03,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:03,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:09:03,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:03,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash -276570552, now seen corresponding path program 1 times [2023-12-16 01:09:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:03,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869418358] [2023-12-16 01:09:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:04,049 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 01:09:04,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869418358] [2023-12-16 01:09:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869418358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:04,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:04,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:04,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662557502] [2023-12-16 01:09:04,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:04,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:04,051 INFO L87 Difference]: Start difference. First operand 5020 states and 6360 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:05,398 INFO L93 Difference]: Finished difference Result 6109 states and 8150 transitions. [2023-12-16 01:09:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:09:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:05,410 INFO L225 Difference]: With dead ends: 6109 [2023-12-16 01:09:05,410 INFO L226 Difference]: Without dead ends: 5298 [2023-12-16 01:09:05,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:09:05,413 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 816 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:05,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 880 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:09:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2023-12-16 01:09:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 5020. [2023-12-16 01:09:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 3867 states have (on average 1.282906645978795) internal successors, (4961), 3940 states have internal predecessors, (4961), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2023-12-16 01:09:05,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 6355 transitions. [2023-12-16 01:09:05,806 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 6355 transitions. Word has length 102 [2023-12-16 01:09:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:05,806 INFO L495 AbstractCegarLoop]: Abstraction has 5020 states and 6355 transitions. [2023-12-16 01:09:05,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 6355 transitions. [2023-12-16 01:09:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:05,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:05,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:09:05,809 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:05,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2139265798, now seen corresponding path program 1 times [2023-12-16 01:09:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334493243] [2023-12-16 01:09:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:05,948 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 01:09:05,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:05,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334493243] [2023-12-16 01:09:05,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334493243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:05,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441211416] [2023-12-16 01:09:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:05,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:05,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:05,950 INFO L87 Difference]: Start difference. First operand 5020 states and 6355 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:07,242 INFO L93 Difference]: Finished difference Result 6105 states and 8129 transitions. [2023-12-16 01:09:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:09:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:07,253 INFO L225 Difference]: With dead ends: 6105 [2023-12-16 01:09:07,254 INFO L226 Difference]: Without dead ends: 5294 [2023-12-16 01:09:07,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:09:07,259 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 814 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:07,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 880 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:09:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2023-12-16 01:09:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5020. [2023-12-16 01:09:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 3867 states have (on average 1.2816136539953453) internal successors, (4956), 3940 states have internal predecessors, (4956), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2023-12-16 01:09:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 6350 transitions. [2023-12-16 01:09:07,664 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 6350 transitions. Word has length 102 [2023-12-16 01:09:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:07,664 INFO L495 AbstractCegarLoop]: Abstraction has 5020 states and 6350 transitions. [2023-12-16 01:09:07,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 6350 transitions. [2023-12-16 01:09:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:07,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:07,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:07,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:09:07,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:07,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -830845304, now seen corresponding path program 1 times [2023-12-16 01:09:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115923109] [2023-12-16 01:09:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:07,767 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 01:09:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115923109] [2023-12-16 01:09:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115923109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273470722] [2023-12-16 01:09:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:07,769 INFO L87 Difference]: Start difference. First operand 5020 states and 6350 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:09,016 INFO L93 Difference]: Finished difference Result 6100 states and 8106 transitions. [2023-12-16 01:09:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:09:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:09,027 INFO L225 Difference]: With dead ends: 6100 [2023-12-16 01:09:09,027 INFO L226 Difference]: Without dead ends: 5289 [2023-12-16 01:09:09,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:09:09,031 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 945 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:09,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 730 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:09:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2023-12-16 01:09:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5020. [2023-12-16 01:09:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 3867 states have (on average 1.2803206620118954) internal successors, (4951), 3940 states have internal predecessors, (4951), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2023-12-16 01:09:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 6345 transitions. [2023-12-16 01:09:09,536 