/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:37:26,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:37:26,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:37:26,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:37:26,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:37:26,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:37:26,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:37:26,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:37:26,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:37:26,493 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:37:26,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:37:26,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:37:26,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:37:26,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:37:26,495 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:37:26,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:37:26,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:37:26,495 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:37:26,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:37:26,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:37:26,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:37:26,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:37:26,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:37:26,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:37:26,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:37:26,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:37:26,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:37:26,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:37:26,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:37:26,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:37:26,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:37:26,505 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:37:26,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:37:26,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:37:26,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:37:26,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:37:26,858 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:37:26,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-12-19 01:37:27,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:37:28,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:37:28,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-12-19 01:37:28,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be7925399/27b4f9161c40463ca3285cf9d1b075f3/FLAGd59ad7750 [2023-12-19 01:37:28,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be7925399/27b4f9161c40463ca3285cf9d1b075f3 [2023-12-19 01:37:28,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:37:28,179 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:37:28,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:37:28,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:37:28,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:37:28,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ae91ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28, skipping insertion in model container [2023-12-19 01:37:28,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,226 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:37:28,347 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.12.cil-1.c[914,927] [2023-12-19 01:37:28,384 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.12.cil-1.c[7115,7128] [2023-12-19 01:37:28,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:37:28,529 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:37:28,537 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.12.cil-1.c[914,927] [2023-12-19 01:37:28,546 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.12.cil-1.c[7115,7128] [2023-12-19 01:37:28,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:37:28,608 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:37:28,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28 WrapperNode [2023-12-19 01:37:28,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:37:28,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:37:28,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:37:28,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:37:28,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,681 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1074 [2023-12-19 01:37:28,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:37:28,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:37:28,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:37:28,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:37:28,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,728 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:37:28,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:37:28,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:37:28,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:37:28,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:37:28,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (1/1) ... [2023-12-19 01:37:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:37:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:28,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:37:28,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:37:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:37:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:37:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:37:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:37:28,881 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:37:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:37:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:37:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:37:28,883 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:37:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:37:28,883 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:37:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:37:28,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:37:28,884 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:37:28,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:37:28,885 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:37:28,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:37:28,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:37:28,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:37:28,885 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:37:28,885 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:37:28,885 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:37:28,885 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:37:29,027 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:37:29,029 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:37:29,743 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:37:29,787 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:37:29,788 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-19 01:37:29,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:37:29 BoogieIcfgContainer [2023-12-19 01:37:29,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:37:29,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:37:29,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:37:29,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:37:29,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:37:28" (1/3) ... [2023-12-19 01:37:29,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2626a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:37:29, skipping insertion in model container [2023-12-19 01:37:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:28" (2/3) ... [2023-12-19 01:37:29,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2626a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:37:29, skipping insertion in model container [2023-12-19 01:37:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:37:29" (3/3) ... [2023-12-19 01:37:29,794 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2023-12-19 01:37:29,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:37:29,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:37:29,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:37:29,845 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;@756d80b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:37:29,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:37:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 387 states have (on average 1.7183462532299743) internal successors, (665), 395 states have internal predecessors, (665), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 01:37:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:29,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:29,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:29,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:29,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2145681840, now seen corresponding path program 1 times [2023-12-19 01:37:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:29,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140527913] [2023-12-19 01:37:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140527913] [2023-12-19 01:37:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140527913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:30,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:30,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:30,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871131795] [2023-12-19 01:37:30,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:30,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:30,338 INFO L87 Difference]: Start difference. First operand has 447 states, 387 states have (on average 1.7183462532299743) internal successors, (665), 395 states have internal predecessors, (665), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:37:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:31,389 INFO L93 Difference]: Finished difference Result 993 states and 1649 transitions. [2023-12-19 01:37:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:37:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:37:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:31,400 INFO L225 Difference]: With dead ends: 993 [2023-12-19 01:37:31,401 INFO L226 Difference]: Without dead ends: 566 [2023-12-19 01:37:31,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:37:31,407 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1138 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:31,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1537 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-19 01:37:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 529. [2023-12-19 01:37:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 452 states have (on average 1.586283185840708) internal successors, (717), 459 states have internal predecessors, (717), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-12-19 01:37:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 824 transitions. [2023-12-19 01:37:31,467 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 824 transitions. Word has length 58 [2023-12-19 01:37:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:31,467 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 824 transitions. [2023-12-19 01:37:31,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:37:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 824 transitions. [2023-12-19 01:37:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:31,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:31,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:37:31,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:31,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2015051792, now seen corresponding path program 1 times [2023-12-19 01:37:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299288183] [2023-12-19 01:37:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299288183] [2023-12-19 01:37:31,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299288183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:31,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:31,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162638006] [2023-12-19 01:37:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:31,619 INFO L87 Difference]: Start difference. First operand 529 states and 824 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:37:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:32,721 INFO L93 Difference]: Finished difference Result 849 states and 1274 transitions. [2023-12-19 01:37:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:37:32,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-19 01:37:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:32,726 INFO L225 Difference]: With dead ends: 849 [2023-12-19 01:37:32,726 INFO L226 Difference]: Without dead ends: 687 [2023-12-19 01:37:32,727 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 [2023-12-19 01:37:32,728 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1683 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:32,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 1720 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-19 01:37:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 617. [2023-12-19 01:37:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 520 states have (on average 1.5634615384615385) internal successors, (813), 529 states have internal predecessors, (813), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2023-12-19 01:37:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 950 transitions. [2023-12-19 01:37:32,763 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 950 transitions. Word has length 58 [2023-12-19 01:37:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:32,763 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 950 transitions. [2023-12-19 01:37:32,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:37:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 