./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:59:16,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:59:16,169 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:59:16,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:59:16,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:59:16,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:59:16,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:59:16,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:59:16,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:59:16,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:59:16,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:59:16,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:59:16,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:59:16,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:59:16,213 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:59:16,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:59:16,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:59:16,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:59:16,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:59:16,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:59:16,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:59:16,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:59:16,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:59:16,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:59:16,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:59:16,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:59:16,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:59:16,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:59:16,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:59:16,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:59:16,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:59:16,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:59:16,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:16,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:59:16,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:59:16,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:59:16,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:59:16,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:59:16,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:59:16,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:59:16,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:59:16,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:59:16,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 [2024-10-24 02:59:16,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:59:16,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:59:16,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:59:16,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:59:16,489 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:59:16,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-24 02:59:17,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:59:18,044 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:59:18,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-24 02:59:18,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6717b850/205bb27e471647c4ab3f550ebb04b95d/FLAG7a5c3d2d7 [2024-10-24 02:59:18,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6717b850/205bb27e471647c4ab3f550ebb04b95d [2024-10-24 02:59:18,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:59:18,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:59:18,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:18,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:59:18,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:59:18,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64db6868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18, skipping insertion in model container [2024-10-24 02:59:18,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:59:18,708 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2024-10-24 02:59:18,761 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2024-10-24 02:59:18,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:18,830 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:59:18,844 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2024-10-24 02:59:18,861 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2024-10-24 02:59:18,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:18,908 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:59:18,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18 WrapperNode [2024-10-24 02:59:18,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:18,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:18,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:59:18,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:59:18,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,963 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 483 [2024-10-24 02:59:18,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:18,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:59:18,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:59:18,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:59:18,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:18,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,008 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]. [2024-10-24 02:59:19,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:59:19,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:59:19,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:59:19,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:59:19,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (1/1) ... [2024-10-24 02:59:19,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:19,068 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) [2024-10-24 02:59:19,075 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 [2024-10-24 02:59:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:59:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:59:19,109 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:59:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-24 02:59:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-24 02:59:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 02:59:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 02:59:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 02:59:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 02:59:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 02:59:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 02:59:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 02:59:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 02:59:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 02:59:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 02:59:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:59:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 02:59:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 02:59:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:59:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:59:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 02:59:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 02:59:19,210 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:59:19,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:59:19,627 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-10-24 02:59:19,628 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:59:19,673 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:59:19,673 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-24 02:59:19,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:19 BoogieIcfgContainer [2024-10-24 02:59:19,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:59:19,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:59:19,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:59:19,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:59:19,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:59:18" (1/3) ... [2024-10-24 02:59:19,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6109ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:19, skipping insertion in model container [2024-10-24 02:59:19,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:18" (2/3) ... [2024-10-24 02:59:19,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6109ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:19, skipping insertion in model container [2024-10-24 02:59:19,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:19" (3/3) ... [2024-10-24 02:59:19,682 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2024-10-24 02:59:19,695 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:59:19,695 