/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.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:07:08,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:07:08,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:07:08,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:07:08,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:07:08,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:07:08,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:07:08,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:07:08,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:07:08,157 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:07:08,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:07:08,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:07:08,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:07:08,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:07:08,159 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:07:08,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:07:08,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:07:08,160 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:07:08,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:07:08,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:07:08,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:07:08,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:07:08,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:07:08,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:07:08,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:07:08,162 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:07:08,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:07:08,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:07:08,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:07:08,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:07:08,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:07:08,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:07:08,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:07:08,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:07:08,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:07:08,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:07:08,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:07:08,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:07:08,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:07:08,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:07:08,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:07:08,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:07:08,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:07:08,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:07:08,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:07:08,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:07:08,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:07:08,434 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:07:08,434 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:07:08,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2023-12-15 18:07:09,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:07:09,908 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:07:09,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2023-12-15 18:07:09,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14884b4f/b866702b26d04fd1a912eb4a1573edd3/FLAG8459ff50e [2023-12-15 18:07:09,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14884b4f/b866702b26d04fd1a912eb4a1573edd3 [2023-12-15 18:07:09,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:07:09,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:07:09,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:07:09,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:07:09,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:07:09,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:07:09" (1/1) ... [2023-12-15 18:07:09,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc4f326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:09, skipping insertion in model container [2023-12-15 18:07:09,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:07:09" (1/1) ... [2023-12-15 18:07:10,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:07:10,126 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.09.cil-2.c[914,927] [2023-12-15 18:07:10,169 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.09.cil-2.c[7115,7128] [2023-12-15 18:07:10,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:07:10,253 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:07:10,280 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.09.cil-2.c[914,927] [2023-12-15 18:07:10,302 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.09.cil-2.c[7115,7128] [2023-12-15 18:07:10,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:07:10,383 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:07:10,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10 WrapperNode [2023-12-15 18:07:10,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:07:10,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:07:10,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:07:10,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:07:10,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,481 INFO L138 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 894 [2023-12-15 18:07:10,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:07:10,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:07:10,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:07:10,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:07:10,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,543 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]. [2023-12-15 18:07:10,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:07:10,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:07:10,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:07:10,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:07:10,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (1/1) ... [2023-12-15 18:07:10,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:07:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:10,641 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) [2023-12-15 18:07:10,664 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 [2023-12-15 18:07:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:07:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:07:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:07:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:07:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:07:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:07:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:07:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:07:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:07:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:07:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:07:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:07:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:07:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:07:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:07:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:07:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:07:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:07:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:07:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:07:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:07:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:07:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:07:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:07:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:07:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:07:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:07:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:07:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:07:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:07:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:07:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:07:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:07:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:07:10,823 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:07:10,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:07:11,564 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:07:11,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:07:11,642 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-15 18:07:11,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:07:11 BoogieIcfgContainer [2023-12-15 18:07:11,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:07:11,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:07:11,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:07:11,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:07:11,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:07:09" (1/3) ... [2023-12-15 18:07:11,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741d008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:07:11, skipping insertion in model container [2023-12-15 18:07:11,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:10" (2/3) ... [2023-12-15 18:07:11,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741d008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:07:11, skipping insertion in model container [2023-12-15 18:07:11,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:07:11" (3/3) ... [2023-12-15 18:07:11,648 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2023-12-15 18:07:11,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:07:11,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:07:11,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:07:11,713 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;@2f08246d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:07:11,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:07:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 321 states have (on average 1.7071651090342679) internal successors, (548), 329 states have internal predecessors, (548), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 18:07:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:11,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:11,739 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] [2023-12-15 18:07:11,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:11,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1317095025, now seen corresponding path program 1 times [2023-12-15 18:07:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469648126] [2023-12-15 18:07:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:12,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469648126] [2023-12-15 18:07:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469648126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:12,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:12,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039703464] [2023-12-15 18:07:12,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:12,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:12,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:12,361 INFO L87 