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 6345 transitions. Word has length 102 [2023-12-16 01:09:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 5020 states and 6345 transitions. [2023-12-16 01:09:09,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 6345 transitions. [2023-12-16 01:09:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:09,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:09,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:09,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:09:09,542 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:09,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash 735912646, now seen corresponding path program 1 times [2023-12-16 01:09:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341872978] [2023-12-16 01:09:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:09,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:09,653 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 01:09:09,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341872978] [2023-12-16 01:09:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341872978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:09,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:09,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783142862] [2023-12-16 01:09:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:09,654 INFO L87 Difference]: Start difference. First operand 5020 states and 6345 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:11,788 INFO L93 Difference]: Finished difference Result 7109 states and 9693 transitions. [2023-12-16 01:09:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:09:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:11,800 INFO L225 Difference]: With dead ends: 7109 [2023-12-16 01:09:11,800 INFO L226 Difference]: Without dead ends: 6300 [2023-12-16 01:09:11,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:09:11,802 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 991 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:11,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1524 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 01:09:11,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2023-12-16 01:09:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 5815. [2023-12-16 01:09:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5815 states, 4574 states have (on average 1.324879755137735) internal successors, (6060), 4651 states have internal predecessors, (6060), 645 states have call successors, (645), 472 states have call predecessors, (645), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2023-12-16 01:09:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 7600 transitions. [2023-12-16 01:09:12,218 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 7600 transitions. Word has length 102 [2023-12-16 01:09:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 5815 states and 7600 transitions. [2023-12-16 01:09:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 7600 transitions. [2023-12-16 01:09:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:12,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:12,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:09:12,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -321925432, now seen corresponding path program 1 times [2023-12-16 01:09:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082858337] [2023-12-16 01:09:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:12,381 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 01:09:12,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:12,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082858337] [2023-12-16 01:09:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082858337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:12,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466227296] [2023-12-16 01:09:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:12,384 INFO L87 Difference]: Start difference. First operand 5815 states and 7600 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:14,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:14,693 INFO L93 Difference]: Finished difference Result 10600 states and 15250 transitions. [2023-12-16 01:09:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:09:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:14,738 INFO L225 Difference]: With dead ends: 10600 [2023-12-16 01:09:14,738 INFO L226 Difference]: Without dead ends: 8996 [2023-12-16 01:09:14,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:09:14,743 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1053 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:14,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1517 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 01:09:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2023-12-16 01:09:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7396. [2023-12-16 01:09:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 5987 states have (on average 1.3829964924002005) internal successors, (8280), 6072 states have internal predecessors, (8280), 757 states have call successors, (757), 520 states have call predecessors, (757), 650 states have return successors, (1077), 821 states have call predecessors, (1077), 754 states have call successors, (1077) [2023-12-16 01:09:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 10114 transitions. [2023-12-16 01:09:15,246 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 10114 transitions. Word has length 102 [2023-12-16 01:09:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:15,246 INFO L495 AbstractCegarLoop]: Abstraction has 7396 states and 10114 transitions. [2023-12-16 01:09:15,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 10114 transitions. [2023-12-16 01:09:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:15,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:15,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:15,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 01:09:15,250 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:15,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1464427898, now seen corresponding path program 1 times [2023-12-16 01:09:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016804773] [2023-12-16 01:09:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:15,340 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 01:09:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016804773] [2023-12-16 01:09:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016804773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101094311] [2023-12-16 01:09:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:15,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:15,342 INFO L87 Difference]: Start difference. First operand 7396 states and 10114 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:16,696 INFO L93 Difference]: Finished difference Result 11510 states and 16783 transitions. [2023-12-16 01:09:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:09:16,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:16,714 INFO L225 Difference]: With dead ends: 11510 [2023-12-16 01:09:16,715 INFO L226 Difference]: Without dead ends: 8323 [2023-12-16 01:09:16,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:09:16,724 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 814 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 879 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:09:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8323 states. [2023-12-16 