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:59:19,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:59:19,751 INFO L333 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, 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;@1fee6050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:59:19,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:59:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 147 states have (on average 1.653061224489796) internal successors, (243), 152 states have internal predecessors, (243), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 02:59:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 02:59:19,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:19,772 INFO L215 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] [2024-10-24 02:59:19,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:19,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash -641686583, now seen corresponding path program 1 times [2024-10-24 02:59:19,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868415909] [2024-10-24 02:59:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:19,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:19,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:19,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:20,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868415909] [2024-10-24 02:59:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868415909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:20,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945026195] [2024-10-24 02:59:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:20,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:20,049 INFO L87 Difference]: Start difference. First operand has 181 states, 147 states have (on average 1.653061224489796) internal successors, (243), 152 states have internal predecessors, (243), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:20,486 INFO L93 Difference]: Finished difference Result 413 states and 658 transitions. [2024-10-24 02:59:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:20,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-10-24 02:59:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:20,497 INFO L225 Difference]: With dead ends: 413 [2024-10-24 02:59:20,498 INFO L226 Difference]: Without dead ends: 239 [2024-10-24 02:59:20,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:20,504 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 316 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:20,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 368 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-24 02:59:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2024-10-24 02:59:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 194 states have (on average 1.4845360824742269) internal successors, (288), 198 states have internal predecessors, (288), 26 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2024-10-24 02:59:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 344 transitions. [2024-10-24 02:59:20,551 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 344 transitions. Word has length 37 [2024-10-24 02:59:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:20,551 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 344 transitions. [2024-10-24 02:59:20,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 344 transitions. [2024-10-24 02:59:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 02:59:20,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:20,554 INFO L215 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] [2024-10-24 02:59:20,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:59:20,554 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:20,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1102259478, now seen corresponding path program 1 times [2024-10-24 02:59:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:20,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865129208] [2024-10-24 02:59:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:20,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 02:59:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:20,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:20,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865129208] [2024-10-24 02:59:20,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865129208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:20,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:20,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:20,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476763594] [2024-10-24 02:59:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:20,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:20,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:20,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:20,651 INFO L87 Difference]: Start difference. First operand 233 states and 344 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:20,865 INFO L93 Difference]: Finished difference Result 467 states and 688 transitions. [2024-10-24 02:59:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:20,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-10-24 02:59:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:20,868 INFO L225 Difference]: With dead ends: 467 [2024-10-24 02:59:20,868 INFO L226 Difference]: Without dead ends: 356 [2024-10-24 02:59:20,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:20,873 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 329 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:20,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 357 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-10-24 02:59:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 333. [2024-10-24 02:59:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 281 states have (on average 1.4448398576512456) internal successors, (406), 286 states have internal predecessors, (406), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2024-10-24 02:59:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 484 transitions. [2024-10-24 02:59:20,921 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 484 transitions. Word has length 38 [2024-10-24 02:59:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:20,922 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 484 transitions. [2024-10-24 02:59:20,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 484 transitions. [2024-10-24 02:59:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 02:59:20,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:20,927 INFO L215 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] [2024-10-24 02:59:20,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:59:20,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:20,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash -45404508, now seen corresponding path program 1 times [2024-10-24 02:59:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015044930] [2024-10-24 02:59:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:20,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:59:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:21,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015044930] [2024-10-24 02:59:21,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015044930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:21,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:21,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758700191] [2024-10-24 02:59:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:21,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:21,009 INFO L87 Difference]: Start difference. First operand 333 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:21,280 INFO L93 Difference]: Finished difference Result 753 states and 1065 transitions. [2024-10-24 02:59:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-24 02:59:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:21,285 INFO L225 Difference]: With dead ends: 753 [2024-10-24 02:59:21,287 INFO L226 Difference]: Without dead ends: 542 [2024-10-24 02:59:21,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:21,289 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 156 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:21,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 477 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-10-24 02:59:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 438. [2024-10-24 02:59:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 374 states have (on average 1.4304812834224598) internal successors, (535), 381 states have internal predecessors, (535), 40 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (50), 36 states have call predecessors, (50), 38 states have call