Difference]: Start difference. First operand has 378 states, 321 states have (on average 1.7071651090342679) internal successors, (548), 329 states have internal predecessors, (548), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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) [2023-12-15 18:07:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:13,633 INFO L93 Difference]: Finished difference Result 858 states and 1409 transitions. [2023-12-15 18:07:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:13,636 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 [2023-12-15 18:07:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:13,655 INFO L225 Difference]: With dead ends: 858 [2023-12-15 18:07:13,655 INFO L226 Difference]: Without dead ends: 497 [2023-12-15 18:07:13,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:13,666 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 697 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:13,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1764 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-15 18:07:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 460. [2023-12-15 18:07:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 386 states have (on average 1.5699481865284974) internal successors, (606), 393 states have internal predecessors, (606), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2023-12-15 18:07:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 707 transitions. [2023-12-15 18:07:13,774 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 707 transitions. Word has length 58 [2023-12-15 18:07:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:13,775 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 707 transitions. [2023-12-15 18:07:13,775 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) [2023-12-15 18:07:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 707 transitions. [2023-12-15 18:07:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:13,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:13,784 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] [2023-12-15 18:07:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:07:13,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:13,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1451328689, now seen corresponding path program 1 times [2023-12-15 18:07:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133098076] [2023-12-15 18:07:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133098076] [2023-12-15 18:07:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133098076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:14,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853269611] [2023-12-15 18:07:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:14,030 INFO L87 Difference]: Start difference. First operand 460 states and 707 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:07:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:15,099 INFO L93 Difference]: Finished difference Result 780 states and 1157 transitions. [2023-12-15 18:07:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:07:15,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:07:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:15,104 INFO L225 Difference]: With dead ends: 780 [2023-12-15 18:07:15,104 INFO L226 Difference]: Without dead ends: 618 [2023-12-15 18:07:15,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:07:15,106 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1376 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:15,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1477 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-15 18:07:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 548. [2023-12-15 18:07:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 454 states have (on average 1.5462555066079295) internal successors, (702), 463 states have internal predecessors, (702), 61 states have call successors, (61), 29 states have call predecessors, (61), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2023-12-15 18:07:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 833 transitions. [2023-12-15 18:07:15,139 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 833 transitions. Word has length 58 [2023-12-15 18:07:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:15,139 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 833 transitions. [2023-12-15 18:07:15,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:07:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 833 transitions. [2023-12-15 18:07:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:15,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:15,141 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] [2023-12-15 18:07:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:07:15,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:15,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 476944013, now seen corresponding path program 1 times [2023-12-15 18:07:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195991119] [2023-12-15 18:07:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195991119] [2023-12-15 18:07:15,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195991119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:15,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:15,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553273631] [2023-12-15 18:07:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:15,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:15,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:15,316 INFO L87 Difference]: Start difference. First operand 548 states and 833 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) [2023-12-15 18:07:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:16,396 INFO L93 Difference]: Finished difference Result 824 states and 1222 transitions. [2023-12-15 18:07:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:16,397 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 [2023-12-15 18:07:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:16,400 INFO L225 Difference]: With dead ends: 824 [2023-12-15 18:07:16,401 INFO L226 Difference]: Without dead ends: 580 [2023-12-15 18:07:16,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:16,403 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 505 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:16,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2091 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-15 18:07:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 552. [2023-12-15 18:07:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 457 states have (on average 1.538293216630197) internal successors, (703), 466 states have internal predecessors, (703), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2023-12-15 18:07:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 835 transitions. [2023-12-15 18:07:16,430 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 835 transitions. Word has length 58 [2023-12-15 18:07:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:16,430 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 835 transitions. [2023-12-15 18:07:16,431 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) [2023-12-15 18:07:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 835 transitions. [2023-12-15 18:07:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:16,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:16,432 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] [2023-12-15 18:07:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:07:16,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:16,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1767039285, now seen corresponding path program 1 times [2023-12-15 18:07:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249339618] [2023-12-15 18:07:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:16,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249339618] [2023-12-15 18:07:16,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249339618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:16,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:16,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201550099] [2023-12-15 18:07:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:16,578 INFO L87 Difference]: Start difference. First operand 552 states and 835 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) [2023-12-15 18:07:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:17,586 INFO L93 Difference]: Finished difference Result 842 states and 1240 transitions. [2023-12-15 18:07:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:07:17,587 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 [2023-12-15 18:07:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:17,590 INFO L225 Difference]: With dead ends: 842 [2023-12-15 18:07:17,590 INFO L226 Difference]: Without dead ends: 594 [2023-12-15 18:07:17,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:17,592 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 753 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:17,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1856 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:07:17,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-15 18:07:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 564. [2023-12-15 18:07:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 466 states have (on average 1.5278969957081545) internal successors, (712), 475 states have internal predecessors, (712), 61 states have call successors, (61), 29 states have call predecessors, (61), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2023-12-15 18:07:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 847 transitions. [2023-12-15 18:07:17,622 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 847 transitions. Word has length 58 [2023-12-15 18:07:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:17,623 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 847 transitions. [2023-12-15 18:07:17,623 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) [2023-12-15 18:07:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 847 transitions. [2023-12-15 18:07:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:17,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:17,625 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] [2023-12-15 18:07:17,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:07:17,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:17,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1704999671, now seen corresponding path program 1 times [2023-12-15 18:07:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091691377] [2023-12-15 18:07:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091691377] [2023-12-15 18:07:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091691377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:17,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:17,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743813406] [2023-12-15 18:07:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:17,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:17,773 INFO L87 