950 transitions. [2023-12-19 01:37:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:32,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:32,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:32,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:37:32,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:32,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash -351642802, now seen corresponding path program 1 times [2023-12-19 01:37:32,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:32,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610104256] [2023-12-19 01:37:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:32,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610104256] [2023-12-19 01:37:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610104256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:32,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774770147] [2023-12-19 01:37:32,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:32,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:32,878 INFO L87 Difference]: Start difference. First operand 617 states and 950 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:33,957 INFO L93 Difference]: Finished difference Result 893 states and 1339 transitions. [2023-12-19 01:37:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:37:33,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 01:37:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:33,960 INFO L225 Difference]: With dead ends: 893 [2023-12-19 01:37:33,960 INFO L226 Difference]: Without dead ends: 649 [2023-12-19 01:37:33,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:37:33,962 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 619 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:33,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 2493 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-19 01:37:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 621. [2023-12-19 01:37:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 523 states have (on average 1.5564053537284894) internal successors, (814), 532 states have internal predecessors, (814), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2023-12-19 01:37:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 952 transitions. [2023-12-19 01:37:33,986 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 952 transitions. Word has length 58 [2023-12-19 01:37:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:33,986 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 952 transitions. [2023-12-19 01:37:33,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 952 transitions. [2023-12-19 01:37:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:33,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:33,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:33,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:37:33,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:33,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1699341196, now seen corresponding path program 1 times [2023-12-19 01:37:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:33,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722434618] [2023-12-19 01:37:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:33,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:34,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722434618] [2023-12-19 01:37:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722434618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:34,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:37:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062756556] [2023-12-19 01:37:34,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:37:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:37:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:34,104 INFO L87 Difference]: Start difference. First operand 621 states and 952 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) [2023-12-19 01:37:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:35,439 INFO L93 Difference]: Finished difference Result 1845 states and 2650 transitions. [2023-12-19 01:37:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:37:35,439 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 [2023-12-19 01:37:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:35,445 INFO L225 Difference]: With dead ends: 1845 [2023-12-19 01:37:35,445 INFO L226 Difference]: Without dead ends: 1579 [2023-12-19 01:37:35,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:37:35,447 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3875 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:35,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3889 Valid, 1932 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:37:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-19 01:37:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1456. [2023-12-19 01:37:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1172 states have (on average 1.439419795221843) internal successors, (1687), 1196 states have internal predecessors, (1687), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2023-12-19 01:37:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2027 transitions. [2023-12-19 01:37:35,530 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2027 transitions. Word has length 58 [2023-12-19 01:37:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:35,530 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 2027 transitions. [2023-12-19 01:37:35,530 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) [2023-12-19 01:37:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2027 transitions. [2023-12-19 01:37:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:37:35,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:35,531 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] [2023-12-19 01:37:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:37:35,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:35,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -773396516, now seen corresponding path program 1 times [2023-12-19 01:37:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152785807] [2023-12-19 01:37:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:35,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:35,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152785807] [2023-12-19 01:37:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152785807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:35,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278427302] [2023-12-19 01:37:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:35,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:35,618 INFO L87 Difference]: Start difference. First operand 1456 states and 2027 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) [2023-12-19 01:37:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:36,553 INFO L93 Difference]: Finished difference Result 2649 states and 3602 transitions. [2023-12-19 01:37:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:37:36,554 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 [2023-12-19 01:37:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:36,560 INFO L225 Difference]: With dead ends: 2649 [2023-12-19 01:37:36,560 INFO L226 Difference]: Without dead ends: 1554 [2023-12-19 01:37:36,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:37:36,563 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 621 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:36,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 2490 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:37:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-19 01:37:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1480. [2023-12-19 01:37:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1190 states have (on average 1.4260504201680673) internal successors, (1697), 1214 states have internal predecessors, (1697), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2023-12-19 01:37:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2043 transitions. [2023-12-19 01:37:36,649 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2043 transitions. Word has length 59 [2023-12-19 01:37:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:36,649 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2043 transitions. [2023-12-19 01:37:36,649 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) [2023-12-19 01:37:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2043 transitions. [2023-12-19 01:37:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:37:36,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:36,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:36,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:37:36,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:36,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1149831518, now seen corresponding path program 1 times [2023-12-19 01:37:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076753805] [2023-12-19 01:37:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076753805] [2023-12-19 01:37:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076753805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851163457] [2023-12-19 01:37:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:36,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:36,761 INFO L87 Difference]: Start difference. First operand 1480 states and 2043 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) [2023-12-19 01:37:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:37,837 INFO L93 Difference]: Finished difference Result 2630 states and 3485 transitions. [2023-12-19 01:37:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:37:37,838 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 [2023-12-19 01:37:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:37,843 INFO L225 Difference]: With dead ends: 2630 [2023-12-19 01:37:37,843 INFO L226 Difference]: Without dead ends: 1718 [2023-12-19 01:37:37,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:37:37,846 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1362 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:37,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1806 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2023-12-19 01:37:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1425. [2023-12-19 01:37:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1151 states have (on average 1.423979148566464) internal successors, (1639), 1170 states have internal predecessors, (1639), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2023-12-19 01:37:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1964 transitions. [2023-12-19 01:37:37,910 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1964 transitions. Word has length 59 [2023-12-19 01:37:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:37,910 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 1964 transitions. [2023-12-19 01:37:37,910 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) [2023-12-19 01:37:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1964 transitions. [2023-12-19 01:37:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:37:37,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:37,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:37:37,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:37,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1368686236, now seen corresponding path program 1 times [2023-12-19 01:37:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525163808] [2023-12-19 01:37:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525163808] [2023-12-19 01:37:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525163808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:37,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:37,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062612435] [2023-12-19 01:37:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:37,992 INFO L87 Difference]: Start difference. First operand 1425 states and 1964 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) [2023-12-19 01:37:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:38,724 INFO L93 Difference]: Finished difference Result 3574 states and 4735 transitions. [2023-12-19 01:37:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:37:38,725 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 [2023-12-19 01:37:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:38,733 INFO L225 Difference]: With dead ends: 3574 [2023-12-19 01:37:38,733 INFO L226 Difference]: Without dead ends: 2511 [2023-12-19 01:37:38,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:37:38,738 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1679 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:38,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 1228 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-12-19 01:37:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2395. [2023-12-19 01:37:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1878 states have (on average 1.351437699680511) internal successors, (2538), 1914 states have internal predecessors, (2538), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2023-12-19 01:37:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3173 transitions. [2023-12-19 01:37:38,915 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3173 transitions. Word has length 59 [2023-12-19 01:37:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:38,916 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 3173 transitions. [2023-12-19 01:37:38,916 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) [2023-12-19 01:37:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3173 transitions. [2023-12-19 01:37:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:37:38,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:38,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:38,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:37:38,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:38,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 