successors, (50) [2024-10-24 02:59:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 625 transitions. [2024-10-24 02:59:21,319 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 625 transitions. Word has length 39 [2024-10-24 02:59:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:21,320 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 625 transitions. [2024-10-24 02:59:21,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 625 transitions. [2024-10-24 02:59:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 02:59:21,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:21,325 INFO L215 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] [2024-10-24 02:59:21,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:59:21,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:21,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1197660736, now seen corresponding path program 1 times [2024-10-24 02:59:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581109864] [2024-10-24 02:59:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 02:59:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:59:21,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581109864] [2024-10-24 02:59:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581109864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:21,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378648454] [2024-10-24 02:59:21,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:21,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:21,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:21,436 INFO L87 Difference]: Start difference. First operand 438 states and 625 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:21,692 INFO L93 Difference]: Finished difference Result 954 states and 1342 transitions. [2024-10-24 02:59:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-10-24 02:59:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:21,697 INFO L225 Difference]: With dead ends: 954 [2024-10-24 02:59:21,697 INFO L226 Difference]: Without dead ends: 638 [2024-10-24 02:59:21,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:21,701 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 141 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:21,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 521 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-10-24 02:59:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 604. [2024-10-24 02:59:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 516 states have (on average 1.377906976744186) internal successors, (711), 525 states have internal predecessors, (711), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (74), 50 states have call predecessors, (74), 52 states have call successors, (74) [2024-10-24 02:59:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 839 transitions. [2024-10-24 02:59:21,741 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 839 transitions. Word has length 54 [2024-10-24 02:59:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:21,742 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 839 transitions. [2024-10-24 02:59:21,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 839 transitions. [2024-10-24 02:59:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 02:59:21,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:21,746 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:21,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:59:21,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:21,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 119218933, now seen corresponding path program 1 times [2024-10-24 02:59:21,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625231009] [2024-10-24 02:59:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 02:59:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 02:59:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:21,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625231009] [2024-10-24 02:59:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625231009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:21,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:21,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119024204] [2024-10-24 02:59:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:21,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:21,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:21,818 INFO L87 Difference]: Start difference. First operand 604 states and 839 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:22,064 INFO L93 Difference]: Finished difference Result 1183 states and 1618 transitions. [2024-10-24 02:59:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-10-24 02:59:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:22,068 INFO L225 Difference]: With dead ends: 1183 [2024-10-24 02:59:22,069 INFO L226 Difference]: Without dead ends: 781 [2024-10-24 02:59:22,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:22,071 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:22,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 369 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-10-24 02:59:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 732. [2024-10-24 02:59:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 628 states have (on average 1.3471337579617835) internal successors, (846), 639 states have internal predecessors, (846), 62 states have call successors, (62), 35 states have call predecessors, (62), 40 states have return successors, (88), 58 states have call predecessors, (88), 60 states have call successors, (88) [2024-10-24 02:59:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 996 transitions. [2024-10-24 02:59:22,114 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 996 transitions. Word has length 59 [2024-10-24 02:59:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:22,114 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 996 transitions. [2024-10-24 02:59:22,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 996 transitions. [2024-10-24 02:59:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:22,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:22,116 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:22,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:59:22,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:22,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash 157658772, now seen corresponding path program 1 times [2024-10-24 02:59:22,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:22,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098917066] [2024-10-24 02:59:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:22,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:59:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098917066] [2024-10-24 02:59:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098917066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685583706] [2024-10-24 02:59:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:22,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:22,196 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) [2024-10-24 02:59:22,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:59:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:22,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 02:59:22,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685583706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:22,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874228203] [2024-10-24 02:59:22,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:22,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:22,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:22,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:22,310 INFO L87 Difference]: Start difference. First operand 732 states and 996 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:22,397 INFO L93 Difference]: Finished difference Result 1220 states and 1670 transitions. [2024-10-24 02:59:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:22,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 02:59:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:22,401 INFO L225 Difference]: With dead ends: 1220 [2024-10-24 02:59:22,401 INFO L226 Difference]: Without dead ends: 737 [2024-10-24 02:59:22,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:22,403 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:22,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-10-24 02:59:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-10-24 02:59:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 633 states have (on average 1.3317535545023698) internal successors, (843), 644 states have internal predecessors, (843), 62 states