01:09:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8323 to 7396. [2023-12-16 01:09:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 5987 states have (on average 1.380157006848171) internal successors, (8263), 6072 states have internal predecessors, (8263), 757 states have call successors, (757), 520 states have call predecessors, (757), 650 states have return successors, (1077), 821 states have call predecessors, (1077), 754 states have call successors, (1077) [2023-12-16 01:09:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 10097 transitions. [2023-12-16 01:09:17,251 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 10097 transitions. Word has length 102 [2023-12-16 01:09:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:17,251 INFO L495 AbstractCegarLoop]: Abstraction has 7396 states and 10097 transitions. [2023-12-16 01:09:17,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 10097 transitions. [2023-12-16 01:09:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:17,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:17,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:17,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 01:09:17,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:17,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -625394236, now seen corresponding path program 1 times [2023-12-16 01:09:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266367481] [2023-12-16 01:09:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:17,345 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 01:09:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266367481] [2023-12-16 01:09:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266367481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108904569] [2023-12-16 01:09:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:17,347 INFO L87 Difference]: Start difference. First operand 7396 states and 10097 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:19,459 INFO L93 Difference]: Finished difference Result 16223 states and 24246 transitions. [2023-12-16 01:09:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:09:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:19,488 INFO L225 Difference]: With dead ends: 16223 [2023-12-16 01:09:19,489 INFO L226 Difference]: Without dead ends: 13038 [2023-12-16 01:09:19,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:09:19,499 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1136 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:19,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1433 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:09:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13038 states. [2023-12-16 01:09:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13038 to 10589. [2023-12-16 01:09:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 8852 states have (on average 1.4402394938996836) internal successors, (12749), 8953 states have internal predecessors, (12749), 973 states have call successors, (973), 616 states have call predecessors, (973), 762 states have return successors, (1487), 1053 states have call predecessors, (1487), 970 states have call successors, (1487) [2023-12-16 01:09:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 15209 transitions. [2023-12-16 01:09:20,176 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 15209 transitions. Word has length 102 [2023-12-16 01:09:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 10589 states and 15209 transitions. [2023-12-16 01:09:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 15209 transitions. [2023-12-16 01:09:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:20,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:20,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:20,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 01:09:20,181 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:20,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -598328634, now seen corresponding path program 1 times [2023-12-16 01:09:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999154871] [2023-12-16 01:09:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:20,275 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 01:09:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:20,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999154871] [2023-12-16 01:09:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999154871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:20,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:20,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43449288] [2023-12-16 01:09:20,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:20,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:20,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:20,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:20,276 INFO L87 Difference]: Start difference. First operand 10589 states and 15209 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:22,681 INFO L93 Difference]: Finished difference Result 27706 states and 42816 transitions. [2023-12-16 01:09:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:09:22,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:22,740 INFO L225 Difference]: With dead ends: 27706 [2023-12-16 01:09:22,740 INFO L226 Difference]: Without dead ends: 21328 [2023-12-16 01:09:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:09:22,764 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1091 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:22,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1516 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:09:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21328 states. [2023-12-16 01:09:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21328 to 16975. [2023-12-16 01:09:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16975 states, 14598 states have (on average 1.4901356350184958) internal successors, (21753), 14731 states have internal predecessors, (21753), 1389 states have call successors, (1389), 808 states have call predecessors, (1389), 986 states have return successors, (2453), 1501 states have call predecessors, (2453), 1386 states have call successors, (2453) [2023-12-16 01:09:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16975 states to 16975 states and 25595 transitions. [2023-12-16 01:09:23,774 INFO L78 Accepts]: Start accepts. Automaton has 16975 states and 25595 transitions. Word has length 102 [2023-12-16 01:09:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:23,774 INFO L495 AbstractCegarLoop]: Abstraction has 16975 states and 25595 transitions. [2023-12-16 01:09:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16975 states and 25595 transitions. [2023-12-16 01:09:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:23,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:23,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 01:09:23,783 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:23,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1619301764, now seen corresponding path program 1 times [2023-12-16 01:09:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437849755] [2023-12-16 01:09:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:23,868 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 01:09:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437849755] [2023-12-16 01:09:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437849755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:23,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91452365] [2023-12-16 