Difference]: Start difference. First operand 564 states and 847 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:07:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:18,893 INFO L93 Difference]: Finished difference Result 920 states and 1322 transitions. [2023-12-15 18:07:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:07:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:07:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:18,897 INFO L225 Difference]: With dead ends: 920 [2023-12-15 18:07:18,897 INFO L226 Difference]: Without dead ends: 662 [2023-12-15 18:07:18,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:07:18,898 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1138 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:18,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1549 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-15 18:07:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 574. [2023-12-15 18:07:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 474 states have (on average 1.518987341772152) internal successors, (720), 483 states have internal predecessors, (720), 62 states have call successors, (62), 30 states have call predecessors, (62), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2023-12-15 18:07:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 855 transitions. [2023-12-15 18:07:18,923 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 855 transitions. Word has length 58 [2023-12-15 18:07:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:18,923 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 855 transitions. [2023-12-15 18:07:18,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:07:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 855 transitions. [2023-12-15 18:07:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:18,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:18,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:07:18,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:18,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1282297845, now seen corresponding path program 1 times [2023-12-15 18:07:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688433371] [2023-12-15 18:07:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688433371] [2023-12-15 18:07:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688433371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:19,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056339437] [2023-12-15 18:07:19,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:19,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:19,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:19,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:19,016 INFO L87 Difference]: Start difference. First operand 574 states and 855 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 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) [2023-12-15 18:07:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:19,692 INFO L93 Difference]: Finished difference Result 1156 states and 1642 transitions. [2023-12-15 18:07:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:07:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 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 58 [2023-12-15 18:07:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:19,697 INFO L225 Difference]: With dead ends: 1156 [2023-12-15 18:07:19,697 INFO L226 Difference]: Without dead ends: 889 [2023-12-15 18:07:19,698 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 [2023-12-15 18:07:19,701 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1392 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:19,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1026 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-12-15 18:07:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 835. [2023-12-15 18:07:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 669 states have (on average 1.4618834080717489) internal successors, (978), 685 states have internal predecessors, (978), 97 states have call successors, (97), 52 states have call predecessors, (97), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2023-12-15 18:07:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1205 transitions. [2023-12-15 18:07:19,744 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1205 transitions. Word has length 58 [2023-12-15 18:07:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:19,745 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1205 transitions. [2023-12-15 18:07:19,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 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) [2023-12-15 18:07:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1205 transitions. [2023-12-15 18:07:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:07:19,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:19,748 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] [2023-12-15 18:07:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:07:19,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -546497890, now seen corresponding path program 1 times [2023-12-15 18:07:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863064846] [2023-12-15 18:07:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863064846] [2023-12-15 18:07:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863064846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:19,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:19,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098958525] [2023-12-15 18:07:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:19,838 INFO L87 Difference]: Start difference. First operand 835 states and 1205 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-12-15 18:07:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:20,507 INFO L93 Difference]: Finished difference Result 1919 states and 2651 transitions. [2023-12-15 18:07:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 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 59 [2023-12-15 18:07:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:20,515 INFO L225 Difference]: With dead ends: 1919 [2023-12-15 18:07:20,515 INFO L226 Difference]: Without dead ends: 1400 [2023-12-15 18:07:20,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:07:20,518 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1394 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:20,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 827 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-12-15 18:07:20,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1246. [2023-12-15 18:07:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 980 states have (on average 1.4061224489795918) internal successors, (1378), 1003 states have internal predecessors, (1378), 146 states have call successors, (146), 94 states have call predecessors, (146), 118 states have return successors, (200), 155 states have call predecessors, (200), 142 states have call successors, (200) [2023-12-15 18:07:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1724 transitions. [2023-12-15 18:07:20,577 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1724 transitions. Word has length 59 [2023-12-15 18:07:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:20,577 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1724 transitions. [2023-12-15 18:07:20,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-12-15 18:07:20,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1724 transitions. [2023-12-15 18:07:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:07:20,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:20,580 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] [2023-12-15 18:07:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:07:20,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:20,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 211379088, now seen corresponding path program 1 times [2023-12-15 18:07:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277925064] [2023-12-15 18:07:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:20,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277925064] [2023-12-15 18:07:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277925064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491778338] [2023-12-15 18:07:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:20,656 INFO L87 Difference]: Start difference. First operand 1246 states and 1724 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) [2023-12-15 18:07:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:21,452 INFO L93 Difference]: Finished difference Result 3206 states and 4287 transitions. [2023-12-15 18:07:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:21,453 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 [2023-12-15 18:07:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:21,462 INFO L225 Difference]: With dead ends: 3206 [2023-12-15 18:07:21,462 INFO L226 Difference]: Without dead ends: 2246 [2023-12-15 18:07:21,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:21,465 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 964 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:21,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1013 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:07:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2023-12-15 18:07:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2062. [2023-12-15 18:07:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1598 states have (on average 1.3579474342928661) internal successors, (2170), 1627 states have internal predecessors, (2170), 240 states have call successors, (240), 180 states have call predecessors, (240), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2023-12-15 18:07:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2748 transitions. [2023-12-15 18:07:21,562 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2748 transitions. Word has length 60 [2023-12-15 18:07:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:21,563 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 2748 transitions. [2023-12-15 18:07:21,563 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) [2023-12-15 18:07:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2748 transitions. [2023-12-15 18:07:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:07:21,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:21,566 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] [2023-12-15 18:07:21,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:07:21,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:21,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash -708446609, now seen corresponding path program 1 times [2023-12-15 18:07:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15887305] [2023-12-15 18:07:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:21,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15887305] [2023-12-15 18:07:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15887305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:21,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:21,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:21,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675712954] [2023-12-15 