have call successors, (62), 35 states have call predecessors, (62), 40 states have return successors, (88), 58 states have call predecessors, (88), 60 states have call successors, (88) [2024-10-24 02:59:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 993 transitions. [2024-10-24 02:59:22,439 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 993 transitions. Word has length 60 [2024-10-24 02:59:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:22,440 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 993 transitions. [2024-10-24 02:59:22,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 993 transitions. [2024-10-24 02:59:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:22,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:22,442 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:22,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:59:22,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 02:59:22,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:22,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash -686346730, now seen corresponding path program 1 times [2024-10-24 02:59:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215398203] [2024-10-24 02:59:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 02:59:22,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215398203] [2024-10-24 02:59:22,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215398203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510116885] [2024-10-24 02:59:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:22,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:22,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:22,764 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) [2024-10-24 02:59:22,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:59:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:22,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:22,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:59:22,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510116885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:22,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:22,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780298841] [2024-10-24 02:59:22,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:22,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:22,859 INFO L87 Difference]: Start difference. First operand 737 states and 993 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:22,943 INFO L93 Difference]: Finished difference Result 1163 states and 1572 transitions. [2024-10-24 02:59:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:22,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 02:59:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:22,947 INFO L225 Difference]: With dead ends: 1163 [2024-10-24 02:59:22,947 INFO L226 Difference]: Without dead ends: 634 [2024-10-24 02:59:22,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:22,948 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:22,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-10-24 02:59:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 627. [2024-10-24 02:59:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 541 states have (on average 1.3308687615526802) internal successors, (720), 550 states have internal predecessors, (720), 52 states have call successors, (52), 29 states have call predecessors, (52), 32 states have return successors, (69), 48 states have call predecessors, (69), 50 states have call successors, (69) [2024-10-24 02:59:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 841 transitions. [2024-10-24 02:59:22,970 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 841 transitions. Word has length 60 [2024-10-24 02:59:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:22,971 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 841 transitions. [2024-10-24 02:59:22,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 841 transitions. [2024-10-24 02:59:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:22,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:22,972 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:22,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:59:23,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-24 02:59:23,177 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:23,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1111292886, now seen corresponding path program 1 times [2024-10-24 02:59:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400549744] [2024-10-24 02:59:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:23,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400549744] [2024-10-24 02:59:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400549744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:59:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717296641] [2024-10-24 02:59:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:23,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:59:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:59:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:23,279 INFO L87 Difference]: Start difference. First operand 627 states and 841 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:23,615 INFO L93 Difference]: Finished difference Result 712 states and 944 transitions. [2024-10-24 02:59:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:59:23,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-10-24 02:59:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:23,619 INFO L225 Difference]: With dead ends: 712 [2024-10-24 02:59:23,619 INFO L226 Difference]: Without dead ends: 709 [2024-10-24 02:59:23,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:23,620 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 551 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:23,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 366 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-24 02:59:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 626. [2024-10-24 02:59:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 541 states have (on average 1.3271719038817005) internal successors, (718), 549 states have internal predecessors, (718), 51 states have call successors, (51), 29 states have call predecessors, (51), 32 states have return successors, (69), 48 states have call predecessors, (69), 50 states have call successors, (69) [2024-10-24 02:59:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 838 transitions. [2024-10-24 02:59:23,677 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 838 transitions. Word has length 60 [2024-10-24 02:59:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:23,677 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 838 transitions. [2024-10-24 02:59:23,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 838 transitions. [2024-10-24 02:59:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:23,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:23,683 INFO L215 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] [2024-10-24 02:59:23,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:59:23,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:23,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1127040550, now seen corresponding path program 1 times [2024-10-24 02:59:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567405570] [2024-10-24 02:59:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567405570] [2024-10-24 02:59:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567405570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:23,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:23,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589279688] [2024-10-24 02:59:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:23,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:23,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:23,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:23,796 INFO L87 Difference]: Start difference. First operand 626 states and 838 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:24,512 INFO L93 Difference]: Finished difference Result 901 states and 1264 transitions. [2024-10-24 02:59:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:59:24,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:24,516 INFO L225 Difference]: With dead ends: 901 [2024-10-24 02:59:24,516 INFO L226 Difference]: Without dead ends: 793 [2024-10-24 02:59:24,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:24,519 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 518 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:24,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 531 