01:09:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:23,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:23,870 INFO L87 Difference]: Start difference. First operand 16975 states and 25595 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:25,471 INFO L93 Difference]: Finished difference Result 32988 states and 52017 transitions. [2023-12-16 01:09:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:09:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:25,519 INFO L225 Difference]: With dead ends: 32988 [2023-12-16 01:09:25,519 INFO L226 Difference]: Without dead ends: 20222 [2023-12-16 01:09:25,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:09:25,539 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 947 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:25,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 729 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:09:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20222 states. [2023-12-16 01:09:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20222 to 16975. [2023-12-16 01:09:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16975 states, 14598 states have (on average 1.4856829702699) internal successors, (21688), 14731 states have internal predecessors, (21688), 1389 states have call successors, (1389), 808 states have call predecessors, (1389), 986 states have return successors, (2453), 1501 states have call predecessors, (2453), 1386 states have call successors, (2453) [2023-12-16 01:09:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16975 states to 16975 states and 25530 transitions. [2023-12-16 01:09:26,537 INFO L78 Accepts]: Start accepts. Automaton has 16975 states and 25530 transitions. Word has length 102 [2023-12-16 01:09:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:26,537 INFO L495 AbstractCegarLoop]: Abstraction has 16975 states and 25530 transitions. [2023-12-16 01:09:26,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 16975 states and 25530 transitions. [2023-12-16 01:09:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:26,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:26,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:26,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 01:09:26,546 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:26,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -941561082, now seen corresponding path program 1 times [2023-12-16 01:09:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:26,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159702707] [2023-12-16 01:09:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:26,641 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 01:09:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159702707] [2023-12-16 01:09:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159702707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:26,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840054506] [2023-12-16 01:09:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:26,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:26,643 INFO L87 Difference]: Start difference. First operand 16975 states and 25530 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:29,610 INFO L93 Difference]: Finished difference Result 49360 states and 78170 transitions. [2023-12-16 01:09:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:09:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:29,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:29,709 INFO L225 Difference]: With dead ends: 49360 [2023-12-16 01:09:29,710 INFO L226 Difference]: Without dead ends: 36596 [2023-12-16 01:09:29,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:09:29,737 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1015 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:29,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1515 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:09:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36596 states. [2023-12-16 01:09:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36596 to 29811. [2023-12-16 01:09:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29811 states, 26186 states have (on average 1.5183685939051401) internal successors, (39760), 26383 states have internal predecessors, (39760), 2189 states have call successors, (2189), 1192 states have call predecessors, (2189), 1434 states have return successors, (4839), 2365 states have call predecessors, (4839), 2186 states have call successors, (4839) [2023-12-16 01:09:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29811 states to 29811 states and 46788 transitions. [2023-12-16 01:09:31,516 INFO L78 Accepts]: Start accepts. Automaton has 29811 states and 46788 transitions. Word has length 102 [2023-12-16 01:09:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:31,516 INFO L495 AbstractCegarLoop]: Abstraction has 29811 states and 46788 transitions. [2023-12-16 01:09:31,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 01:09:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29811 states and 46788 transitions. [2023-12-16 01:09:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:31,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:31,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 01:09:31,532 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -54338236, now seen corresponding path program 1 times [2023-12-16 01:09:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635254178] [2023-12-16 01:09:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:31,628 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 01:09:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635254178] [2023-12-16 01:09:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635254178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:31,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:31,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:09:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197094800] [2023-12-16 01:09:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:09:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:09:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:09:31,629 INFO L87 Difference]: Start difference. First operand 29811 states and 46788 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 01:09:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:09:33,954 INFO L93 Difference]: Finished difference Result 65890 states and 105161 transitions. [2023-12-16 01:09:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 01:09:33,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2023-12-16 01:09:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:09:34,106 INFO L225 Difference]: With dead ends: 65890 [2023-12-16 01:09:34,106 INFO L226 Difference]: Without dead ends: 40290 [2023-12-16 01:09:34,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:09:34,139 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 466 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:34,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 992 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:09:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40290 states. [2023-12-16 01:09:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40290 to 30067. [2023-12-16 01:09:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30067 states, 26442 states have (on average 1.5133499735269647) internal successors, (40016), 26639 states have internal predecessors, (40016), 2189 states have call successors, (2189), 1192 states have call predecessors, (2189), 