18:07:21,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:21,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:21,639 INFO L87 Difference]: Start difference. First operand 2062 states and 2748 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) [2023-12-15 18:07:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:22,347 INFO L93 Difference]: Finished difference Result 4726 states and 6152 transitions. [2023-12-15 18:07:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:22,348 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 [2023-12-15 18:07:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:22,361 INFO L225 Difference]: With dead ends: 4726 [2023-12-15 18:07:22,361 INFO L226 Difference]: Without dead ends: 2970 [2023-12-15 18:07:22,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:22,366 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1378 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:22,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 836 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2023-12-15 18:07:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2728. [2023-12-15 18:07:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2100 states have (on average 1.3371428571428572) internal successors, (2808), 2137 states have internal predecessors, (2808), 320 states have call successors, (320), 250 states have call predecessors, (320), 306 states have return successors, (447), 347 states have call predecessors, (447), 316 states have call successors, (447) [2023-12-15 18:07:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3575 transitions. [2023-12-15 18:07:22,550 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3575 transitions. Word has length 66 [2023-12-15 18:07:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:22,550 INFO L495 AbstractCegarLoop]: Abstraction has 2728 states and 3575 transitions. [2023-12-15 18:07:22,550 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) [2023-12-15 18:07:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3575 transitions. [2023-12-15 18:07:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 18:07:22,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:22,556 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] [2023-12-15 18:07:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:07:22,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1003755423, now seen corresponding path program 1 times [2023-12-15 18:07:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526450496] [2023-12-15 18:07:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:22,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526450496] [2023-12-15 18:07:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526450496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976240047] [2023-12-15 18:07:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:22,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:22,647 INFO L87 Difference]: Start difference. First operand 2728 states and 3575 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) [2023-12-15 18:07:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:23,484 INFO L93 Difference]: Finished difference Result 3448 states and 4452 transitions. [2023-12-15 18:07:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:23,485 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 [2023-12-15 18:07:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:23,497 INFO L225 Difference]: With dead ends: 3448 [2023-12-15 18:07:23,498 INFO L226 Difference]: Without dead ends: 3445 [2023-12-15 18:07:23,499 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 [2023-12-15 18:07:23,499 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1941 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:23,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 812 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:07:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2023-12-15 18:07:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3178. [2023-12-15 18:07:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 2441 states have (on average 1.325686194182712) internal successors, (3236), 2483 states have internal predecessors, (3236), 370 states have call successors, (370), 294 states have call predecessors, (370), 365 states have return successors, (526), 407 states have call predecessors, (526), 367 states have call successors, (526) [2023-12-15 18:07:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4132 transitions. [2023-12-15 18:07:23,681 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4132 transitions. Word has length 67 [2023-12-15 18:07:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:23,682 INFO L495 AbstractCegarLoop]: Abstraction has 3178 states and 4132 transitions. [2023-12-15 18:07:23,682 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) [2023-12-15 18:07:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4132 transitions. [2023-12-15 18:07:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 18:07:23,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:23,684 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] [2023-12-15 18:07:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:07:23,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:23,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1052898055, now seen corresponding path program 1 times [2023-12-15 18:07:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590200845] [2023-12-15 18:07:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:23,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590200845] [2023-12-15 18:07:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590200845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388191668] [2023-12-15 18:07:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:23,851 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) [2023-12-15 18:07:23,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:07:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:07:24,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:24,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:07:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388191668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:07:24,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:07:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-15 18:07:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624700724] [2023-12-15 18:07:24,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:07:24,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:07:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:07:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:24,325 INFO L87 Difference]: Start difference. First operand 3178 states and 4132 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) [2023-12-15 18:07:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:25,945 INFO L93 Difference]: Finished difference Result 7245 states and 9244 transitions. [2023-12-15 18:07:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:07:25,946 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 [2023-12-15 18:07:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:25,977 INFO L225 Difference]: With dead ends: 7245 [2023-12-15 18:07:25,977 INFO L226 Difference]: Without dead ends: 7242 [2023-12-15 18:07:25,980 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 [2023-12-15 18:07:25,980 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1921 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:25,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 1608 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2023-12-15 18:07:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 4804. [2023-12-15 18:07:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 3681 states have (on average 1.317033414832926) internal successors, (4848), 3745 states have internal predecessors, (4848), 554 states have call successors, (554), 452 states have call predecessors, (554), 567 states have return successors, (804), 613 states have call predecessors, (804), 551 states have call successors, (804) [2023-12-15 18:07:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 6206 transitions. [2023-12-15 18:07:26,328 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 6206 transitions. Word has length 68 [2023-12-15 18:07:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:26,328 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 6206 transitions. [2023-12-15 18:07:26,328 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) [2023-12-15 18:07:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 6206 transitions. [2023-12-15 18:07:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:07:26,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:26,330 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] [2023-12-15 18:07:26,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:07:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 18:07:26,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:26,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2114619617, now seen corresponding path program 2 times [2023-12-15 18:07:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360119938] [2023-12-15 18:07:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:26,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:26,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360119938] [2023-12-15 18:07:26,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360119938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:26,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:26,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802961886] [2023-12-15 18:07:26,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:26,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:26,618 INFO L87 Difference]: Start difference. First operand 4804 states and 6206 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) [2023-12-15 18:07:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:27,399 INFO L93 Difference]: Finished difference Result 7260 states and 9353 transitions. [2023-12-15 18:07:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:07:27,399 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 [2023-12-15 18:07:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:27,419 INFO L225 Difference]: With dead ends: 7260 [2023-12-15 18:07:27,419 INFO L226 Difference]: Without dead ends: 3557 [2023-12-15 18:07:27,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:27,428 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1275 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:27,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 890 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2023-12-15 18:07:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3328. [2023-12-15 18:07:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 2561 states have (on average 1.304178055447091) internal successors, (3340), 2603 states have internal predecessors, (3340), 386 states have call successors, (386), 308 states have call predecessors, (386), 379 states have return successors, (530), 423 states have call predecessors, (530), 383 states have call