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:59:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-10-24 02:59:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 734. [2024-10-24 02:59:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 640 states have internal predecessors, (856), 62 states have call successors, (62), 35 states have call predecessors, (62), 39 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-10-24 02:59:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1001 transitions. [2024-10-24 02:59:24,568 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1001 transitions. Word has length 61 [2024-10-24 02:59:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:24,568 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1001 transitions. [2024-10-24 02:59:24,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1001 transitions. [2024-10-24 02:59:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:24,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:24,570 INFO L215 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] [2024-10-24 02:59:24,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:59:24,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:24,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1159478042, now seen corresponding path program 1 times [2024-10-24 02:59:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321096072] [2024-10-24 02:59:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321096072] [2024-10-24 02:59:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321096072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621677012] [2024-10-24 02:59:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:24,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:24,674 INFO L87 Difference]: Start difference. First operand 734 states and 1001 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:25,545 INFO L93 Difference]: Finished difference Result 1146 states and 1630 transitions. [2024-10-24 02:59:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:59:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:25,549 INFO L225 Difference]: With dead ends: 1146 [2024-10-24 02:59:25,550 INFO L226 Difference]: Without dead ends: 930 [2024-10-24 02:59:25,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:59:25,551 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 523 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:25,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 870 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:59:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-10-24 02:59:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 835. [2024-10-24 02:59:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 714 states have (on average 1.3725490196078431) internal successors, (980), 724 states have internal predecessors, (980), 73 states have call successors, (73), 41 states have call predecessors, (73), 46 states have return successors, (96), 71 states have call predecessors, (96), 72 states have call successors, (96) [2024-10-24 02:59:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1149 transitions. [2024-10-24 02:59:25,602 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1149 transitions. Word has length 61 [2024-10-24 02:59:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:25,602 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1149 transitions. [2024-10-24 02:59:25,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1149 transitions. [2024-10-24 02:59:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:25,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:25,604 INFO L215 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] [2024-10-24 02:59:25,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:59:25,605 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:25,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1174996760, now seen corresponding path program 1 times [2024-10-24 02:59:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958914639] [2024-10-24 02:59:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958914639] [2024-10-24 02:59:25,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958914639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:25,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:25,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187199698] [2024-10-24 02:59:25,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:25,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:25,722 INFO L87 Difference]: Start difference. First operand 835 states and 1149 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:26,695 INFO L93 Difference]: Finished difference Result 1567 states and 2262 transitions. [2024-10-24 02:59:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:26,701 INFO L225 Difference]: With dead ends: 1567 [2024-10-24 02:59:26,701 INFO L226 Difference]: Without dead ends: 1250 [2024-10-24 02:59:26,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:26,703 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 537 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:26,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 861 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:59:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-10-24 02:59:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1037. [2024-10-24 02:59:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 882 states have (on average 1.3979591836734695) internal successors, (1233), 894 states have internal predecessors, (1233), 93 states have call successors, (93), 53 states have call predecessors, (93), 60 states have return successors, (124), 93 states have call predecessors, (124), 92 states have call successors, (124) [2024-10-24 02:59:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1450 transitions. [2024-10-24 02:59:26,775 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1450 transitions. Word has length 61 [2024-10-24 02:59:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:26,776 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1450 transitions. [2024-10-24 02:59:26,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1450 transitions. [2024-10-24 02:59:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:26,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:26,779 INFO L215 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] [2024-10-24 02:59:26,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:59:26,779 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:26,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1528085142, now seen corresponding path program 1 times [2024-10-24 02:59:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:26,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964313425] [2024-10-24 02:59:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964313425] [2024-10-24 02:59:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964313425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913649314] [2024-10-24 02:59:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:26,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:26,867 INFO L87 Difference]: Start difference. First operand 1037 states and 1450 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:27,721 INFO L93 Difference]: Finished difference Result 2271 states and 3313 transitions. [2024-10-24 02:59:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:27,729 INFO L225 Difference]: With dead ends: 2271 [2024-10-24 02:59:27,729 INFO L226 Difference]: Without dead ends: 1752 [2024-10-24 02:59:27,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:27,732 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 564 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:27,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 857 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:59:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2024-10-24 02:59:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1418. [2024-10-24 02:59:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1197 states have (on average 1.4243943191311612) internal successors, (1705), 1213 states have internal predecessors, (1705), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-24 02:59:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2020 transitions. [2024-10-24 02:59:27,831 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2020 transitions. Word has length 61 [2024-10-24 02:59:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:27,831 INFO L471 AbstractCegarLoop]: Abstraction has 1418 states and 2020 transitions. [2024-10-24 02:59:27,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2020 transitions. [2024-10-24 02:59:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:27,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:27,833 