162092218, now seen corresponding path program 1 times [2023-12-19 01:37:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716539972] [2023-12-19 01:37:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716539972] [2023-12-19 01:37:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716539972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379776332] [2023-12-19 01:37:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:38,990 INFO L87 Difference]: Start difference. First operand 2395 states and 3173 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:39,905 INFO L93 Difference]: Finished difference Result 5447 states and 7054 transitions. [2023-12-19 01:37:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:37:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-19 01:37:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:39,920 INFO L225 Difference]: With dead ends: 5447 [2023-12-19 01:37:39,921 INFO L226 Difference]: Without dead ends: 3419 [2023-12-19 01:37:39,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:37:39,927 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 788 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:39,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1501 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:37:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2023-12-19 01:37:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3161. [2023-12-19 01:37:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 2458 states have (on average 1.3283157038242475) internal successors, (3265), 2499 states have internal predecessors, (3265), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2023-12-19 01:37:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4106 transitions. [2023-12-19 01:37:40,178 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4106 transitions. Word has length 60 [2023-12-19 01:37:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:40,178 INFO L495 AbstractCegarLoop]: Abstraction has 3161 states and 4106 transitions. [2023-12-19 01:37:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4106 transitions. [2023-12-19 01:37:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:37:40,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:40,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:40,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:37:40,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:40,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash -337547975, now seen corresponding path program 1 times [2023-12-19 01:37:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566467436] [2023-12-19 01:37:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566467436] [2023-12-19 01:37:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566467436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:40,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:40,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114949115] [2023-12-19 01:37:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:40,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:40,271 INFO L87 Difference]: Start difference. First operand 3161 states and 4106 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:41,223 INFO L93 Difference]: Finished difference Result 6725 states and 8572 transitions. [2023-12-19 01:37:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:37:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-19 01:37:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:41,244 INFO L225 Difference]: With dead ends: 6725 [2023-12-19 01:37:41,245 INFO L226 Difference]: Without dead ends: 3929 [2023-12-19 01:37:41,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:37:41,252 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1311 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:41,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1278 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:37:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2023-12-19 01:37:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3665. [2023-12-19 01:37:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2848 states have (on average 1.3184691011235956) internal successors, (3755), 2893 states have internal predecessors, (3755), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2023-12-19 01:37:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4725 transitions. [2023-12-19 01:37:41,459 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4725 transitions. Word has length 66 [2023-12-19 01:37:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:41,459 INFO L495 AbstractCegarLoop]: Abstraction has 3665 states and 4725 transitions. [2023-12-19 01:37:41,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:37:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4725 transitions. [2023-12-19 01:37:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 01:37:41,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:41,465 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:37:41,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:41,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1903944634, now seen corresponding path program 1 times [2023-12-19 01:37:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46502119] [2023-12-19 01:37:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46502119] [2023-12-19 01:37:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46502119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174651652] [2023-12-19 01:37:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:41,566 INFO L87 Difference]: Start difference. First operand 3665 states and 4725 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:37:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:42,606 INFO L93 Difference]: Finished difference Result 4673 states and 5942 transitions. [2023-12-19 01:37:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:37:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-19 01:37:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:42,631 INFO L225 Difference]: With dead ends: 4673 [2023-12-19 01:37:42,631 INFO L226 Difference]: Without dead ends: 4670 [2023-12-19 01:37:42,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:37:42,636 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2297 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:42,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 964 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:37:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2023-12-19 01:37:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4085. [2023-12-19 01:37:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 3161 states have (on average 1.3062322049984183) internal successors, (4129), 3209 states have internal predecessors, (4129), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2023-12-19 01:37:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 5226 transitions. [2023-12-19 01:37:42,986 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 5226 transitions. Word has length 67 [2023-12-19 01:37:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:42,987 INFO L495 AbstractCegarLoop]: Abstraction has 4085 states and 5226 transitions. [2023-12-19 01:37:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:37:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 5226 transitions. [2023-12-19 01:37:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:37:42,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:42,989 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:42,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:37:42,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:42,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1108732509, now seen corresponding path program 1 times [2023-12-19 01:37:42,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:42,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548079158] [2023-12-19 01:37:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548079158] [2023-12-19 01:37:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548079158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:43,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330871590] [2023-12-19 01:37:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:43,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:37:43,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:37:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:43,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:37:43,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:43,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:37:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330871590] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:37:43,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:37:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-19 01:37:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638963332] [2023-12-19 01:37:43,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:37:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:37:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:37:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:43,613 INFO L87 Difference]: Start difference. First operand 4085 states and 5226 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 01:37:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:45,419 INFO L93 Difference]: Finished difference Result 8057 states and 10089 transitions. [2023-12-19 01:37:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 01:37:45,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-19 01:37:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:45,455 INFO L225 Difference]: With dead ends: 8057 [2023-12-19 01:37:45,455 INFO L226 Difference]: Without dead ends: 8054 [2023-12-19 01:37:45,459 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 [2023-12-19 01:37:45,460 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 2064 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:45,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 2153 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:37:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2023-12-19 01:37:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 7202. [2023-12-19 01:37:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7202 states, 5536 states have (on average 1.2846820809248556) internal successors, (7112), 5619 states have internal predecessors, (7112), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2023-12-19 01:37:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 9069 transitions. [2023-12-19 01:37:45,866 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 9069 transitions. Word has length 68 [2023-12-19 01:37:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:45,866 INFO L495 AbstractCegarLoop]: Abstraction has 7202 states and 9069 transitions. [2023-12-19 01:37:45,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 01:37:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 9069 transitions. [2023-12-19 01:37:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 01:37:45,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:45,869 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:45,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:37:46,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 01:37:46,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:46,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash 681300090, now seen corresponding path program 2 times [2023-12-19 01:37:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:46,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650527459] [2023-12-19 01:37:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:46,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650527459] [2023-12-19 01:37:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650527459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509566729] [2023-12-19 01:37:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:46,136 INFO L87 Difference]: Start difference. First operand 7202 states and 9069 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:37:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:46,905 INFO L93 Difference]: Finished difference Result 9590 states and 12072 transitions. [2023-12-19 01:37:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:37:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-19 01:37:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:46,918 INFO L225 Difference]: With dead ends: 9590 [2023-12-19 01:37:46,918 INFO L226 Difference]: Without dead ends: 3952 [2023-12-19 01:37:46,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:46,928 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1259 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:46,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1317 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2023-12-19 01:37:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3016. [2023-12-19 01:37:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2356 states have (on average 1.3009337860780985) internal successors, (3065), 2385 states have internal predecessors, (3065), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2023-12-19 01:37:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 3840 transitions. [2023-12-19 01:37:47,136 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 3840 transitions. Word has length 71 [2023-12-19 01:37:47,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:47,136 INFO L495 AbstractCegarLoop]: Abstraction has 3016 states and 3840 transitions. [2023-12-19 01:37:47,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-19 01:37:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 3840 transitions. [2023-12-19 01:37:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:37:47,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:47,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:37:47,138 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:47,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 593941346, now seen corresponding path program 1 times [2023-12-19 01:37:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:47,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312262813] [2023-12-19 01:37:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:37:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312262813] [2023-12-19 01:37:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312262813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223113904] [2023-12-19 01:37:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:47,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:47,236 INFO L87 Difference]: Start difference. First operand 3016 states and 3840 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:37:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:48,464 INFO L93 Difference]: Finished difference Result 8334 states and 10371 transitions. [2023-12-19 01:37:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:37:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-19 01:37:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:48,476 INFO L225 Difference]: With dead ends: 8334 [2023-12-19 01:37:48,476 INFO L226 Difference]: Without dead ends: 4944 [2023-12-19 01:37:48,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-19 01:37:48,481 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1430 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:48,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1908 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2023-12-19 01:37:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4684. [2023-12-19 01:37:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 3589 states have (on average 1.2585678461967122) internal successors, (4517), 3655 states have internal predecessors, (4517), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2023-12-19 01:37:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 5842 transitions. [2023-12-19 01:37:48,683 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 5842 transitions. Word has length 76 [2023-12-19 01:37:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:48,684 INFO L495 AbstractCegarLoop]: Abstraction has 4684 states and 5842 transitions. [2023-12-19 01:37:48,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:37:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 5842 transitions. [2023-12-19 01:37:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:37:48,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:48,689 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:37:48,689 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:48,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1577653767, now seen corresponding path program 1 times [2023-12-19 01:37:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957423067] [2023-12-19 01:37:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:37:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:37:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957423067] [2023-12-19 01:37:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957423067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:48,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:48,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536288283] [2023-12-19 01:37:48,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:48,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:48,806 INFO L87 Difference]: Start difference. First operand 4684 states and 5842 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:37:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:50,237 INFO L93 Difference]: Finished difference Result 7774 states and 9590 transitions. [2023-12-19 01:37:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:37:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-19 01:37:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:50,246 INFO L225 Difference]: With dead ends: 7774 [2023-12-19 01:37:50,247 INFO L226 Difference]: Without dead ends: 3931 [2023-12-19 01:37:50,252 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 [2023-12-19 01:37:50,253 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1855 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:50,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 1894 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:37:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2023-12-19 01:37:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3527. [2023-12-19 01:37:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 2698 states have (on average 1.250555967383247) internal successors, (3374), 2752 states have internal predecessors, (3374), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2023-12-19 01:37:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4333 transitions. [2023-12-19 01:37:50,469 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4333 transitions. Word has length 86 [2023-12-19 01:37:50,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:50,469 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 4333 transitions. [2023-12-19 01:37:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:37:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4333 transitions. [2023-12-19 01:37:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:37:50,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:50,472 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:37:50,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1136699246, now seen corresponding path program 1 times [2023-12-19 01:37:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555149789] [2023-12-19 01:37:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 01:37:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 01:37:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 01:37:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 01:37:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 01:37:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 01:37:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 01:37:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555149789] [2023-12-19 01:37:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555149789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792936808] [2023-12-19 01:37:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:50,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:50,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:37:50,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:37:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 01:37:50,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:37:50,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:37:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792936808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:50,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:37:50,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-19 01:37:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071276901] [2023-12-19 01:37:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:50,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:50,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:50,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:37:50,817 INFO L87 Difference]: Start difference. First operand 3527 states and 4333 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:37:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:51,042 INFO L93 Difference]: Finished difference Result 5240 states and 6410 transitions. [2023-12-19 01:37:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:51,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2023-12-19 01:37:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:51,047 INFO L225 Difference]: With dead ends: 5240 [2023-12-19 01:37:51,047 INFO L226 Difference]: Without dead ends: 2080 [2023-12-19 01:37:51,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:37:51,052 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 32 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:51,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3194 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:37:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-12-19 01:37:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1958. [2023-12-19 01:37:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1575 states have (on average 1.2831746031746032) internal successors, (2021), 1592 states have internal predecessors, (2021), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2023-12-19 01:37:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2476 transitions. [2023-12-19 01:37:51,138 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2476 transitions. Word has length 131 [2023-12-19 01:37:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:51,138 INFO L495 AbstractCegarLoop]: Abstraction has 1958 states and 2476 transitions. [2023-12-19 01:37:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:37:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2476 transitions. [2023-12-19 01:37:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 01:37:51,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:51,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:51,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:37:51,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 01:37:51,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:51,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash -981467806, now seen corresponding path program 1 times [2023-12-19 01:37:51,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:51,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238082810] [2023-12-19 01:37:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:51,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 01:37:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 01:37:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 01:37:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:37:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 01:37:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:37:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 01:37:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238082810] [2023-12-19 01:37:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238082810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:51,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:51,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146512454] [2023-12-19 01:37:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:51,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:51,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:51,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:51,410 INFO L87 Difference]: Start difference. First operand 1958 states and 2476 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:37:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:52,164 INFO L93 Difference]: Finished difference Result 2006 states and 2526 transitions. [2023-12-19 01:37:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-12-19 01:37:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:52,170 INFO L225 Difference]: With dead ends: 2006 [2023-12-19 01:37:52,170 INFO L226 Difference]: Without dead ends: 1666 [2023-12-19 01:37:52,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:52,172 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1013 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:52,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1170 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-12-19 01:37:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1621. [2023-12-19 01:37:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1322 states have (on average 1.3078668683812404) internal successors, (1729), 1336 states have internal predecessors, (1729), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2023-12-19 01:37:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2088 transitions. [2023-12-19 01:37:52,287 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2088 transitions. Word has length 133 [2023-12-19 01:37:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:52,287 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2088 transitions. [2023-12-19 01:37:52,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:37:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2088 transitions. [2023-12-19 01:37:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:37:52,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:52,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:52,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:37:52,289 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:52,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -686051311, now seen corresponding path program 1 times [2023-12-19 01:37:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:52,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139045498] [2023-12-19 01:37:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:37:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 01:37:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:37:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 01:37:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:37:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 01:37:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-19 01:37:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139045498] [2023-12-19 01:37:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139045498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900526894] [2023-12-19 01:37:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:52,395 INFO L87 Difference]: Start difference. First operand 1621 states and 2088 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 01:37:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:53,243 INFO L93 Difference]: Finished difference Result 2772 states and 3472 transitions. [2023-12-19 01:37:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:37:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2023-12-19 01:37:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:53,248 INFO L225 Difference]: With dead ends: 2772 [2023-12-19 01:37:53,248 INFO L226 Difference]: Without dead ends: 1601 [2023-12-19 01:37:53,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:37:53,251 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 949 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:53,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1581 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:37:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-12-19 01:37:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1520. [2023-12-19 01:37:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1245 states have (on average 1.318875502008032) internal successors, (1642), 1259 states have internal predecessors, (1642), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2023-12-19 01:37:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1971 transitions. [2023-12-19 01:37:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1971 transitions. Word has length 145 [2023-12-19 01:37:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:53,315 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 1971 transitions. [2023-12-19 01:37:53,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 01:37:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1971 transitions. [2023-12-19 01:37:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:37:53,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:53,318 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:37:53,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:53,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1881254448, now seen corresponding path program 1 times [2023-12-19 01:37:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500041796] [2023-12-19 01:37:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:37:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 01:37:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 01:37:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:37:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:37:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 01:37:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 01:37:53,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:53,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500041796] [2023-12-19 01:37:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500041796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:53,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962624078] [2023-12-19 01:37:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:53,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:37:53,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:37:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 01:37:53,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:37:53,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:37:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 01:37:53,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962624078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:37:53,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:37:53,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-19 01:37:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773956849] [2023-12-19 01:37:53,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:37:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 01:37:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 01:37:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:37:53,947 INFO L87 Difference]: Start difference. First operand 1520 states and 1971 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:37:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:55,138 INFO L93 Difference]: Finished difference Result 3111 states and 3965 transitions. [2023-12-19 01:37:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 01:37:55,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2023-12-19 01:37:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:55,143 INFO L225 Difference]: With dead ends: 3111 [2023-12-19 01:37:55,143 INFO L226 Difference]: Without dead ends: 1888 [2023-12-19 01:37:55,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:37:55,147 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1971 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:55,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 1367 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-12-19 01:37:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1780. [2023-12-19 01:37:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1430 states have (on average 1.2776223776223776) internal successors, (1827), 1445 states have internal predecessors, (1827), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:37:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2265 transitions. [2023-12-19 01:37:55,230 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2265 transitions. Word has length 147 [2023-12-19 01:37:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:55,230 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 2265 transitions. [2023-12-19 01:37:55,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:37:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2265 transitions. [2023-12-19 01:37:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:37:55,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:55,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:55,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:37:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 01:37:55,440 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:55,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1081367391, now seen corresponding path program 1 times [2023-12-19 01:37:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:55,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205253244] [2023-12-19 01:37:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:37:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:37:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:37:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:37:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205253244] [2023-12-19 01:37:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205253244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:37:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242934283] [2023-12-19 01:37:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:55,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:37:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:37:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:37:55,623 INFO L87 Difference]: Start difference. First operand 1780 states and 2265 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:37:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:57,010 INFO L93 Difference]: Finished difference Result 2256 states and 3062 transitions. [2023-12-19 01:37:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:37:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:57,015 INFO L225 Difference]: With dead ends: 2256 [2023-12-19 01:37:57,015 INFO L226 Difference]: Without dead ends: 1910 [2023-12-19 01:37:57,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:57,016 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1082 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:57,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 855 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2023-12-19 01:37:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1780. [2023-12-19 01:37:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1430 states have (on average 1.2769230769230768) internal successors, (1826), 1445 states have internal predecessors, (1826), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:37:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2264 transitions. [2023-12-19 01:37:57,155 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2264 transitions. Word has length 162 [2023-12-19 01:37:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:57,155 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 2264 transitions. [2023-12-19 01:37:57,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:37:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2264 transitions. [2023-12-19 01:37:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:37:57,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:57,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:57,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:37:57,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:57,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash 323824287, now seen corresponding path program 1 times [2023-12-19 01:37:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216063806] [2023-12-19 01:37:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:57,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:37:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:37:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:37:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:37:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216063806] [2023-12-19 01:37:57,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216063806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852464352] [2023-12-19 01:37:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:57,320 INFO L87 Difference]: Start difference. First operand 1780 states and 2264 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:37:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:59,313 INFO L93 Difference]: Finished difference Result 2314 states and 3163 transitions. [2023-12-19 01:37:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:37:59,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:37:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:59,335 INFO L225 Difference]: With dead ends: 2314 [2023-12-19 01:37:59,335 INFO L226 Difference]: Without dead ends: 1976 [2023-12-19 01:37:59,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:37:59,336 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1353 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:59,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1485 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:37:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-19 01:37:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1782. [2023-12-19 01:37:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1432 states have (on average 1.2758379888268156) internal successors, (1827), 1447 states have internal predecessors, (1827), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:37:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2265 transitions. [2023-12-19 01:37:59,607 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2265 transitions. Word has length 162 [2023-12-19 01:37:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2265 transitions. [2023-12-19 01:37:59,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:37:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2265 transitions. [2023-12-19 01:37:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:37:59,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:59,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:37:59,610 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:59,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 815408859, now seen corresponding path program 1 times [2023-12-19 01:37:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451905520] [2023-12-19 01:37:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:37:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:37:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:37:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:37:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:59,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451905520] [2023-12-19 01:37:59,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451905520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:59,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:59,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972123246] [2023-12-19 01:37:59,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:59,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:59,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:59,799 INFO L87 Difference]: Start difference. First operand 1782 states and 2265 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:02,965 INFO L93 Difference]: Finished difference Result 2811 states and 4005 transitions. [2023-12-19 01:38:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 01:38:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:02,970 INFO L225 Difference]: With dead ends: 2811 [2023-12-19 01:38:02,970 INFO L226 Difference]: Without dead ends: 2474 [2023-12-19 01:38:02,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-19 01:38:02,971 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1939 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:02,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 1922 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 01:38:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2023-12-19 01:38:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2141. [2023-12-19 01:38:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 1763 states have (on average 1.3448667044809983) internal successors, (2371), 1779 states have internal predecessors, (2371), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2023-12-19 01:38:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2854 transitions. [2023-12-19 01:38:03,128 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2854 transitions. Word has length 162 [2023-12-19 01:38:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 2854 transitions. [2023-12-19 01:38:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2854 transitions. [2023-12-19 01:38:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:03,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:03,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:38:03,131 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:03,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 993965213, now seen corresponding path program 1 times [2023-12-19 01:38:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663789090] [2023-12-19 01:38:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:03,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663789090] [2023-12-19 01:38:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663789090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:03,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:38:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412739018] [2023-12-19 01:38:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:03,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:38:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:38:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:03,358 INFO L87 Difference]: Start difference. First operand 2141 states and 2854 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:08,156 INFO L93 Difference]: Finished difference Result 3690 states and 5474 transitions. [2023-12-19 01:38:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:38:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:08,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:08,170 INFO L225 Difference]: With dead ends: 3690 [2023-12-19 01:38:08,170 INFO L226 Difference]: Without dead ends: 2994 [2023-12-19 01:38:08,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:38:08,172 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1890 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 5650 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 5754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:08,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1921 Valid, 3313 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5650 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 01:38:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-12-19 01:38:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2478. [2023-12-19 01:38:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2072 states have (on average 1.3836872586872586) internal successors, (2867), 2089 states have internal predecessors, (2867), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3394 transitions. [2023-12-19 01:38:08,357 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3394 transitions. Word has length 162 [2023-12-19 01:38:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:08,357 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3394 transitions. [2023-12-19 01:38:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3394 transitions. [2023-12-19 01:38:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:08,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:08,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:08,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:38:08,362 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:08,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1211301215, now seen corresponding path program 1 times [2023-12-19 01:38:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:08,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235009439] [2023-12-19 01:38:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:08,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235009439] [2023-12-19 01:38:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235009439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650425177] [2023-12-19 01:38:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:08,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:08,564 INFO L87 Difference]: Start difference. First operand 2478 states and 3394 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:10,146 INFO L93 Difference]: Finished difference Result 3983 states and 5907 transitions. [2023-12-19 01:38:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:10,152 INFO L225 Difference]: With dead ends: 3983 [2023-12-19 01:38:10,152 INFO L226 Difference]: Without dead ends: 2950 [2023-12-19 01:38:10,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:10,156 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1490 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:10,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1083 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2023-12-19 01:38:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2478. [2023-12-19 01:38:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2072 states have (on average 1.3822393822393821) internal successors, (2864), 2089 states have internal predecessors, (2864), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3391 transitions. [2023-12-19 01:38:10,420 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3391 transitions. Word has length 162 [2023-12-19 01:38:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:10,420 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3391 transitions. [2023-12-19 01:38:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3391 transitions. [2023-12-19 01:38:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:10,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:10,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:10,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:38:10,422 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:10,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash 947782879, now seen corresponding path program 1 times [2023-12-19 01:38:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531863654] [2023-12-19 01:38:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:10,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:10,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531863654] [2023-12-19 01:38:10,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531863654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917867512] [2023-12-19 01:38:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:10,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:10,603 INFO L87 Difference]: Start difference. First operand 2478 states and 3391 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:12,138 INFO L93 Difference]: Finished difference Result 3979 states and 5890 transitions. [2023-12-19 01:38:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:12,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:12,144 INFO L225 Difference]: With dead ends: 3979 [2023-12-19 01:38:12,144 INFO L226 Difference]: Without dead ends: 2946 [2023-12-19 01:38:12,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:12,147 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1488 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:12,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1083 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2023-12-19 01:38:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2478. [2023-12-19 01:38:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2072 states have (on average 1.380791505791506) internal successors, (2861), 2089 states have internal predecessors, (2861), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3388 transitions. [2023-12-19 01:38:12,334 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3388 transitions. Word has length 162 [2023-12-19 01:38:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:12,334 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3388 transitions. [2023-12-19 01:38:12,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3388 transitions. [2023-12-19 01:38:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:12,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:12,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:38:12,336 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:12,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1017430753, now seen corresponding path program 1 times [2023-12-19 01:38:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223397384] [2023-12-19 01:38:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223397384] [2023-12-19 01:38:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223397384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:12,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:12,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:12,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160074284] [2023-12-19 01:38:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:12,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:12,519 INFO L87 Difference]: Start difference. First operand 2478 states and 3388 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:14,280 INFO L93 Difference]: Finished difference Result 3975 states and 5873 transitions. [2023-12-19 01:38:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:14,287 INFO L225 Difference]: With dead ends: 3975 [2023-12-19 01:38:14,287 INFO L226 Difference]: Without dead ends: 2942 [2023-12-19 01:38:14,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:14,290 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1568 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:14,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1082 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:38:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2023-12-19 01:38:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2478. [2023-12-19 01:38:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2072 states have (on average 1.3793436293436294) internal successors, (2858), 2089 states have internal predecessors, (2858), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3385 transitions. [2023-12-19 01:38:14,488 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3385 transitions. Word has length 162 [2023-12-19 01:38:14,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:14,488 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3385 transitions. [2023-12-19 01:38:14,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3385 transitions. [2023-12-19 01:38:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:14,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:14,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:14,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:38:14,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:14,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1435319455, now seen corresponding path program 1 times [2023-12-19 01:38:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017851570] [2023-12-19 01:38:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:14,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017851570] [2023-12-19 01:38:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017851570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:14,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080855647] [2023-12-19 01:38:14,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:14,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:14,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:14,664 INFO L87 Difference]: Start difference. First operand 2478 states and 3385 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:17,615 INFO L93 Difference]: Finished difference Result 4906 states and 7375 transitions. [2023-12-19 01:38:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:17,625 INFO L225 Difference]: With dead ends: 4906 [2023-12-19 01:38:17,625 INFO L226 Difference]: Without dead ends: 3873 [2023-12-19 01:38:17,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:38:17,627 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1712 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 3986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:17,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 2321 Invalid, 3986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:38:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2023-12-19 01:38:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3156. [2023-12-19 01:38:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3156 states, 2694 states have (on average 1.4302152932442465) internal successors, (3853), 2713 states have internal predecessors, (3853), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-12-19 01:38:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 4472 transitions. [2023-12-19 01:38:17,844 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 4472 transitions. Word has length 162 [2023-12-19 01:38:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:17,844 INFO L495 AbstractCegarLoop]: Abstraction has 3156 states and 4472 transitions. [2023-12-19 01:38:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 4472 transitions. [2023-12-19 01:38:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:17,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:17,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:38:17,846 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:17,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1460694239, now seen corresponding path program 1 times [2023-12-19 01:38:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123892433] [2023-12-19 01:38:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123892433] [2023-12-19 01:38:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123892433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:17,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:17,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736779328] [2023-12-19 01:38:17,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:17,990 INFO L87 Difference]: Start difference. First operand 3156 states and 4472 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:19,536 INFO L93 Difference]: Finished difference Result 5569 states and 8448 transitions. [2023-12-19 01:38:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:19,545 INFO L225 Difference]: With dead ends: 5569 [2023-12-19 01:38:19,545 INFO L226 Difference]: Without dead ends: 3858 [2023-12-19 01:38:19,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:19,548 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1485 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:19,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1083 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2023-12-19 01:38:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3156. [2023-12-19 01:38:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3156 states, 2694 states have (on average 1.4283593170007425) internal successors, (3848), 2713 states have internal predecessors, (3848), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-12-19 01:38:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 4467 transitions. [2023-12-19 01:38:19,777 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 4467 transitions. Word has length 162 [2023-12-19 01:38:19,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:19,777 INFO L495 AbstractCegarLoop]: Abstraction has 3156 states and 4467 transitions. [2023-12-19 01:38:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 4467 transitions. [2023-12-19 01:38:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:19,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:19,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:38:19,780 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1216832607, now seen corresponding path program 1 times [2023-12-19 01:38:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921335914] [2023-12-19 01:38:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921335914] [2023-12-19 01:38:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921335914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360149316] [2023-12-19 01:38:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:20,020 INFO L87 Difference]: Start difference. First operand 3156 states and 4467 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:23,439 INFO L93 Difference]: Finished difference Result 7374 states and 11346 transitions. [2023-12-19 01:38:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:23,452 INFO L225 Difference]: With dead ends: 7374 [2023-12-19 01:38:23,452 INFO L226 Difference]: Without dead ends: 5663 [2023-12-19 01:38:23,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:38:23,456 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1710 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 3841 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:23,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 2321 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3841 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:38:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2023-12-19 01:38:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4514. [2023-12-19 01:38:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 3940 states have (on average 1.4802030456852793) internal successors, (5832), 3963 states have internal predecessors, (5832), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-12-19 01:38:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 6641 transitions. [2023-12-19 01:38:23,812 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 6641 transitions. Word has length 162 [2023-12-19 01:38:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:23,813 INFO L495 AbstractCegarLoop]: Abstraction has 4514 states and 6641 transitions. [2023-12-19 01:38:23,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 6641 transitions. [2023-12-19 01:38:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:23,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:23,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:23,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:38:23,816 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:23,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1580299105, now seen corresponding path program 1 times [2023-12-19 01:38:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:23,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918706250] [2023-12-19 01:38:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:23,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:24,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:24,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918706250] [2023-12-19 01:38:24,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918706250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:24,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:24,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:24,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031750843] [2023-12-19 01:38:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:24,019 INFO L87 Difference]: Start difference. First operand 4514 states and 6641 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:27,544 INFO L93 Difference]: Finished difference Result 12308 states and 19326 transitions. [2023-12-19 01:38:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:27,593 INFO L225 Difference]: With dead ends: 12308 [2023-12-19 01:38:27,593 INFO L226 Difference]: Without dead ends: 9239 [2023-12-19 01:38:27,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:38:27,602 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1705 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:27,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 2321 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:38:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2023-12-19 01:38:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7244. [2023-12-19 01:38:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 6446 states have (on average 1.5240459199503569) internal successors, (9824), 6477 states have internal predecessors, (9824), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:38:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 11031 transitions. [2023-12-19 01:38:28,016 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 11031 transitions. Word has length 162 [2023-12-19 01:38:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:28,016 INFO L495 AbstractCegarLoop]: Abstraction has 7244 states and 11031 transitions. [2023-12-19 01:38:28,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 11031 transitions. [2023-12-19 01:38:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:28,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:28,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:28,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:38:28,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:28,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1035426531, now seen corresponding path program 1 times [2023-12-19 01:38:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:28,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395519077] [2023-12-19 01:38:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395519077] [2023-12-19 01:38:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395519077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036992964] [2023-12-19 01:38:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:28,181 INFO L87 Difference]: Start difference. First operand 7244 states and 11031 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:30,069 INFO L93 Difference]: Finished difference Result 15109 states and 23929 transitions. [2023-12-19 01:38:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:30,089 INFO L225 Difference]: With dead ends: 15109 [2023-12-19 01:38:30,089 INFO L226 Difference]: Without dead ends: 9310 [2023-12-19 01:38:30,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:30,098 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1489 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:30,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1083 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:38:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2023-12-19 01:38:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 7244. [2023-12-19 01:38:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 6446 states have (on average 1.5214086255041885) internal successors, (9807), 6477 states have internal predecessors, (9807), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:38:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 11014 transitions. [2023-12-19 01:38:30,530 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 11014 transitions. Word has length 162 [2023-12-19 01:38:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:30,531 INFO L495 AbstractCegarLoop]: Abstraction has 7244 states and 11014 transitions. [2023-12-19 01:38:30,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 11014 transitions. [2023-12-19 01:38:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:30,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:30,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:38:30,535 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:30,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1710586657, now seen corresponding path program 1 times [2023-12-19 01:38:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922186629] [2023-12-19 01:38:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:30,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922186629] [2023-12-19 01:38:30,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922186629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:30,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:30,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878072409] [2023-12-19 01:38:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:30,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:30,701 INFO L87 Difference]: Start difference. First operand 7244 states and 11014 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:32,637 INFO L93 Difference]: Finished difference Result 15091 states and 23842 transitions. [2023-12-19 01:38:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:32,670 INFO L225 Difference]: With dead ends: 15091 [2023-12-19 01:38:32,670 INFO L226 Difference]: Without dead ends: 9292 [2023-12-19 01:38:32,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:32,681 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1287 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:32,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1297 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:38:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9292 states. [2023-12-19 01:38:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9292 to 7244. [2023-12-19 01:38:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 6446 states have (on average 1.5187713310580204) internal successors, (9790), 6477 states have internal predecessors, (9790), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:38:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 10997 transitions. [2023-12-19 01:38:33,180 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 10997 transitions. Word has length 162 [2023-12-19 01:38:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:33,180 INFO L495 AbstractCegarLoop]: Abstraction has 7244 states and 10997 transitions. [2023-12-19 01:38:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 10997 transitions. [2023-12-19 01:38:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:33,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:33,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:38:33,185 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash 762534691, now seen corresponding path program 1 times [2023-12-19 01:38:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66196991] [2023-12-19 01:38:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66196991] [2023-12-19 01:38:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66196991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143589785] [2023-12-19 01:38:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:33,374 INFO L87 Difference]: Start difference. First operand 7244 states and 10997 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:37,451 INFO L93 Difference]: Finished difference Result 24784 states and 39292 transitions. [2023-12-19 01:38:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:38:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:37,509 INFO L225 Difference]: With dead ends: 24784 [2023-12-19 01:38:37,510 INFO L226 Difference]: Without dead ends: 18985 [2023-12-19 01:38:37,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:38:37,527 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1885 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 4026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:37,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 1557 Invalid, 4026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3876 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:38:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18985 states. [2023-12-19 01:38:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18985 to 12719. [2023-12-19 01:38:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12719 states, 11489 states have (on average 1.5475672382278702) internal successors, (17780), 11536 states have internal predecessors, (17780), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2023-12-19 01:38:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12719 states to 12719 states and 19805 transitions. [2023-12-19 01:38:38,290 INFO L78 Accepts]: Start accepts. Automaton has 12719 states and 19805 transitions. Word has length 162 [2023-12-19 01:38:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 12719 states and 19805 transitions. [2023-12-19 01:38:38,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12719 states and 19805 transitions. [2023-12-19 01:38:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:38,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:38,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:38,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 01:38:38,297 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:38,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 177763041, now seen corresponding path program 1 times [2023-12-19 01:38:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:38,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686586151] [2023-12-19 