successors, (530) [2023-12-15 18:07:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4256 transitions. [2023-12-15 18:07:27,676 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4256 transitions. Word has length 71 [2023-12-15 18:07:27,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:27,677 INFO L495 AbstractCegarLoop]: Abstraction has 3328 states and 4256 transitions. [2023-12-15 18:07:27,678 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) [2023-12-15 18:07:27,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4256 transitions. [2023-12-15 18:07:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 18:07:27,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:27,680 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] [2023-12-15 18:07:27,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:07:27,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:27,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:27,681 INFO L85 PathProgramCache]: Analyzing trace with hash 579581739, now seen corresponding path program 1 times [2023-12-15 18:07:27,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:27,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399063167] [2023-12-15 18:07:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:27,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:07:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399063167] [2023-12-15 18:07:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399063167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129973031] [2023-12-15 18:07:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:27,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:27,799 INFO L87 Difference]: Start difference. First operand 3328 states and 4256 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) [2023-12-15 18:07:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:29,233 INFO L93 Difference]: Finished difference Result 9626 states and 12099 transitions. [2023-12-15 18:07:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 18:07:29,233 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 [2023-12-15 18:07:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:29,263 INFO L225 Difference]: With dead ends: 9626 [2023-12-15 18:07:29,263 INFO L226 Difference]: Without dead ends: 5389 [2023-12-15 18:07:29,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-15 18:07:29,271 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 890 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:29,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1619 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2023-12-15 18:07:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 5069. [2023-12-15 18:07:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 3845 states have (on average 1.271521456436931) internal successors, (4889), 3930 states have internal predecessors, (4889), 590 states have call successors, (590), 482 states have call predecessors, (590), 632 states have return successors, (912), 663 states have call predecessors, (912), 587 states have call successors, (912) [2023-12-15 18:07:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 6391 transitions. [2023-12-15 18:07:29,636 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 6391 transitions. Word has length 76 [2023-12-15 18:07:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 6391 transitions. [2023-12-15 18:07:29,637 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) [2023-12-15 18:07:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 6391 transitions. [2023-12-15 18:07:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 18:07:29,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:29,640 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] [2023-12-15 18:07:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:07:29,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:29,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1570612716, now seen corresponding path program 1 times [2023-12-15 18:07:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309710616] [2023-12-15 18:07:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 18:07:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:07:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309710616] [2023-12-15 18:07:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309710616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:29,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717420802] [2023-12-15 18:07:29,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:29,758 INFO L87 Difference]: Start difference. First operand 5069 states and 6391 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) [2023-12-15 18:07:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:31,184 INFO L93 Difference]: Finished difference Result 8740 states and 10899 transitions. [2023-12-15 18:07:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 18:07:31,184 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 [2023-12-15 18:07:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:31,210 INFO L225 Difference]: With dead ends: 8740 [2023-12-15 18:07:31,211 INFO L226 Difference]: Without dead ends: 4560 [2023-12-15 18:07:31,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-15 18:07:31,219 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2003 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:31,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 1372 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-12-15 18:07:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4226. [2023-12-15 18:07:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 3215 states have (on average 1.2656298600311042) internal successors, (4069), 3282 states have internal predecessors, (4069), 491 states have call successors, (491), 397 states have call predecessors, (491), 518 states have return successors, (690), 553 states have call predecessors, (690), 488 states have call successors, (690) [2023-12-15 18:07:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5250 transitions. [2023-12-15 18:07:31,492 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5250 transitions. Word has length 86 [2023-12-15 18:07:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:31,492 INFO L495 AbstractCegarLoop]: Abstraction has 4226 states and 5250 transitions. [2023-12-15 18:07:31,493 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) [2023-12-15 18:07:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5250 transitions. [2023-12-15 18:07:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 18:07:31,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:31,499 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] [2023-12-15 18:07:31,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:07:31,499 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:31,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash 98885558, now seen corresponding path program 1 times [2023-12-15 18:07:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481858588] [2023-12-15 18:07:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:07:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 18:07:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 18:07:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 18:07:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:07:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 18:07:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-15 18:07:31,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481858588] [2023-12-15 18:07:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481858588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257014817] [2023-12-15 18:07:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:31,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:31,696 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) [2023-12-15 18:07:31,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:07:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:31,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 18:07:31,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 18:07:31,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:07:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257014817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:31,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:07:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-15 18:07:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003255394] [2023-12-15 18:07:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:31,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:07:31,886 INFO L87 Difference]: Start difference. First operand 4226 states and 5250 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) [2023-12-15 18:07:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:32,130 INFO L93 Difference]: Finished difference Result 6198 states and 7679 transitions. [2023-12-15 18:07:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:32,130 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 [2023-12-15 18:07:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:32,138 INFO L225 Difference]: With dead ends: 6198 [2023-12-15 18:07:32,139 INFO L226 Difference]: Without dead ends: 2282 [2023-12-15 18:07:32,148 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 [2023-12-15 18:07:32,149 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 32 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:32,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2654 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:07:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-12-15 18:07:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2157. [2023-12-15 18:07:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1723 states have (on average 1.2826465467208357) internal successors, (2210), 1739 states have internal predecessors, (2210), 215 states have call successors, (215), 163 states have call predecessors, (215), 217 states have return successors, (297), 255 states have call predecessors, (297), 212 states have call successors, (297) [2023-12-15 18:07:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2722 transitions. [2023-12-15 18:07:32,281 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2722 transitions. Word has length 131 [2023-12-15 18:07:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:32,281 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 2722 transitions. [2023-12-15 18:07:32,282 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) [2023-12-15 18:07:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2722 transitions. [2023-12-15 18:07:32,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-15 18:07:32,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:32,286 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] [2023-12-15 18:07:32,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:07:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:07:32,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:32,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 231938810, now seen corresponding path program 1 times [2023-12-15 18:07:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905882652] [2023-12-15 18:07:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 18:07:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 18:07:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 18:07:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 18:07:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 18:07:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-15 18:07:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-15 18:07:32,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:32,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905882652] [2023-12-15 18:07:32,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905882652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:32,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670797529] [2023-12-15 18:07:32,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:32,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:32,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:32,596 INFO L87 Difference]: Start difference. First operand 2157 states and 2722 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) [2023-12-15 18:07:33,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:33,293 INFO L93 Difference]: Finished difference Result 2222 states and 2790 transitions. [2023-12-15 18:07:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:33,294 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 [2023-12-15 18:07:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:33,298 INFO L225 Difference]: With dead ends: 2222 [2023-12-15 18:07:33,299 INFO L226 Difference]: Without dead ends: 1820 [2023-12-15 18:07:33,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:33,300 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 601 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:33,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1198 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2023-12-15 18:07:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1758. [2023-12-15 18:07:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1420 states have (on average 1.3007042253521126) internal successors, (1847), 1433 states have internal predecessors, (1847), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2023-12-15 18:07:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2249 transitions. [2023-12-15 18:07:33,396 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2249 transitions. Word has length 133 [2023-12-15 18:07:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:33,396 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2249 transitions. [2023-12-15 18:07:33,396 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) [2023-12-15 18:07:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2249 transitions. [2023-12-15 18:07:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:33,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:33,399 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] [2023-12-15 18:07:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:07:33,400 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:33,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash -433326026, now seen corresponding path program 1 times [2023-12-15 18:07:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372063232] [2023-12-15 18:07:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:33,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372063232] [2023-12-15 18:07:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372063232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:33,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:07:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238070661] [2023-12-15 18:07:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:33,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:07:33,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:07:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:07:33,542 INFO L87 Difference]: Start difference. First operand 1758 states and 2249 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:35,009 INFO L93 Difference]: Finished difference Result 2136 states and 2877 transitions. [2023-12-15 18:07:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 18:07:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:35,014 INFO L225 Difference]: With dead ends: 2136 [2023-12-15 18:07:35,014 INFO L226 Difference]: Without dead ends: 1858 [2023-12-15 18:07:35,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:35,016 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 870 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:35,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 732 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-12-15 18:07:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1758. [2023-12-15 18:07:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1420 states have (on average 1.3) internal successors, (1846), 1433 states have internal predecessors, (1846), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2023-12-15 18:07:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2248 transitions. [2023-12-15 18:07:35,175 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2248 transitions. Word has length 132 [2023-12-15 18:07:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2248 transitions. [2023-12-15 18:07:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2248 transitions. [2023-12-15 18:07:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:35,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:35,179 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] [2023-12-15 18:07:35,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:07:35,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:35,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1380363912, now seen corresponding path program 1 times [2023-12-15 18:07:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:35,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694647911] [2023-12-15 18:07:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:35,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:35,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694647911] [2023-12-15 18:07:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694647911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321621187] [2023-12-15 18:07:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:35,365 INFO L87 Difference]: Start difference. First operand 1758 states and 2248 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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) [2023-12-15 18:07:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:37,521 INFO L93 Difference]: Finished difference Result 2509 states and 3496 transitions. [2023-12-15 18:07:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:37,526 INFO L225 Difference]: With dead ends: 2509 [2023-12-15 18:07:37,526 INFO L226 Difference]: Without dead ends: 2240 [2023-12-15 18:07:37,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:37,528 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1365 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:37,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1073 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 18:07:37,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2023-12-15 18:07:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2039. [2023-12-15 18:07:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1676 states have (on average 1.3526252983293556) internal successors, (2267), 1690 states have internal predecessors, (2267), 187 states have call successors, (187), 129 states have call predecessors, (187), 174 states have return successors, (254), 220 states have call predecessors, (254), 184 states have call successors, (254) [2023-12-15 18:07:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2708 transitions. [2023-12-15 18:07:37,703 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2708 transitions. Word has length 132 [2023-12-15 18:07:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 2039 states and 2708 transitions. [2023-12-15 18:07:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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) [2023-12-15 18:07:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2708 transitions. [2023-12-15 18:07:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:37,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:37,709 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] [2023-12-15 18:07:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:07:37,709 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:37,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash -407836940, now seen corresponding path program 1 times [2023-12-15 18:07:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525944540] [2023-12-15 18:07:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525944540] [2023-12-15 18:07:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525944540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:37,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:37,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310694489] [2023-12-15 18:07:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:37,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:37,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:37,916 INFO L87 Difference]: Start difference. First operand 2039 states and 2708 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:40,753 INFO L93 Difference]: Finished difference Result 3184 states and 4610 transitions. [2023-12-15 18:07:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:40,760 INFO L225 Difference]: With dead ends: 3184 [2023-12-15 18:07:40,760 INFO L226 Difference]: Without dead ends: 2634 [2023-12-15 18:07:40,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:40,762 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1388 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1922 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 18:07:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-12-15 18:07:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2299. [2023-12-15 18:07:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1911 states have (on average 1.3846153846153846) internal successors, (2646), 1926 states have internal predecessors, (2646), 205 states have call successors, (205), 135 states have call predecessors, (205), 181 states have return successors, (274), 239 states have call predecessors, (274), 202 states have call successors, (274) [2023-12-15 18:07:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3125 transitions. [2023-12-15 18:07:40,954 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3125 transitions. Word has length 132 [2023-12-15 18:07:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:40,954 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3125 transitions. [2023-12-15 18:07:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3125 transitions. [2023-12-15 18:07:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:40,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:40,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:40,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:07:40,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:40,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1319308022, now seen corresponding path program 1 times [2023-12-15 18:07:40,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:40,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627340775] [2023-12-15 18:07:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627340775] [2023-12-15 18:07:41,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627340775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:41,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:41,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972088176] [2023-12-15 18:07:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:41,161 INFO L87 Difference]: Start difference. First operand 2299 states and 3125 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:43,886 INFO L93 Difference]: Finished difference Result 4173 states and 6233 transitions. [2023-12-15 18:07:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:43,894 INFO L225 Difference]: With dead ends: 4173 [2023-12-15 18:07:43,894 INFO L226 Difference]: Without dead ends: 3363 [2023-12-15 18:07:43,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:43,897 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1476 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:43,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1326 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:07:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2023-12-15 18:07:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 2820. [2023-12-15 18:07:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2382 states have (on average 1.429471032745592) internal successors, (3405), 2399 states have internal predecessors, (3405), 241 states have call successors, (241), 147 states have call predecessors, (241), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2023-12-15 18:07:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3964 transitions. [2023-12-15 18:07:44,112 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3964 transitions. Word has length 132 [2023-12-15 18:07:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:44,112 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 3964 transitions. [2023-12-15 18:07:44,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:44,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3964 transitions. [2023-12-15 18:07:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:44,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:44,116 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] [2023-12-15 18:07:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:07:44,116 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:44,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1790664372, now seen corresponding path program 1 times [2023-12-15 18:07:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267671394] [2023-12-15 18:07:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267671394] [2023-12-15 18:07:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267671394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601434923] [2023-12-15 18:07:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:44,318 INFO L87 Difference]: Start difference. First operand 2820 states and 3964 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:45,791 INFO L93 Difference]: Finished difference Result 4682 states and 7063 transitions. [2023-12-15 18:07:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:45,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:45,800 INFO L225 Difference]: With dead ends: 4682 [2023-12-15 18:07:45,801 INFO L226 Difference]: Without dead ends: 3351 [2023-12-15 18:07:45,805 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 [2023-12-15 18:07:45,805 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1224 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:45,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 906 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:07:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2023-12-15 18:07:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 2820. [2023-12-15 18:07:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2382 states have (on average 1.4273719563392107) internal successors, (3400), 2399 states have internal predecessors, (3400), 241 states have call successors, (241), 147 states have call predecessors, (241), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2023-12-15 18:07:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3959 transitions. [2023-12-15 18:07:46,078 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3959 transitions. Word has length 132 [2023-12-15 18:07:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 3959 transitions. [2023-12-15 18:07:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3959 transitions. [2023-12-15 18:07:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:46,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:46,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:46,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:07:46,083 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:46,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash 143301430, now seen corresponding path program 1 times [2023-12-15 18:07:46,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:46,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903770460] [2023-12-15 18:07:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903770460] [2023-12-15 18:07:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903770460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:46,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:46,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633101916] [2023-12-15 18:07:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:46,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:46,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:46,262 INFO L87 Difference]: Start difference. First operand 2820 states and 3959 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:47,940 INFO L93 Difference]: Finished difference Result 4676 states and 7037 transitions. [2023-12-15 18:07:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:47,949 INFO L225 Difference]: With dead ends: 4676 [2023-12-15 18:07:47,949 INFO L226 Difference]: Without dead ends: 3345 [2023-12-15 18:07:47,954 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 [2023-12-15 18:07:47,955 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1055 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:47,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1088 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:07:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2023-12-15 18:07:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 2820. [2023-12-15 18:07:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2382 states have (on average 1.4252728799328296) internal successors, (3395), 2399 states have internal predecessors, (3395), 241 states have call successors, (241), 147 states have call predecessors, (241), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2023-12-15 18:07:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3954 transitions. [2023-12-15 18:07:48,194 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3954 transitions. Word has length 132 [2023-12-15 18:07:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:48,195 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 3954 transitions. [2023-12-15 18:07:48,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3954 transitions. [2023-12-15 18:07:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:48,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:48,199 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] [2023-12-15 18:07:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:07:48,199 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:48,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1988049292, now seen corresponding path program 1 times [2023-12-15 18:07:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807389940] [2023-12-15 18:07:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:48,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807389940] [2023-12-15 18:07:48,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807389940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:48,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:48,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:48,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98342376] [2023-12-15 18:07:48,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:48,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:48,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:48,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:48,395 INFO L87 Difference]: Start difference. First operand 2820 states and 3954 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:49,905 INFO L93 Difference]: Finished difference Result 4669 states and 7009 transitions. [2023-12-15 18:07:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:49,913 INFO L225 Difference]: With dead ends: 4669 [2023-12-15 18:07:49,913 INFO L226 Difference]: Without dead ends: 3338 [2023-12-15 18:07:49,917 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 [2023-12-15 18:07:49,917 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1220 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:49,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 906 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:07:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2023-12-15 18:07:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2820. [2023-12-15 18:07:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2382 states have (on average 1.4231738035264483) internal successors, (3390), 2399 states have internal predecessors, (3390), 241 states have call successors, (241), 147 states have call predecessors, (241), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2023-12-15 18:07:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3949 transitions. [2023-12-15 18:07:50,117 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3949 transitions. Word has length 132 [2023-12-15 18:07:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:50,117 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 3949 transitions. [2023-12-15 18:07:50,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3949 transitions. [2023-12-15 18:07:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:50,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:50,121 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] [2023-12-15 18:07:50,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:07:50,121 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:50,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1268333430, now seen corresponding path program 1 times [2023-12-15 18:07:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070046524] [2023-12-15 18:07:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:50,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070046524] [2023-12-15 18:07:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070046524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:50,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:50,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233781911] [2023-12-15 18:07:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:50,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:50,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:50,299 INFO L87 Difference]: Start difference. First operand 2820 states and 3949 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:53,307 INFO L93 Difference]: Finished difference Result 6047 states and 9220 transitions. [2023-12-15 18:07:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:53,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:53,340 INFO L225 Difference]: With dead ends: 6047 [2023-12-15 18:07:53,340 INFO L226 Difference]: Without dead ends: 4716 [2023-12-15 18:07:53,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:53,344 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1362 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 3087 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:53,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1920 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3087 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:07:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2023-12-15 18:07:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 3875. [2023-12-15 18:07:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 3337 states have (on average 1.4716811507341925) internal successors, (4911), 3358 states have internal predecessors, (4911), 313 states have call successors, (313), 171 states have call predecessors, (313), 223 states have return successors, (412), 353 states have call predecessors, (412), 310 states have call successors, (412) [2023-12-15 18:07:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 5636 transitions. [2023-12-15 18:07:53,640 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 5636 transitions. Word has length 132 [2023-12-15 18:07:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 3875 states and 5636 transitions. [2023-12-15 18:07:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 5636 transitions. [2023-12-15 18:07:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:53,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:53,646 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] [2023-12-15 18:07:53,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:07:53,647 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:53,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash -704831948, now seen corresponding path program 1 times [2023-12-15 18:07:53,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818553984] [2023-12-15 18:07:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:53,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818553984] [2023-12-15 18:07:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818553984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:53,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128191186] [2023-12-15 18:07:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:53,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:53,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:53,828 INFO L87 Difference]: Start difference. First operand 3875 states and 5636 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:56,728 INFO L93 Difference]: Finished difference Result 9828 states and 15349 transitions. [2023-12-15 18:07:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-15 18:07:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:56,755 INFO L225 Difference]: With dead ends: 9828 [2023-12-15 18:07:56,755 INFO L226 Difference]: Without dead ends: 7442 [2023-12-15 18:07:56,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:56,763 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1358 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:56,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1920 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:07:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7442 states. [2023-12-15 18:07:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7442 to 5994. [2023-12-15 18:07:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 5256 states have (on average 1.5157914764079148) internal successors, (7967), 5285 states have internal predecessors, (7967), 457 states have call successors, (457), 219 states have call predecessors, (457), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2023-12-15 18:07:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 9042 transitions. [2023-12-15 18:07:57,232 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 9042 transitions. Word has length 132 [2023-12-15 18:07:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 5994 states and 9042 transitions. [2023-12-15 18:07:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-15 18:07:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 9042 transitions. [2023-12-15 18:07:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:07:57,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:57,238 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] [2023-12-15 18:07:57,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:07:57,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:57,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1328113550, now seen corresponding path program 1 times [2023-12-15 18:07:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:57,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644345] [2023-12-15 18:07:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:07:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 18:07:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:07:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644345] [2023-12-15 18:07:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:57,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:57,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873151022] [2023-12-15 18:07:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:57,464 INFO L87 Difference]: Start difference. First operand 5994 states and 9042 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 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) Received shutdown request... [2023-12-15 18:07:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:07:58,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:07:58,627 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 436 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:58,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 313 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:58,628 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:07:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:07:58,629 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5994states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (346 states constructed, input type IntersectNwa). [2023-12-15 18:07:58,630 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:07:58,637 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:58,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:07:58,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:07:58 BoogieIcfgContainer [2023-12-15 18:07:58,641 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:07:58,642 INFO L158 Benchmark]: Toolchain (without parser) took 48700.70ms. Allocated memory was 174.1MB in the beginning and 810.5MB in the end (delta: 636.5MB). Free memory was 127.7MB in the beginning and 325.4MB in the end (delta: -197.7MB). Peak memory consumption was 440.4MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,642 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:07:58,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.86ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 102.5MB in the end (delta: 24.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,642 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.26ms. Allocated memory is still 174.1MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,642 INFO L158 Benchmark]: Boogie Preprocessor took 123.39ms. Allocated memory is still 174.1MB. Free memory was 97.9MB in the beginning and 92.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,642 INFO L158 Benchmark]: RCFGBuilder took 1033.58ms. Allocated memory is still 174.1MB. Free memory was 92.7MB in the beginning and 100.4MB in the end (delta: -7.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,643 INFO L158 Benchmark]: TraceAbstraction took 46997.32ms. Allocated memory was 174.1MB in the beginning and 810.5MB in the end (delta: 636.5MB). Free memory was 99.9MB in the beginning and 325.4MB in the end (delta: -225.4MB). Peak memory consumption was 411.0MB. Max. memory is 8.0GB. [2023-12-15 18:07:58,644 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 441.86ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 102.5MB in the end (delta: 24.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 97.26ms. Allocated memory is still 174.1MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 123.39ms. Allocated memory is still 174.1MB. Free memory was 97.9MB in the beginning and 92.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1033.58ms. Allocated memory is still 174.1MB. Free memory was 92.7MB in the beginning and 100.4MB in the end (delta: -7.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 46997.32ms. Allocated memory was 174.1MB in the beginning and 810.5MB in the end (delta: 636.5MB). Free memory was 99.9MB in the beginning and 325.4MB in the end (delta: -225.4MB). Peak memory consumption was 411.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while NwaCegarLoop was constructing difference of abstraction (5994states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (346 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 28). Cancelled while NwaCegarLoop was constructing difference of abstraction (5994states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (346 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 378 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.9s, OverallIterations: 26, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 36.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30601 SdHoareTripleChecker+Valid, 26.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30014 mSDsluCounter, 34698 SdHoareTripleChecker+Invalid, 22.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26347 mSDsCounter, 3701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37766 IncrementalHoareTripleChecker+Invalid, 41467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3701 mSolverCounterUnsat, 8351 mSDtfsCounter, 37766 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1096 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5994occurred in iteration=25, InterpolantAutomatonStates: 310, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 9704 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2684 NumberOfCodeBlocks, 2684 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2723 ConstructedInterpolants, 0 QuantifiedInterpolants, 6724 SizeOfPredicates, 1 NumberOfNonLiveVariables, 892 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 29 InterpolantComputations, 25 PerfectInterpolantSequences, 257/267 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-15 18:07:58,651 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end