INFO L215 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] [2024-10-24 02:59:27,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:59:27,833 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:27,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 400187560, now seen corresponding path program 1 times [2024-10-24 02:59:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:27,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424568446] [2024-10-24 02:59:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:27,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:27,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424568446] [2024-10-24 02:59:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424568446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:27,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513947728] [2024-10-24 02:59:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:27,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:27,917 INFO L87 Difference]: Start difference. First operand 1418 states and 2020 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:28,407 INFO L93 Difference]: Finished difference Result 2531 states and 3718 transitions. [2024-10-24 02:59:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:28,413 INFO L225 Difference]: With dead ends: 2531 [2024-10-24 02:59:28,413 INFO L226 Difference]: Without dead ends: 1631 [2024-10-24 02:59:28,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:28,416 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 429 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:28,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 541 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-10-24 02:59:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1418. [2024-10-24 02:59:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1197 states have (on average 1.41687552213868) internal successors, (1696), 1213 states have internal predecessors, (1696), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-24 02:59:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2011 transitions. [2024-10-24 02:59:28,493 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2011 transitions. Word has length 61 [2024-10-24 02:59:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,493 INFO L471 AbstractCegarLoop]: Abstraction has 1418 states and 2011 transitions. [2024-10-24 02:59:28,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2011 transitions. [2024-10-24 02:59:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:28,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,495 INFO L215 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] [2024-10-24 02:59:28,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:59:28,495 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:28,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1293673898, now seen corresponding path program 1 times [2024-10-24 02:59:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129270322] [2024-10-24 02:59:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:28,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129270322] [2024-10-24 02:59:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129270322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:28,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:28,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:28,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595251129] [2024-10-24 02:59:28,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:28,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:28,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:28,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:28,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:28,557 INFO L87 Difference]: Start difference. First operand 1418 states and 2011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:29,076 INFO L93 Difference]: Finished difference Result 2528 states and 3697 transitions. [2024-10-24 02:59:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:29,083 INFO L225 Difference]: With dead ends: 2528 [2024-10-24 02:59:29,083 INFO L226 Difference]: Without dead ends: 1629 [2024-10-24 02:59:29,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:59:29,085 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 187 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:29,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 616 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-10-24 02:59:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1436. [2024-10-24 02:59:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1215 states have (on average 1.4106995884773663) internal successors, (1714), 1231 states have internal predecessors, (1714), 131 states have call successors, (131), 77 states have call predecessors, (131), 88 states have return successors, (184), 135 states have call predecessors, (184), 130 states have call successors, (184) [2024-10-24 02:59:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2029 transitions. [2024-10-24 02:59:29,180 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2029 transitions. Word has length 61 [2024-10-24 02:59:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2029 transitions. [2024-10-24 02:59:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2029 transitions. [2024-10-24 02:59:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:29,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:29,183 INFO L215 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] [2024-10-24 02:59:29,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:59:29,183 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:29,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1953205420, now seen corresponding path program 1 times [2024-10-24 02:59:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764617376] [2024-10-24 02:59:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:29,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:29,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764617376] [2024-10-24 02:59:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764617376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:29,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:29,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010125757] [2024-10-24 02:59:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:29,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:29,296 INFO L87 Difference]: Start difference. First operand 1436 states and 2029 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:30,487 INFO L93 Difference]: Finished difference Result 4641 states and 6943 transitions. [2024-10-24 02:59:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 02:59:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-24 02:59:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:30,502 INFO L225 Difference]: With dead ends: 4641 [2024-10-24 02:59:30,502 INFO L226 Difference]: Without dead ends: 3724 [2024-10-24 02:59:30,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-24 02:59:30,507 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1204 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:30,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 710 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:59:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2024-10-24 02:59:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3202. [2024-10-24 02:59:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 2669 states have (on average 1.433870363431997) internal successors, (3827), 2716 states have internal predecessors, (3827), 315 states have call successors, (315), 189 states have call predecessors, (315), 216 states have return successors, (483), 304 states have call predecessors, (483), 314 states have call successors, (483) [2024-10-24 02:59:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4625 transitions. [2024-10-24 02:59:30,784 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4625 transitions. Word has length 61 [2024-10-24 02:59:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:30,784 INFO L471 AbstractCegarLoop]: Abstraction has 3202 states and 4625 transitions. [2024-10-24 02:59:30,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4625 transitions. [2024-10-24 02:59:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:30,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:30,786 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:30,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:59:30,786 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:30,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash 89678806, now seen corresponding path program 1 times [2024-10-24 