01:38:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686586151] [2023-12-19 01:38:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686586151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:38,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:38,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29009572] [2023-12-19 01:38:38,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:38,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:38,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:38,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:38,519 INFO L87 Difference]: Start difference. First operand 12719 states and 19805 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:43,180 INFO L93 Difference]: Finished difference Result 46737 states and 74838 transitions. [2023-12-19 01:38:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:38:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:43,270 INFO L225 Difference]: With dead ends: 46737 [2023-12-19 01:38:43,270 INFO L226 Difference]: Without dead ends: 35463 [2023-12-19 01:38:43,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:38:43,297 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2087 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:43,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 2310 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:38:43,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35463 states. [2023-12-19 01:38:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35463 to 23344. [2023-12-19 01:38:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23344 states, 21266 states have (on average 1.5614596068842284) internal successors, (33206), 21345 states have internal predecessors, (33206), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2023-12-19 01:38:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23344 states to 23344 states and 36997 transitions. [2023-12-19 01:38:44,817 INFO L78 Accepts]: Start accepts. Automaton has 23344 states and 36997 transitions. Word has length 162 [2023-12-19 01:38:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:44,818 INFO L495 AbstractCegarLoop]: Abstraction has 23344 states and 36997 transitions. [2023-12-19 01:38:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 23344 states and 36997 transitions. [2023-12-19 01:38:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:44,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:44,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 01:38:44,828 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:44,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -256742557, now seen corresponding path program 1 times [2023-12-19 01:38:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:44,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735205377] [2023-12-19 01:38:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735205377] [2023-12-19 01:38:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735205377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964434530] [2023-12-19 01:38:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:45,071 INFO L87 Difference]: Start difference. First operand 23344 states and 36997 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:51,889 INFO L93 Difference]: Finished difference Result 88720 states and 143372 transitions. [2023-12-19 01:38:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:38:51,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:38:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:52,311 INFO L225 Difference]: With dead ends: 88720 [2023-12-19 01:38:52,311 INFO L226 Difference]: Without dead ends: 66821 [2023-12-19 01:38:52,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:38:52,427 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1780 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 4340 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 4444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:52,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 2314 Invalid, 4444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 4340 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 01:38:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66821 states. [2023-12-19 01:38:55,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66821 to 44913. [2023-12-19 01:38:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44913 states, 41171 states have (on average 1.5713973427898278) internal successors, (64696), 41314 states have internal predecessors, (64696), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2023-12-19 01:38:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44913 states to 44913 states and 72441 transitions. [2023-12-19 01:38:55,910 INFO L78 Accepts]: Start accepts. Automaton has 44913 states and 72441 transitions. Word has length 162 [2023-12-19 01:38:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:55,910 INFO L495 AbstractCegarLoop]: Abstraction has 44913 states and 72441 transitions. [2023-12-19 01:38:55,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 44913 states and 72441 transitions. [2023-12-19 01:38:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:55,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:55,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-19 01:38:55,932 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:55,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash -686400863, now seen corresponding path program 1 times [2023-12-19 01:38:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889400377] [2023-12-19 01:38:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889400377] [2023-12-19 01:38:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889400377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:56,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940269721] [2023-12-19 01:38:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:56,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:56,212 INFO L87 Difference]: Start difference. First operand 44913 states and 72441 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:04,039 INFO L93 Difference]: Finished difference Result 173647 states and 283794 transitions. [2023-12-19 01:39:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:39:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:04,512 INFO L225 Difference]: With dead ends: 173647 [2023-12-19 01:39:04,512 INFO L226 Difference]: Without dead ends: 130179 [2023-12-19 01:39:04,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:04,643 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2022 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:04,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 2314 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:39:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130179 states. [2023-12-19 01:39:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130179 to 88050. [2023-12-19 01:39:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88050 states, 81044 states have (on average 1.576945856571739) internal successors, (127802), 81315 states have internal predecessors, (127802), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2023-12-19 01:39:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88050 states to 88050 states and 144785 transitions. [2023-12-19 01:39:10,520 INFO L78 Accepts]: Start accepts. Automaton has 88050 states and 144785 transitions. Word has length 162 [2023-12-19 01:39:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:10,523 INFO L495 AbstractCegarLoop]: Abstraction has 88050 states and 144785 transitions. [2023-12-19 01:39:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 88050 states and 144785 transitions. [2023-12-19 01:39:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:10,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:10,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 01:39:10,560 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:10,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1392997469, now seen corresponding path program 1 times [2023-12-19 01:39:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12623889] [2023-12-19 01:39:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:10,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12623889] [2023-12-19 01:39:10,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12623889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:10,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126633332] [2023-12-19 01:39:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:10,787 INFO L87 Difference]: Start difference. First operand 88050 states and 144785 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:17,073 INFO L93 Difference]: Finished difference Result 201251 states and 337791 transitions. [2023-12-19 01:39:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:39:17,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:39:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:17,630 INFO L225 Difference]: With dead ends: 201251 [2023-12-19 01:39:17,631 INFO L226 Difference]: Without dead ends: 114646 [2023-12-19 01:39:17,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:39:17,908 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1491 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:17,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1082 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:39:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114646 states. [2023-12-19 01:39:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114646 to 88050. [2023-12-19 01:39:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88050 states, 81044 states have (on average 1.5737747396475987) internal successors, (127545), 81315 states have internal predecessors, (127545), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2023-12-19 01:39:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88050 states to 88050 states and 144528 transitions. [2023-12-19 01:39:23,998 INFO L78 Accepts]: Start accepts. Automaton has 88050 states and 144528 transitions. Word has length 162 [2023-12-19 01:39:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:23,998 INFO L495 AbstractCegarLoop]: Abstraction has 88050 states and 144528 transitions. [2023-12-19 01:39:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 88050 states and 144528 transitions. [2023-12-19 01:39:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:24,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:24,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-19 01:39:24,027 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:24,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash -531163867, now seen corresponding path program 1 times [2023-12-19 01:39:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326005671] [2023-12-19 01:39:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326005671] [2023-12-19 01:39:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326005671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536888959] [2023-12-19 01:39:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:24,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:24,202 INFO L87 Difference]: Start difference. First operand 88050 states and 144528 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:37,089 INFO L93 Difference]: Finished difference Result 334410 states and 554844 transitions. [2023-12-19 01:39:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:39:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:38,480 INFO L225 Difference]: With dead ends: 334410 [2023-12-19 01:39:38,480 INFO L226 Difference]: Without dead ends: 247805 [2023-12-19 01:39:38,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:38,704 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1905 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:38,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 2314 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:39:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247805 states. [2023-12-19 01:39:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247805 to 174837. [2023-12-19 01:39:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174837 states, 161431 states have (on average 1.576692209055262) internal successors, (254527), 161958 states have internal predecessors, (254527), 9654 states have call successors, (9654), 3209 states have call predecessors, (9654), 3750 states have return successors, (29923), 10181 states have call predecessors, (29923), 9651 states have call successors, (29923) [2023-12-19 01:39:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174837 states to 174837 states and 294104 transitions. [2023-12-19 01:39:49,922 INFO L78 Accepts]: Start accepts. Automaton has 174837 states and 294104 transitions. Word has length 162 [2023-12-19 01:39:49,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:49,924 INFO L495 AbstractCegarLoop]: Abstraction has 174837 states and 294104 transitions. [2023-12-19 01:39:49,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 174837 states and 294104 transitions. [2023-12-19 01:39:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:50,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:50,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-19 01:39:50,042 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:50,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1713394531, now seen corresponding path program 1 times [2023-12-19 01:39:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626452916] [2023-12-19 01:39:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626452916] [2023-12-19 01:39:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626452916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395718187] [2023-12-19 01:39:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:50,341 INFO L87 Difference]: Start difference. First operand 174837 states and 294104 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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)