1434 states have return successors, (4839), 2365 states have call predecessors, (4839), 2186 states have call successors, (4839) [2023-12-16 01:09:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30067 states to 30067 states and 47044 transitions. [2023-12-16 01:09:35,944 INFO L78 Accepts]: Start accepts. Automaton has 30067 states and 47044 transitions. Word has length 102 [2023-12-16 01:09:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:09:35,944 INFO L495 AbstractCegarLoop]: Abstraction has 30067 states and 47044 transitions. [2023-12-16 01:09:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 01:09:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 30067 states and 47044 transitions. [2023-12-16 01:09:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 01:09:35,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:09:35,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:35,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 01:09:35,958 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:09:35,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:09:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash -786305662, now seen corresponding path program 1 times [2023-12-16 01:09:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:09:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984213326] [2023-12-16 01:09:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:09:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:09:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:09:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 01:09:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 01:09:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 01:09:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 01:09:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:09:36,074 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 01:09:36,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:09:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984213326] [2023-12-16 01:09:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984213326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:09:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:09:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:09:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88317181] [2023-12-16 01:09:36,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:09:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:09:36,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:09:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:09:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:09:36,075 INFO L87 Difference]: Start difference. First operand 30067 states and 47044 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) Received shutdown request... [2023-12-16 01:09:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 01:09:37,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-16 01:09:37,857 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1033 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:09:37,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 574 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:09:37,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 01:09:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 01:09:37,859 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (30067states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (30869 states constructed, input type IntersectNwa). [2023-12-16 01:09:37,860 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 01:09:37,863 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:09:37,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:09:37,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:09:37 BoogieIcfgContainer [2023-12-16 01:09:37,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:09:37,872 INFO L158 Benchmark]: Toolchain (without parser) took 58607.43ms. Allocated memory was 263.2MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 213.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 892.3MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,872 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:09:37,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.65ms. Allocated memory is still 263.2MB. Free memory was 212.7MB in the beginning and 190.7MB in the end (delta: 22.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.11ms. Allocated memory is still 263.2MB. Free memory was 190.7MB in the beginning and 186.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,872 INFO L158 Benchmark]: Boogie Preprocessor took 45.57ms. Allocated memory is still 263.2MB. Free memory was 186.8MB in the beginning and 182.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,874 INFO L158 Benchmark]: RCFGBuilder took 802.86ms. Allocated memory is still 263.2MB. Free memory was 182.3MB in the beginning and 186.2MB in the end (delta: -3.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,874 INFO L158 Benchmark]: TraceAbstraction took 57338.15ms. Allocated memory was 263.2MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 185.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 864.9MB. Max. memory is 8.0GB. [2023-12-16 01:09:37,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 366.65ms. Allocated memory is still 263.2MB. Free memory was 212.7MB in the beginning and 190.7MB in the end (delta: 22.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.11ms. Allocated memory is still 263.2MB. Free memory was 190.7MB in the beginning and 186.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.57ms. Allocated memory is still 263.2MB. Free memory was 186.8MB in the beginning and 182.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 802.86ms. Allocated memory is still 263.2MB. Free memory was 182.3MB in the beginning and 186.2MB in the end (delta: -3.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57338.15ms. Allocated memory was 263.2MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 185.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 864.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while NwaCegarLoop was constructing difference of abstraction (30067states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (30869 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 28). Cancelled while NwaCegarLoop was constructing difference of abstraction (30067states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (30869 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 309 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 57.3s, OverallIterations: 28, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 40.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30075 SdHoareTripleChecker+Valid, 22.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29482 mSDsluCounter, 31763 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24097 mSDsCounter, 4372 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38846 IncrementalHoareTripleChecker+Invalid, 43218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4372 mSolverCounterUnsat, 7666 mSDtfsCounter, 38846 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30067occurred in iteration=27, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 36457 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2443 NumberOfCodeBlocks, 2443 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2481 ConstructedInterpolants, 0 QuantifiedInterpolants, 7081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 30 InterpolantComputations, 27 PerfectInterpolantSequences, 43/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown