/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.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:37:35,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:37:35,384 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 01:37:35,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:37:35,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:37:35,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:37:35,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:37:35,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:37:35,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:37:35,415 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:37:35,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:37:35,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:37:35,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:37:35,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:37:35,418 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:37:35,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:37:35,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:37:35,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:37:35,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:37:35,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:37:35,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:37:35,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:37:35,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:37:35,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:37:35,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:37:35,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:37:35,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:37:35,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:37:35,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:37:35,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:37:35,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:37:35,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:37:35,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:37:35,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:37:35,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:37:35,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:37:35,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:37:35,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:37:35,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:37:35,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2023-12-19 01:37:36,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:37:37,139 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:37:37,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2023-12-19 01:37:37,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c69be3f/87eb9584b3474faebe4a53b34e679fe2/FLAG83a906c99 [2023-12-19 01:37:37,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c69be3f/87eb9584b3474faebe4a53b34e679fe2 [2023-12-19 01:37:37,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:37:37,201 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:37:37,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:37:37,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:37:37,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:37:37,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dd86e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37, skipping insertion in model container [2023-12-19 01:37:37,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,293 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:37:37,500 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.13.cil-1.c[914,927] [2023-12-19 01:37:37,538 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.13.cil-1.c[7115,7128] [2023-12-19 01:37:37,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:37:37,616 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:37:37,625 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.13.cil-1.c[914,927] [2023-12-19 01:37:37,635 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.13.cil-1.c[7115,7128] [2023-12-19 01:37:37,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:37:37,688 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:37:37,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37 WrapperNode [2023-12-19 01:37:37,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:37:37,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:37:37,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:37:37,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:37:37,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,761 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1134 [2023-12-19 01:37:37,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:37:37,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:37:37,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:37:37,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:37:37,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,846 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 01:37:37,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:37:37,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:37:37,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:37:37,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:37:37,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (1/1) ... [2023-12-19 01:37:37,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:37:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:38,002 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 01:37:38,069 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 01:37:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:37:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:37:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:37:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:37:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:37:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:37:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:37:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:37:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:37:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:37:38,081 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:37:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:37:38,082 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:37:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:37:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:37:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:37:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:37:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:37:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:37:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:37:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:37:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:37:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:37:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:37:38,222 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:37:38,225 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:37:39,002 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:37:39,064 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:37:39,064 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-19 01:37:39,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:37:39 BoogieIcfgContainer [2023-12-19 01:37:39,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:37:39,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:37:39,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:37:39,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:37:39,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:37:37" (1/3) ... [2023-12-19 01:37:39,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca9eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:37:39, skipping insertion in model container [2023-12-19 01:37:39,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:37:37" (2/3) ... [2023-12-19 01:37:39,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca9eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:37:39, skipping insertion in model container [2023-12-19 01:37:39,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:37:39" (3/3) ... [2023-12-19 01:37:39,071 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2023-12-19 01:37:39,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:37:39,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:37:39,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:37:39,130 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;@5d2becd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:37:39,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:37:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 409 states have (on average 1.7212713936430317) internal successors, (704), 417 states have internal predecessors, (704), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-19 01:37:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:39,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:39,151 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 01:37:39,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:39,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1646457945, now seen corresponding path program 1 times [2023-12-19 01:37:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426112167] [2023-12-19 01:37:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:39,598 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 01:37:39,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426112167] [2023-12-19 01:37:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426112167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:39,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621061154] [2023-12-19 01:37:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:39,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:39,632 INFO L87 Difference]: Start difference. First operand has 470 states, 409 states have (on average 1.7212713936430317) internal successors, (704), 417 states have internal predecessors, (704), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) 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 01:37:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:40,951 INFO L93 Difference]: Finished difference Result 1038 states and 1729 transitions. [2023-12-19 01:37:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:37:40,954 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 01:37:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:40,977 INFO L225 Difference]: With dead ends: 1038 [2023-12-19 01:37:40,977 INFO L226 Difference]: Without dead ends: 589 [2023-12-19 01:37:40,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:37:40,992 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1214 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:40,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 1618 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:37:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-19 01:37:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 552. [2023-12-19 01:37:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 474 states have (on average 1.590717299578059) internal successors, (754), 481 states have internal predecessors, (754), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-19 01:37:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 863 transitions. [2023-12-19 01:37:41,098 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 863 transitions. Word has length 58 [2023-12-19 01:37:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 863 transitions. [2023-12-19 01:37:41,098 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 01:37:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 863 transitions. [2023-12-19 01:37:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:41,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:41,101 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 01:37:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:37:41,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:41,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1512224281, now seen corresponding path program 1 times [2023-12-19 01:37:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922335229] [2023-12-19 01:37:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:41,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:37:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922335229] [2023-12-19 01:37:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922335229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622067851] [2023-12-19 01:37:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:41,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:41,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:41,314 INFO L87 Difference]: Start difference. First operand 552 states and 863 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 01:37:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:42,668 INFO L93 Difference]: Finished difference Result 748 states and 1139 transitions. [2023-12-19 01:37:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:37:42,669 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 01:37:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:42,672 INFO L225 Difference]: With dead ends: 748 [2023-12-19 01:37:42,672 INFO L226 Difference]: Without dead ends: 586 [2023-12-19 01:37:42,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:37:42,674 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 659 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:42,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 2627 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:37:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-12-19 01:37:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 556. [2023-12-19 01:37:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 477 states have (on average 1.5849056603773586) internal successors, (756), 484 states have internal predecessors, (756), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2023-12-19 01:37:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 866 transitions. [2023-12-19 01:37:42,698 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 866 transitions. Word has length 58 [2023-12-19 01:37:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:42,698 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 866 transitions. [2023-12-19 01:37:42,699 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 01:37:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 866 transitions. [2023-12-19 01:37:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:37:42,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:42,701 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 01:37:42,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:37:42,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:42,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -731759017, now seen corresponding path program 1 times [2023-12-19 01:37:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:42,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256849847] [2023-12-19 01:37:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:42,816 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 01:37:42,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:42,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256849847] [2023-12-19 01:37:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256849847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:42,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:37:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836313588] [2023-12-19 01:37:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:42,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:37:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:42,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:37:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:42,819 INFO L87 Difference]: Start difference. First operand 556 states and 866 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 01:37:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:44,540 INFO L93 Difference]: Finished difference Result 1389 states and 2018 transitions. [2023-12-19 01:37:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:37:44,540 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 01:37:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:44,546 INFO L225 Difference]: With dead ends: 1389 [2023-12-19 01:37:44,546 INFO L226 Difference]: Without dead ends: 1211 [2023-12-19 01:37:44,548 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 01:37:44,548 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 4079 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:44,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4097 Valid, 2048 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:37:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-12-19 01:37:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1094. [2023-12-19 01:37:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 896 states have (on average 1.4810267857142858) internal successors, (1327), 911 states have internal predecessors, (1327), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2023-12-19 01:37:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1563 transitions. [2023-12-19 01:37:44,599 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1563 transitions. Word has length 58 [2023-12-19 01:37:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:44,599 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1563 transitions. [2023-12-19 01:37:44,600 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 01:37:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1563 transitions. [2023-12-19 01:37:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:37:44,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:44,601 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 01:37:44,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:37:44,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:44,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1118498206, now seen corresponding path program 1 times [2023-12-19 01:37:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343637019] [2023-12-19 01:37:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:44,758 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 01:37:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343637019] [2023-12-19 01:37:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343637019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:44,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:44,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154537041] [2023-12-19 01:37:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:44,760 INFO L87 Difference]: Start difference. First operand 1094 states and 1563 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 01:37:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:45,890 INFO L93 Difference]: Finished difference Result 1908 states and 2639 transitions. [2023-12-19 01:37:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:37:45,890 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 01:37:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:45,895 INFO L225 Difference]: With dead ends: 1908 [2023-12-19 01:37:45,895 INFO L226 Difference]: Without dead ends: 1198 [2023-12-19 01:37:45,896 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 01:37:45,897 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 983 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:45,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2325 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:37:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-12-19 01:37:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1110. [2023-12-19 01:37:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 908 states have (on average 1.4691629955947136) internal successors, (1334), 923 states have internal predecessors, (1334), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2023-12-19 01:37:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1574 transitions. [2023-12-19 01:37:45,935 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1574 transitions. Word has length 59 [2023-12-19 01:37:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:45,935 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1574 transitions. [2023-12-19 01:37:45,935 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 01:37:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1574 transitions. [2023-12-19 01:37:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:37:45,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:45,936 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 01:37:45,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:37:45,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:45,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash 804729828, now seen corresponding path program 1 times [2023-12-19 01:37:45,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:45,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297836146] [2023-12-19 01:37:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:45,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,025 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 01:37:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297836146] [2023-12-19 01:37:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297836146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872883392] [2023-12-19 01:37:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:46,028 INFO L87 Difference]: Start difference. First operand 1110 states and 1574 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 01:37:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:46,707 INFO L93 Difference]: Finished difference Result 2636 states and 3557 transitions. [2023-12-19 01:37:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:37:46,708 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 01:37:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:46,715 INFO L225 Difference]: With dead ends: 2636 [2023-12-19 01:37:46,715 INFO L226 Difference]: Without dead ends: 1911 [2023-12-19 01:37:46,717 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 01:37:46,718 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2141 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:46,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 992 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:37:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2023-12-19 01:37:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1779. [2023-12-19 01:37:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1407 states have (on average 1.3951670220326937) internal successors, (1963), 1435 states have internal predecessors, (1963), 194 states have call successors, (194), 142 states have call predecessors, (194), 176 states have return successors, (260), 204 states have call predecessors, (260), 190 states have call successors, (260) [2023-12-19 01:37:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2417 transitions. [2023-12-19 01:37:46,788 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2417 transitions. Word has length 59 [2023-12-19 01:37:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:46,789 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2417 transitions. [2023-12-19 01:37:46,789 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 01:37:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2417 transitions. [2023-12-19 01:37:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:37:46,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:46,790 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 01:37:46,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:37:46,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:46,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash -140761581, now seen corresponding path program 1 times [2023-12-19 01:37:46,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:46,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945069522] [2023-12-19 01:37:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:46,846 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 01:37:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945069522] [2023-12-19 01:37:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945069522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:46,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491945387] [2023-12-19 01:37:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:46,847 INFO L87 Difference]: Start difference. First operand 1779 states and 2417 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 01:37:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:47,629 INFO L93 Difference]: Finished difference Result 4007 states and 5265 transitions. [2023-12-19 01:37:47,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:37:47,630 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 01:37:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:47,640 INFO L225 Difference]: With dead ends: 4007 [2023-12-19 01:37:47,640 INFO L226 Difference]: Without dead ends: 2618 [2023-12-19 01:37:47,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:37:47,645 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 830 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:47,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1584 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2023-12-19 01:37:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2370. [2023-12-19 01:37:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1852 states have (on average 1.3650107991360692) internal successors, (2528), 1885 states have internal predecessors, (2528), 266 states have call successors, (266), 204 states have call predecessors, (266), 250 states have return successors, (353), 283 states have call predecessors, (353), 262 states have call successors, (353) [2023-12-19 01:37:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3147 transitions. [2023-12-19 01:37:47,791 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3147 transitions. Word has length 60 [2023-12-19 01:37:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:47,791 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3147 transitions. [2023-12-19 01:37:47,791 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 01:37:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3147 transitions. [2023-12-19 01:37:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:37:47,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:47,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:37:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:37:47,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:47,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1929223218, now seen corresponding path program 1 times [2023-12-19 01:37:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314051264] [2023-12-19 01:37:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:47,873 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 01:37:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314051264] [2023-12-19 01:37:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314051264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204009247] [2023-12-19 01:37:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:47,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:47,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:47,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:47,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:47,875 INFO L87 Difference]: Start difference. First operand 2370 states and 3147 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 01:37:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:48,554 INFO L93 Difference]: Finished difference Result 4961 states and 6420 transitions. [2023-12-19 01:37:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:37:48,554 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 01:37:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:48,566 INFO L225 Difference]: With dead ends: 4961 [2023-12-19 01:37:48,566 INFO L226 Difference]: Without dead ends: 2979 [2023-12-19 01:37:48,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:37:48,571 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1746 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:48,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 1038 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:37:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-12-19 01:37:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2719. [2023-12-19 01:37:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2123 states have (on average 1.3523316062176165) internal successors, (2871), 2160 states have internal predecessors, (2871), 304 states have call successors, (304), 238 states have call predecessors, (304), 290 states have return successors, (403), 323 states have call predecessors, (403), 300 states have call successors, (403) [2023-12-19 01:37:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3578 transitions. [2023-12-19 01:37:48,679 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3578 transitions. Word has length 66 [2023-12-19 01:37:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:48,679 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3578 transitions. [2023-12-19 01:37:48,679 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 01:37:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3578 transitions. [2023-12-19 01:37:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 01:37:48,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:48,680 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 01:37:48,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:37:48,681 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:48,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash -840666750, now seen corresponding path program 1 times [2023-12-19 01:37:48,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:48,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016473158] [2023-12-19 01:37:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:48,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:48,814 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 01:37:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016473158] [2023-12-19 01:37:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016473158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232827261] [2023-12-19 01:37:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:48,816 INFO L87 Difference]: Start difference. First operand 2719 states and 3578 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 01:37:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:49,649 INFO L93 Difference]: Finished difference Result 3580 states and 4626 transitions. [2023-12-19 01:37:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:37:49,650 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 01:37:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:49,663 INFO L225 Difference]: With dead ends: 3580 [2023-12-19 01:37:49,663 INFO L226 Difference]: Without dead ends: 3577 [2023-12-19 01:37:49,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:37:49,665 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2091 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:49,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 1318 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2023-12-19 01:37:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 2997. [2023-12-19 01:37:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2330 states have (on average 1.3412017167381973) internal successors, (3125), 2370 states have internal predecessors, (3125), 336 states have call successors, (336), 266 states have call predecessors, (336), 329 states have return successors, (454), 363 states have call predecessors, (454), 333 states have call successors, (454) [2023-12-19 01:37:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 3915 transitions. [2023-12-19 01:37:49,800 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 3915 transitions. Word has length 67 [2023-12-19 01:37:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:49,801 INFO L495 AbstractCegarLoop]: Abstraction has 2997 states and 3915 transitions. [2023-12-19 01:37:49,801 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 01:37:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 3915 transitions. [2023-12-19 01:37:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:37:49,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:49,802 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 01:37:49,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:37:49,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:49,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash -292413828, now seen corresponding path program 1 times [2023-12-19 01:37:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:49,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488410226] [2023-12-19 01:37:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:49,924 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 01:37:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488410226] [2023-12-19 01:37:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488410226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520448853] [2023-12-19 01:37:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:49,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:49,954 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 01:37:50,000 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 01:37:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:50,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:37:50,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:50,352 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 01:37:50,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:37:50,407 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 01:37:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520448853] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:37:50,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:37:50,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-19 01:37:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285987334] [2023-12-19 01:37:50,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:37:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:37:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:37:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:50,410 INFO L87 Difference]: Start difference. First operand 2997 states and 3915 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 01:37:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:52,359 INFO L93 Difference]: Finished difference Result 6256 states and 7927 transitions. [2023-12-19 01:37:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:37:52,360 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 01:37:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:52,399 INFO L225 Difference]: With dead ends: 6256 [2023-12-19 01:37:52,399 INFO L226 Difference]: Without dead ends: 6253 [2023-12-19 01:37:52,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:37:52,418 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1781 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:52,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 2603 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:37:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2023-12-19 01:37:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 5385. [2023-12-19 01:37:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 4140 states have (on average 1.3128019323671498) internal successors, (5435), 4207 states have internal predecessors, (5435), 615 states have call successors, (615), 508 states have call predecessors, (615), 628 states have return successors, (837), 672 states have call predecessors, (837), 612 states have call successors, (837) [2023-12-19 01:37:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 6887 transitions. [2023-12-19 01:37:52,686 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 6887 transitions. Word has length 68 [2023-12-19 01:37:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:52,687 INFO L495 AbstractCegarLoop]: Abstraction has 5385 states and 6887 transitions. [2023-12-19 01:37:52,687 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 01:37:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 6887 transitions. [2023-12-19 01:37:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 01:37:52,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:52,688 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 01:37:52,697 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 01:37:52,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:52,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:52,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1452481154, now seen corresponding path program 2 times [2023-12-19 01:37:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:52,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337360503] [2023-12-19 01:37:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:52,949 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 01:37:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337360503] [2023-12-19 01:37:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337360503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530438162] [2023-12-19 01:37:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:52,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:52,950 INFO L87 Difference]: Start difference. First operand 5385 states and 6887 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 01:37:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:53,614 INFO L93 Difference]: Finished difference Result 7583 states and 9633 transitions. [2023-12-19 01:37:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:37:53,615 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 01:37:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:53,626 INFO L225 Difference]: With dead ends: 7583 [2023-12-19 01:37:53,626 INFO L226 Difference]: Without dead ends: 3342 [2023-12-19 01:37:53,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:53,633 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1653 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 1069 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:37:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2023-12-19 01:37:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2627. [2023-12-19 01:37:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2064 states have (on average 1.3255813953488371) internal successors, (2736), 2093 states have internal predecessors, (2736), 292 states have call successors, (292), 232 states have call predecessors, (292), 269 states have return successors, (369), 304 states have call predecessors, (369), 289 states have call successors, (369) [2023-12-19 01:37:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3397 transitions. [2023-12-19 01:37:53,763 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3397 transitions. Word has length 71 [2023-12-19 01:37:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:53,764 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 3397 transitions. [2023-12-19 01:37:53,765 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 01:37:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3397 transitions. [2023-12-19 01:37:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:37:53,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:53,766 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 01:37:53,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:37:53,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:53,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1086181570, now seen corresponding path program 1 times [2023-12-19 01:37:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814937397] [2023-12-19 01:37:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:53,901 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 01:37:53,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814937397] [2023-12-19 01:37:53,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814937397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:53,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:53,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:37:53,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357828119] [2023-12-19 01:37:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:37:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:37:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:37:53,903 INFO L87 Difference]: Start difference. First operand 2627 states and 3397 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 01:37:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:55,075 INFO L93 Difference]: Finished difference Result 7185 states and 9032 transitions. [2023-12-19 01:37:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:37:55,076 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 01:37:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:55,099 INFO L225 Difference]: With dead ends: 7185 [2023-12-19 01:37:55,099 INFO L226 Difference]: Without dead ends: 4307 [2023-12-19 01:37:55,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-19 01:37:55,106 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1095 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:55,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2325 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:37:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2023-12-19 01:37:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4031. [2023-12-19 01:37:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 3105 states have (on average 1.279549114331723) internal successors, (3973), 3167 states have internal predecessors, (3973), 458 states have call successors, (458), 374 states have call predecessors, (458), 466 states have return successors, (661), 492 states have call predecessors, (661), 455 states have call successors, (661) [2023-12-19 01:37:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 5092 transitions. [2023-12-19 01:37:55,296 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 5092 transitions. Word has length 76 [2023-12-19 01:37:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:55,296 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 5092 transitions. [2023-12-19 01:37:55,296 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 01:37:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 5092 transitions. [2023-12-19 01:37:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:37:55,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:55,299 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 01:37:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:37:55,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -967419781, now seen corresponding path program 1 times [2023-12-19 01:37:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032937336] [2023-12-19 01:37:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:37:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:55,442 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 01:37:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032937336] [2023-12-19 01:37:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032937336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:37:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082887849] [2023-12-19 01:37:55,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:37:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:37:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:37:55,444 INFO L87 Difference]: Start difference. First operand 4031 states and 5092 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 01:37:56,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:56,628 INFO L93 Difference]: Finished difference Result 6861 states and 8540 transitions. [2023-12-19 01:37:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:37:56,629 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 01:37:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:56,640 INFO L225 Difference]: With dead ends: 6861 [2023-12-19 01:37:56,640 INFO L226 Difference]: Without dead ends: 3573 [2023-12-19 01:37:56,645 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 01:37:56,646 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1949 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:56,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 1992 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:37:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-12-19 01:37:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3157. [2023-12-19 01:37:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 2430 states have (on average 1.2707818930041153) internal successors, (3088), 2481 states have internal predecessors, (3088), 357 states have call successors, (357), 286 states have call predecessors, (357), 368 states have return successors, (484), 392 states have call predecessors, (484), 354 states have call successors, (484) [2023-12-19 01:37:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 3929 transitions. [2023-12-19 01:37:56,799 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 3929 transitions. Word has length 86 [2023-12-19 01:37:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:56,799 INFO L495 AbstractCegarLoop]: Abstraction has 3157 states and 3929 transitions. [2023-12-19 01:37:56,799 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 01:37:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 3929 transitions. [2023-12-19 01:37:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:37:56,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:56,803 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 01:37:56,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:37:56,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:56,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1382957003, now seen corresponding path program 1 times [2023-12-19 01:37:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975681288] [2023-12-19 01:37:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 01:37:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 01:37:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 01:37:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 01:37:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 01:37:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 01:37:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:56,958 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 01:37:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:56,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975681288] [2023-12-19 01:37:56,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975681288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:56,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566550739] [2023-12-19 01:37:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:56,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:56,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:56,974 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 01:37:56,997 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 01:37:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 01:37:57,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:37:57,137 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 01:37:57,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:37:57,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566550739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:57,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:37:57,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-19 01:37:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255166325] [2023-12-19 01:37:57,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:37:57,139 INFO L87 Difference]: Start difference. First operand 3157 states and 3929 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 01:37:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:57,330 INFO L93 Difference]: Finished difference Result 4770 states and 5896 transitions. [2023-12-19 01:37:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:57,330 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 01:37:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:57,335 INFO L225 Difference]: With dead ends: 4770 [2023-12-19 01:37:57,335 INFO L226 Difference]: Without dead ends: 2003 [2023-12-19 01:37:57,339 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 01:37:57,339 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 32 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:57,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3374 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:37:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2023-12-19 01:37:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1887. [2023-12-19 01:37:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1527 states have (on average 1.3012442698100852) internal successors, (1987), 1544 states have internal predecessors, (1987), 184 states have call successors, (184), 134 states have call predecessors, (184), 174 states have return successors, (244), 209 states have call predecessors, (244), 181 states have call successors, (244) [2023-12-19 01:37:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2415 transitions. [2023-12-19 01:37:57,417 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2415 transitions. Word has length 131 [2023-12-19 01:37:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:57,417 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2415 transitions. [2023-12-19 01:37:57,418 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 01:37:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2415 transitions. [2023-12-19 01:37:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 01:37:57,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:57,420 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 01:37:57,429 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 01:37:57,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 01:37:57,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:57,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1968087991, now seen corresponding path program 1 times [2023-12-19 01:37:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:57,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771565616] [2023-12-19 01:37:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:37:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 01:37:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 01:37:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 01:37:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:37:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 01:37:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:37:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:57,706 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 01:37:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771565616] [2023-12-19 01:37:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771565616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:37:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466978843] [2023-12-19 01:37:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:37:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:37:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:37:57,708 INFO L87 Difference]: Start difference. First operand 1887 states and 2415 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 01:37:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:58,457 INFO L93 Difference]: Finished difference Result 1945 states and 2475 transitions. [2023-12-19 01:37:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:37:58,458 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 01:37:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:58,463 INFO L225 Difference]: With dead ends: 1945 [2023-12-19 01:37:58,463 INFO L226 Difference]: Without dead ends: 1690 [2023-12-19 01:37:58,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:37:58,464 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 757 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:58,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1531 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:37:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2023-12-19 01:37:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1635. [2023-12-19 01:37:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1337 states have (on average 1.3193717277486912) internal successors, (1764), 1351 states have internal predecessors, (1764), 154 states have call successors, (154), 108 states have call predecessors, (154), 142 states have return successors, (204), 176 states have call predecessors, (204), 151 states have call successors, (204) [2023-12-19 01:37:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2122 transitions. [2023-12-19 01:37:58,581 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2122 transitions. Word has length 133 [2023-12-19 01:37:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:58,581 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2122 transitions. [2023-12-19 01:37:58,581 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 01:37:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2122 transitions. [2023-12-19 01:37:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:37:58,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:58,584 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 01:37:58,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:37:58,584 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:58,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1783040043, now seen corresponding path program 1 times [2023-12-19 01:37:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113454695] [2023-12-19 01:37:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:37:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 01:37:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:37:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 01:37:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:37:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 01:37:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:58,673 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 01:37:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113454695] [2023-12-19 01:37:58,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113454695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:37:58,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:37:58,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:37:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328556597] [2023-12-19 01:37:58,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:37:58,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:37:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:37:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:37:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:37:58,674 INFO L87 Difference]: Start difference. First operand 1635 states and 2122 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 01:37:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:37:59,624 INFO L93 Difference]: Finished difference Result 2790 states and 3510 transitions. [2023-12-19 01:37:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:37:59,625 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 01:37:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:37:59,629 INFO L225 Difference]: With dead ends: 2790 [2023-12-19 01:37:59,629 INFO L226 Difference]: Without dead ends: 1628 [2023-12-19 01:37:59,632 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 01:37:59,632 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 688 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:37:59,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1979 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:37:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2023-12-19 01:37:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1543. [2023-12-19 01:37:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1267 states have (on average 1.3267561168113655) internal successors, (1681), 1281 states have internal predecessors, (1681), 143 states have call successors, (143), 99 states have call predecessors, (143), 131 states have return successors, (188), 163 states have call predecessors, (188), 140 states have call successors, (188) [2023-12-19 01:37:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2012 transitions. [2023-12-19 01:37:59,695 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2012 transitions. Word has length 145 [2023-12-19 01:37:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:37:59,695 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2012 transitions. [2023-12-19 01:37:59,695 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 01:37:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2012 transitions. [2023-12-19 01:37:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:37:59,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:37:59,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:37:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:37:59,697 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:37:59,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:37:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1937284978, now seen corresponding path program 1 times [2023-12-19 01:37:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:37:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997015589] [2023-12-19 01:37:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:37:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:37:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:37:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:37:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:37:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:37:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:37:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:37:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 01:37:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 01:37:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:37:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:37:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:37:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:37:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 01:37:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:37:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-19 01:37:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:37:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997015589] [2023-12-19 01:37:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997015589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:37:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292233911] [2023-12-19 01:37:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:37:59,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:37:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:37:59,933 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 01:37:59,996 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 01:38:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:00,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 01:38:00,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:38:00,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:38:00,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292233911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:00,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:38:00,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-19 01:38:00,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288966189] [2023-12-19 01:38:00,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:38:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:38:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:00,273 INFO L87 Difference]: Start difference. First operand 1543 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 01:38:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:01,112 INFO L93 Difference]: Finished difference Result 3680 states and 4633 transitions. [2023-12-19 01:38:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:38:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2023-12-19 01:38:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:01,117 INFO L225 Difference]: With dead ends: 3680 [2023-12-19 01:38:01,118 INFO L226 Difference]: Without dead ends: 2398 [2023-12-19 01:38:01,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:38:01,120 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 376 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:01,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1016 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:38:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2023-12-19 01:38:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2359. [2023-12-19 01:38:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1931 states have (on average 1.2692905230450544) internal successors, (2451), 1950 states have internal predecessors, (2451), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-12-19 01:38:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2972 transitions. [2023-12-19 01:38:01,359 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2972 transitions. Word has length 147 [2023-12-19 01:38:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:01,360 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 2972 transitions. [2023-12-19 01:38:01,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 01:38:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2972 transitions. [2023-12-19 01:38:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:01,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:01,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:01,386 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 01:38:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:01,563 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:01,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -219207472, now seen corresponding path program 1 times [2023-12-19 01:38:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147177529] [2023-12-19 01:38:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:01,766 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 01:38:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147177529] [2023-12-19 01:38:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147177529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:01,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526696808] [2023-12-19 01:38:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:01,769 INFO L87 Difference]: Start difference. First operand 2359 states and 2972 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:04,894 INFO L93 Difference]: Finished difference Result 2943 states and 3960 transitions. [2023-12-19 01:38:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:38:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:04,901 INFO L225 Difference]: With dead ends: 2943 [2023-12-19 01:38:04,902 INFO L226 Difference]: Without dead ends: 2571 [2023-12-19 01:38:04,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:38:04,904 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1463 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:04,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1564 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 01:38:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-12-19 01:38:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2361. [2023-12-19 01:38:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1933 states have (on average 1.2684945680289705) internal successors, (2452), 1952 states have internal predecessors, (2452), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-12-19 01:38:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 2973 transitions. [2023-12-19 01:38:05,170 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 2973 transitions. Word has length 172 [2023-12-19 01:38:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:05,170 INFO L495 AbstractCegarLoop]: Abstraction has 2361 states and 2973 transitions. [2023-12-19 01:38:05,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 2973 transitions. [2023-12-19 01:38:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:05,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:05,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:05,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:38:05,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:05,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -609544812, now seen corresponding path program 1 times [2023-12-19 01:38:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390681820] [2023-12-19 01:38:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,400 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 01:38:05,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390681820] [2023-12-19 01:38:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390681820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349408757] [2023-12-19 01:38:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:05,402 INFO L87 Difference]: Start difference. First operand 2361 states and 2973 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:08,330 INFO L93 Difference]: Finished difference Result 2911 states and 3904 transitions. [2023-12-19 01:38:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:38:08,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:08,335 INFO L225 Difference]: With dead ends: 2911 [2023-12-19 01:38:08,335 INFO L226 Difference]: Without dead ends: 2545 [2023-12-19 01:38:08,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:38:08,337 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1319 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:08,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1560 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:38:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-12-19 01:38:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2363. [2023-12-19 01:38:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1935 states have (on average 1.2677002583979329) internal successors, (2453), 1954 states have internal predecessors, (2453), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-12-19 01:38:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 2974 transitions. [2023-12-19 01:38:08,510 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 2974 transitions. Word has length 172 [2023-12-19 01:38:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:08,510 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 2974 transitions. [2023-12-19 01:38:08,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 2974 transitions. [2023-12-19 01:38:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:08,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:08,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:08,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:38:08,513 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:08,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:08,513 INFO L85 PathProgramCache]: Analyzing trace with hash 443181588, now seen corresponding path program 1 times [2023-12-19 01:38:08,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:08,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423229546] [2023-12-19 01:38:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:08,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,753 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 01:38:08,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:08,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423229546] [2023-12-19 01:38:08,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423229546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:08,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:08,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:38:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360515122] [2023-12-19 01:38:08,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:08,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:38:08,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:38:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:38:08,755 INFO L87 Difference]: Start difference. First operand 2363 states and 2974 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 6 states have internal predecessors, (161), 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 01:38:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:13,181 INFO L93 Difference]: Finished difference Result 3454 states and 4820 transitions. [2023-12-19 01:38:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 01:38:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 6 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:13,189 INFO L225 Difference]: With dead ends: 3454 [2023-12-19 01:38:13,189 INFO L226 Difference]: Without dead ends: 3093 [2023-12-19 01:38:13,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-19 01:38:13,191 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1997 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:13,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 2026 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:38:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2023-12-19 01:38:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2748. [2023-12-19 01:38:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2291 states have (on average 1.3260584897424705) internal successors, (3038), 2311 states have internal predecessors, (3038), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2023-12-19 01:38:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3606 transitions. [2023-12-19 01:38:13,418 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3606 transitions. Word has length 172 [2023-12-19 01:38:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:13,418 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 3606 transitions. [2023-12-19 01:38:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 6 states have internal predecessors, (161), 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 01:38:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3606 transitions. [2023-12-19 01:38:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:13,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:13,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:13,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:38:13,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:13,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash -938222642, now seen corresponding path program 1 times [2023-12-19 01:38:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813080914] [2023-12-19 01:38:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813080914] [2023-12-19 01:38:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813080914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590695354] [2023-12-19 01:38:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:13,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:13,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:13,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:13,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:13,642 INFO L87 Difference]: Start difference. First operand 2748 states and 3606 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:17,914 INFO L93 Difference]: Finished difference Result 4337 states and 6252 transitions. [2023-12-19 01:38:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:17,920 INFO L225 Difference]: With dead ends: 4337 [2023-12-19 01:38:17,921 INFO L226 Difference]: Without dead ends: 3591 [2023-12-19 01:38:17,922 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 01:38:17,923 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1837 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:17,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 2458 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 01:38:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2023-12-19 01:38:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3102. [2023-12-19 01:38:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 2616 states have (on average 1.3620030581039755) internal successors, (3563), 2637 states have internal predecessors, (3563), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2023-12-19 01:38:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 4177 transitions. [2023-12-19 01:38:18,127 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 4177 transitions. Word has length 172 [2023-12-19 01:38:18,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:18,127 INFO L495 AbstractCegarLoop]: Abstraction has 3102 states and 4177 transitions. [2023-12-19 01:38:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 4177 transitions. [2023-12-19 01:38:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:18,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:18,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:38:18,129 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -552360240, now seen corresponding path program 1 times [2023-12-19 01:38:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444182805] [2023-12-19 01:38:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:18,334 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 01:38:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444182805] [2023-12-19 01:38:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444182805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922885499] [2023-12-19 01:38:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:18,335 INFO L87 Difference]: Start difference. First operand 3102 states and 4177 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:22,600 INFO L93 Difference]: Finished difference Result 5708 states and 8509 transitions. [2023-12-19 01:38:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:22,610 INFO L225 Difference]: With dead ends: 5708 [2023-12-19 01:38:22,610 INFO L226 Difference]: Without dead ends: 4608 [2023-12-19 01:38:22,615 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 01:38:22,615 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1835 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 2456 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 01:38:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2023-12-19 01:38:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 3811. [2023-12-19 01:38:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3267 states have (on average 1.4123048668503213) internal successors, (4614), 3290 states have internal predecessors, (4614), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-12-19 01:38:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 5324 transitions. [2023-12-19 01:38:22,855 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 5324 transitions. Word has length 172 [2023-12-19 01:38:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 5324 transitions. [2023-12-19 01:38:22,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 5324 transitions. [2023-12-19 01:38:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:22,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:22,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:38:22,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:22,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -817007730, now seen corresponding path program 1 times [2023-12-19 01:38:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044006768] [2023-12-19 01:38:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:23,087 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 01:38:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044006768] [2023-12-19 01:38:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044006768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:23,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:23,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119432845] [2023-12-19 01:38:23,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:23,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:23,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:23,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:23,090 INFO L87 Difference]: Start difference. First operand 3811 states and 5324 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:25,033 INFO L93 Difference]: Finished difference Result 6405 states and 9647 transitions. [2023-12-19 01:38:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:25,060 INFO L225 Difference]: With dead ends: 6405 [2023-12-19 01:38:25,060 INFO L226 Difference]: Without dead ends: 4596 [2023-12-19 01:38:25,064 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 01:38:25,064 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1579 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:25,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 1143 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:38:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2023-12-19 01:38:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 3811. [2023-12-19 01:38:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3267 states have (on average 1.4107744107744107) internal successors, (4609), 3290 states have internal predecessors, (4609), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-12-19 01:38:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 5319 transitions. [2023-12-19 01:38:25,322 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 5319 transitions. Word has length 172 [2023-12-19 01:38:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:25,322 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 5319 transitions. [2023-12-19 01:38:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 5319 transitions. [2023-12-19 01:38:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:25,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:25,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:25,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:38:25,326 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:25,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117904, now seen corresponding path program 1 times [2023-12-19 01:38:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:25,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117332390] [2023-12-19 01:38:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:25,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:25,531 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 01:38:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117332390] [2023-12-19 01:38:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117332390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:25,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048197764] [2023-12-19 01:38:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:25,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:25,533 INFO L87 Difference]: Start difference. First operand 3811 states and 5319 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:27,445 INFO L93 Difference]: Finished difference Result 6399 states and 9621 transitions. [2023-12-19 01:38:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:27,455 INFO L225 Difference]: With dead ends: 6399 [2023-12-19 01:38:27,455 INFO L226 Difference]: Without dead ends: 4590 [2023-12-19 01:38:27,460 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 01:38:27,460 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1465 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1367 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:38:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2023-12-19 01:38:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 3811. [2023-12-19 01:38:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3267 states have (on average 1.4092439546985) internal successors, (4604), 3290 states have internal predecessors, (4604), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-12-19 01:38:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 5314 transitions. [2023-12-19 01:38:27,787 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 5314 transitions. Word has length 172 [2023-12-19 01:38:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:27,787 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 5314 transitions. [2023-12-19 01:38:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 5314 transitions. [2023-12-19 01:38:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:27,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:27,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:27,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:38:27,792 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:27,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -209061042, now seen corresponding path program 1 times [2023-12-19 01:38:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409708248] [2023-12-19 01:38:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,067 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 01:38:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409708248] [2023-12-19 01:38:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409708248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459141089] [2023-12-19 01:38:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:28,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:28,068 INFO L87 Difference]: Start difference. First operand 3811 states and 5314 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:31,554 INFO L93 Difference]: Finished difference Result 8318 states and 12732 transitions. [2023-12-19 01:38:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:31,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:31,569 INFO L225 Difference]: With dead ends: 8318 [2023-12-19 01:38:31,569 INFO L226 Difference]: Without dead ends: 6509 [2023-12-19 01:38:31,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:38:31,573 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1821 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:31,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 2456 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:38:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2023-12-19 01:38:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 5243. [2023-12-19 01:38:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 4583 states have (on average 1.4658520619681432) internal successors, (6718), 4610 states have internal predecessors, (6718), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2023-12-19 01:38:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 7626 transitions. [2023-12-19 01:38:31,906 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 7626 transitions. Word has length 172 [2023-12-19 01:38:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:31,906 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 7626 transitions. [2023-12-19 01:38:31,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 7626 transitions. [2023-12-19 01:38:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:31,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:31,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:31,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:38:31,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:31,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash 129226508, now seen corresponding path program 1 times [2023-12-19 01:38:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765534321] [2023-12-19 01:38:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:31,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,083 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 01:38:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:32,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765534321] [2023-12-19 01:38:32,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765534321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:32,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150092826] [2023-12-19 01:38:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:32,085 INFO L87 Difference]: Start difference. First operand 5243 states and 7626 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:33,648 INFO L93 Difference]: Finished difference Result 9777 states and 15125 transitions. [2023-12-19 01:38:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:33,695 INFO L225 Difference]: With dead ends: 9777 [2023-12-19 01:38:33,695 INFO L226 Difference]: Without dead ends: 6536 [2023-12-19 01:38:33,702 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 01:38:33,716 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1580 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:33,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 1143 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:38:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2023-12-19 01:38:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 5243. [2023-12-19 01:38:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 4583 states have (on average 1.4638882827842026) internal successors, (6709), 4610 states have internal predecessors, (6709), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2023-12-19 01:38:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 7617 transitions. [2023-12-19 01:38:34,076 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 7617 transitions. Word has length 172 [2023-12-19 01:38:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:34,076 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 7617 transitions. [2023-12-19 01:38:34,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 7617 transitions. [2023-12-19 01:38:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:34,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:34,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:34,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:38:34,080 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:34,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 555781006, now seen corresponding path program 1 times [2023-12-19 01:38:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:34,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093001339] [2023-12-19 01:38:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:34,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093001339] [2023-12-19 01:38:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093001339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232813943] [2023-12-19 01:38:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:34,279 INFO L87 Difference]: Start difference. First operand 5243 states and 7617 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:37,546 INFO L93 Difference]: Finished difference Result 13566 states and 21250 transitions. [2023-12-19 01:38:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:37,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:37,607 INFO L225 Difference]: With dead ends: 13566 [2023-12-19 01:38:37,607 INFO L226 Difference]: Without dead ends: 10325 [2023-12-19 01:38:37,616 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 01:38:37,620 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1813 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:37,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 2456 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:38:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10325 states. [2023-12-19 01:38:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10325 to 8117. [2023-12-19 01:38:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8117 states, 7225 states have (on average 1.5137716262975778) internal successors, (10937), 7260 states have internal predecessors, (10937), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2023-12-19 01:38:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8117 states to 8117 states and 12259 transitions. [2023-12-19 01:38:38,098 INFO L78 Accepts]: Start accepts. Automaton has 8117 states and 12259 transitions. Word has length 172 [2023-12-19 01:38:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:38,098 INFO L495 AbstractCegarLoop]: Abstraction has 8117 states and 12259 transitions. [2023-12-19 01:38:38,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 8117 states and 12259 transitions. [2023-12-19 01:38:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:38,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:38,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:38,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:38:38,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:38,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 15351500, now seen corresponding path program 1 times [2023-12-19 01:38:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661520296] [2023-12-19 01:38:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:38,302 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 01:38:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661520296] [2023-12-19 01:38:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661520296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:38,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448887968] [2023-12-19 01:38:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:38,303 INFO L87 Difference]: Start difference. First operand 8117 states and 12259 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:42,002 INFO L93 Difference]: Finished difference Result 24078 states and 38418 transitions. [2023-12-19 01:38:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:42,057 INFO L225 Difference]: With dead ends: 24078 [2023-12-19 01:38:42,057 INFO L226 Difference]: Without dead ends: 17963 [2023-12-19 01:38:42,075 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 01:38:42,079 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1812 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4128 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:42,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1842 Valid, 2456 Invalid, 4231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4128 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:38:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17963 states. [2023-12-19 01:38:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17963 to 13878. [2023-12-19 01:38:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13878 states, 12522 states have (on average 1.550151732950008) internal successors, (19411), 12573 states have internal predecessors, (19411), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2023-12-19 01:38:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13878 states to 13878 states and 21615 transitions. [2023-12-19 01:38:42,898 INFO L78 Accepts]: Start accepts. Automaton has 13878 states and 21615 transitions. Word has length 172 [2023-12-19 01:38:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:42,899 INFO L495 AbstractCegarLoop]: Abstraction has 13878 states and 21615 transitions. [2023-12-19 01:38:42,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13878 states and 21615 transitions. [2023-12-19 01:38:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:42,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:42,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:42,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:38:42,906 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:42,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash -140629042, now seen corresponding path program 1 times [2023-12-19 01:38:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:42,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415101010] [2023-12-19 01:38:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:43,095 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 01:38:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415101010] [2023-12-19 01:38:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415101010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:43,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301156139] [2023-12-19 01:38:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:43,096 INFO L87 Difference]: Start difference. First operand 13878 states and 21615 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:48,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:48,294 INFO L93 Difference]: Finished difference Result 45101 states and 72944 transitions. [2023-12-19 01:38:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:48,398 INFO L225 Difference]: With dead ends: 45101 [2023-12-19 01:38:48,399 INFO L226 Difference]: Without dead ends: 33225 [2023-12-19 01:38:48,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:38:48,437 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1811 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:48,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 2456 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 01:38:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33225 states. [2023-12-19 01:38:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33225 to 25431. [2023-12-19 01:38:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25431 states, 23147 states have (on average 1.5727740095908758) internal successors, (36405), 23230 states have internal predecessors, (36405), 1625 states have call successors, (1625), 538 states have call predecessors, (1625), 657 states have return successors, (2505), 1726 states have call predecessors, (2505), 1622 states have call successors, (2505) [2023-12-19 01:38:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25431 states to 25431 states and 40535 transitions. [2023-12-19 01:38:49,966 INFO L78 Accepts]: Start accepts. Automaton has 25431 states and 40535 transitions. Word has length 172 [2023-12-19 01:38:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:49,966 INFO L495 AbstractCegarLoop]: Abstraction has 25431 states and 40535 transitions. [2023-12-19 01:38:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 25431 states and 40535 transitions. [2023-12-19 01:38:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:49,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:49,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:49,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:38:49,979 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 269981324, now seen corresponding path program 1 times [2023-12-19 01:38:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067149125] [2023-12-19 01:38:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:49,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:50,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067149125] [2023-12-19 01:38:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067149125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:50,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751350067] [2023-12-19 01:38:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:50,207 INFO L87 Difference]: Start difference. First operand 25431 states and 40535 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:53,749 INFO L93 Difference]: Finished difference Result 57145 states and 93492 transitions. [2023-12-19 01:38:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:53,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:53,842 INFO L225 Difference]: With dead ends: 57145 [2023-12-19 01:38:53,842 INFO L226 Difference]: Without dead ends: 33716 [2023-12-19 01:38:53,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:53,886 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1581 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:53,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 1143 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:38:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33716 states. [2023-12-19 01:38:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33716 to 25431. [2023-12-19 01:38:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25431 states, 23147 states have (on average 1.5699658703071673) internal successors, (36340), 23230 states have internal predecessors, (36340), 1625 states have call successors, (1625), 538 states have call predecessors, (1625), 657 states have return successors, (2505), 1726 states have call predecessors, (2505), 1622 states have call successors, (2505) [2023-12-19 01:38:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25431 states to 25431 states and 40470 transitions. [2023-12-19 01:38:55,505 INFO L78 Accepts]: Start accepts. Automaton has 25431 states and 40470 transitions. Word has length 172 [2023-12-19 01:38:55,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:55,505 INFO L495 AbstractCegarLoop]: Abstraction has 25431 states and 40470 transitions. [2023-12-19 01:38:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 25431 states and 40470 transitions. [2023-12-19 01:38:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:38:55,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:55,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:55,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:38:55,520 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:55,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1517888498, now seen corresponding path program 1 times [2023-12-19 01:38:55,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:55,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959059612] [2023-12-19 01:38:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:55,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:38:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:38:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:38:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:38:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:55,723 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 01:38:55,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959059612] [2023-12-19 01:38:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959059612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430565705] [2023-12-19 01:38:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:55,725 INFO L87 Difference]: Start difference. First operand 25431 states and 40470 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:38:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:59,190 INFO L93 Difference]: Finished difference Result 57079 states and 93165 transitions. [2023-12-19 01:38:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:38:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:59,307 INFO L225 Difference]: With dead ends: 57079 [2023-12-19 01:38:59,307 INFO L226 Difference]: Without dead ends: 33650 [2023-12-19 01:38:59,358 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 01:38:59,372 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1435 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:59,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1367 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:38:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33650 states. [2023-12-19 01:39:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33650 to 25431. [2023-12-19 01:39:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25431 states, 23147 states have (on average 1.5671577310234588) internal successors, (36275), 23230 states have internal predecessors, (36275), 1625 states have call successors, (1625), 538 states have call predecessors, (1625), 657 states have return successors, (2505), 1726 states have call predecessors, (2505), 1622 states have call successors, (2505) [2023-12-19 01:39:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25431 states to 25431 states and 40405 transitions. [2023-12-19 01:39:01,275 INFO L78 Accepts]: Start accepts. Automaton has 25431 states and 40405 transitions. Word has length 172 [2023-12-19 01:39:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:01,276 INFO L495 AbstractCegarLoop]: Abstraction has 25431 states and 40405 transitions. [2023-12-19 01:39:01,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25431 states and 40405 transitions. [2023-12-19 01:39:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:39:01,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:01,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:01,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:39:01,315 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:01,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 641195596, now seen corresponding path program 1 times [2023-12-19 01:39:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:01,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480117379] [2023-12-19 01:39:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:01,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:39:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:39:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:39:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:39:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,810 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 01:39:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:01,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480117379] [2023-12-19 01:39:01,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480117379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820653568] [2023-12-19 01:39:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:01,812 INFO L87 Difference]: Start difference. First operand 25431 states and 40405 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:08,876 INFO L93 Difference]: Finished difference Result 98214 states and 159412 transitions. [2023-12-19 01:39:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:39:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:09,121 INFO L225 Difference]: With dead ends: 98214 [2023-12-19 01:39:09,122 INFO L226 Difference]: Without dead ends: 74785 [2023-12-19 01:39:09,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:09,181 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1917 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:09,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 2449 Invalid, 4898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 01:39:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74785 states. [2023-12-19 01:39:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74785 to 48667. [2023-12-19 01:39:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48667 states, 44591 states have (on average 1.5793994303783274) internal successors, (70427), 44738 states have internal predecessors, (70427), 2969 states have call successors, (2969), 922 states have call predecessors, (2969), 1105 states have return successors, (5371), 3134 states have call predecessors, (5371), 2966 states have call successors, (5371) [2023-12-19 01:39:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48667 states to 48667 states and 78767 transitions. [2023-12-19 01:39:12,315 INFO L78 Accepts]: Start accepts. Automaton has 48667 states and 78767 transitions. Word has length 172 [2023-12-19 01:39:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:12,315 INFO L495 AbstractCegarLoop]: Abstraction has 48667 states and 78767 transitions. [2023-12-19 01:39:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 48667 states and 78767 transitions. [2023-12-19 01:39:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:39:12,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:12,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:39:12,334 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:12,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1059084298, now seen corresponding path program 1 times [2023-12-19 01:39:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731168097] [2023-12-19 01:39:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:39:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:39:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:39:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:39:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:12,534 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 01:39:12,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:12,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731168097] [2023-12-19 01:39:12,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731168097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:12,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:12,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:12,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055056621] [2023-12-19 01:39:12,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:12,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:12,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:12,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:12,536 INFO L87 Difference]: Start difference. First operand 48667 states and 78767 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:21,146 INFO L93 Difference]: Finished difference Result 191784 states and 314784 transitions. [2023-12-19 01:39:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:39:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:22,048 INFO L225 Difference]: With dead ends: 191784 [2023-12-19 01:39:22,049 INFO L226 Difference]: Without dead ends: 145119 [2023-12-19 01:39:22,167 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 01:39:22,177 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 2230 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:22,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 2445 Invalid, 4115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 01:39:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145119 states. [2023-12-19 01:39:28,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145119 to 93852. [2023-12-19 01:39:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93852 states, 86256 states have (on average 1.5829739380448897) internal successors, (136541), 86531 states have internal predecessors, (136541), 5593 states have call successors, (5593), 1690 states have call predecessors, (5593), 2001 states have return successors, (12497), 5886 states have call predecessors, (12497), 5590 states have call successors, (12497) [2023-12-19 01:39:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93852 states to 93852 states and 154631 transitions. [2023-12-19 01:39:28,957 INFO L78 Accepts]: Start accepts. Automaton has 93852 states and 154631 transitions. Word has length 172 [2023-12-19 01:39:28,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:28,957 INFO L495 AbstractCegarLoop]: Abstraction has 93852 states and 154631 transitions. [2023-12-19 01:39:28,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 93852 states and 154631 transitions. [2023-12-19 01:39:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:39:28,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:28,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:28,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 01:39:28,996 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:28,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1836929396, now seen corresponding path program 1 times [2023-12-19 01:39:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120490314] [2023-12-19 01:39:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:28,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:39:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:39:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:39:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:39:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:29,331 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 01:39:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120490314] [2023-12-19 01:39:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120490314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189572390] [2023-12-19 01:39:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:29,332 INFO L87 Difference]: Start difference. First operand 93852 states and 154631 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:43,225 INFO L93 Difference]: Finished difference Result 371239 states and 618550 transitions. [2023-12-19 01:39:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:39:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:44,549 INFO L225 Difference]: With dead ends: 371239 [2023-12-19 01:39:44,549 INFO L226 Difference]: Without dead ends: 279389 [2023-12-19 01:39:44,913 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 01:39:44,913 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1897 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:44,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 2449 Invalid, 4783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 01:39:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279389 states. [2023-12-19 01:39:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279389 to 185501. [2023-12-19 01:39:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185501 states, 170993 states have (on average 1.5867725579409684) internal successors, (271327), 171524 states have internal predecessors, (271327), 10713 states have call successors, (10713), 3226 states have call predecessors, (10713), 3793 states have return successors, (30995), 11262 states have call predecessors, (30995), 10710 states have call successors, (30995) [2023-12-19 01:39:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185501 states to 185501 states and 313035 transitions. [2023-12-19 01:39:57,800 INFO L78 Accepts]: Start accepts. Automaton has 185501 states and 313035 transitions. Word has length 172 [2023-12-19 01:39:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:57,800 INFO L495 AbstractCegarLoop]: Abstraction has 185501 states and 313035 transitions. [2023-12-19 01:39:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:39:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 185501 states and 313035 transitions. [2023-12-19 01:39:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:39:57,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:57,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:57,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 01:39:57,868 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:57,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash 840597450, now seen corresponding path program 1 times [2023-12-19 01:39:57,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:57,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351288812] [2023-12-19 01:39:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:39:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:39:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:39:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:39:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:58,301 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 01:39:58,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:58,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351288812] [2023-12-19 01:39:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351288812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:58,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:58,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883576817] [2023-12-19 01:39:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:58,303 INFO L87 Difference]: Start difference. First operand 185501 states and 313035 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 01:40:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:40:22,739 INFO L93 Difference]: Finished difference Result 733990 states and 1249212 transitions. [2023-12-19 01:40:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:40:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-19 01:40:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:40:26,638 INFO L225 Difference]: With dead ends: 733990 [2023-12-19 01:40:26,638 INFO L226 Difference]: Without dead ends: 550491 [2023-12-19 01:40:27,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:40:27,603 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 2159 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:40:27,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 2449 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 01:40:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550491 states.