02:59:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931191971] [2024-10-24 02:59:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931191971] [2024-10-24 02:59:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931191971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336037798] [2024-10-24 02:59:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:30,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:30,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:59:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:59:30,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:31,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:59:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:31,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336037798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:59:31,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:59:31,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-24 02:59:31,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927219707] [2024-10-24 02:59:31,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:59:31,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:59:31,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:59:31,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:31,158 INFO L87 Difference]: Start difference. First operand 3202 states and 4625 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 02:59:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:31,762 INFO L93 Difference]: Finished difference Result 4005 states and 5660 transitions. [2024-10-24 02:59:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:59:31,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-24 02:59:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:31,776 INFO L225 Difference]: With dead ends: 4005 [2024-10-24 02:59:31,777 INFO L226 Difference]: Without dead ends: 4002 [2024-10-24 02:59:31,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:59:31,778 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 509 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:31,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 986 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2024-10-24 02:59:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3505. [2024-10-24 02:59:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2936 states have (on average 1.4213215258855585) internal successors, (4173), 2989 states have internal predecessors, (4173), 334 states have call successors, (334), 202 states have call predecessors, (334), 233 states have return successors, (513), 321 states have call predecessors, (513), 333 states have call successors, (513) [2024-10-24 02:59:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5020 transitions. [2024-10-24 02:59:32,027 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5020 transitions. Word has length 61 [2024-10-24 02:59:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:32,027 INFO L471 AbstractCegarLoop]: Abstraction has 3505 states and 5020 transitions. [2024-10-24 02:59:32,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 02:59:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5020 transitions. [2024-10-24 02:59:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 02:59:32,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:32,031 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 02:59:32,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:59:32,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:32,235 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:32,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1275804189, now seen corresponding path program 2 times [2024-10-24 02:59:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328682893] [2024-10-24 02:59:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 02:59:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 02:59:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328682893] [2024-10-24 02:59:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328682893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:32,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:32,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:32,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433470677] [2024-10-24 02:59:32,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:32,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:32,273 INFO L87 Difference]: Start difference. First operand 3505 states and 5020 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 02:59:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:32,697 INFO L93 Difference]: Finished difference Result 4133 states and 5837 transitions. [2024-10-24 02:59:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:32,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2024-10-24 02:59:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:32,712 INFO L225 Difference]: With dead ends: 4133 [2024-10-24 02:59:32,712 INFO L226 Difference]: Without dead ends: 3474 [2024-10-24 02:59:32,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:32,715 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 326 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:32,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2024-10-24 02:59:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3397. [2024-10-24 02:59:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 2841 states have (on average 1.4237944385779655) internal successors, (4045), 2894 states have internal predecessors, (4045), 327 states have call successors, (327), 197 states have call predecessors, (327), 227 states have return successors, (502), 313 states have call predecessors, (502), 326 states have call successors, (502) [2024-10-24 02:59:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4874 transitions. [2024-10-24 02:59:33,007 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4874 transitions. Word has length 78 [2024-10-24 02:59:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:33,007 INFO L471 AbstractCegarLoop]: Abstraction has 3397 states and 4874 transitions. [2024-10-24 02:59:33,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 02:59:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4874 transitions. [2024-10-24 02:59:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 02:59:33,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:33,011 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 02:59:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:59:33,012 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1576457092, now seen corresponding path program 1 times [2024-10-24 02:59:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266032005] [2024-10-24 02:59:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 02:59:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 02:59:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 02:59:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 02:59:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266032005] [2024-10-24 02:59:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266032005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159062837] [2024-10-24 02:59:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:33,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:33,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:59:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:33,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:59:33,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159062837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 02:59:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428102787] [2024-10-24 02:59:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:33,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:33,150 INFO L87 Difference]: Start difference. First operand 3397 states and 4874 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 02:59:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:33,349 INFO L93 Difference]: Finished difference Result 3680 states and 5230 transitions. [2024-10-24 02:59:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2024-10-24 02:59:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:33,362 INFO L225 Difference]: With dead ends: 3680 [2024-10-24 02:59:33,362 INFO L226 Difference]: Without dead ends: 2693 [2024-10-24 02:59:33,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:33,365 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 55 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:33,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 486 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2024-10-24 02:59:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2693. [2024-10-24 02:59:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2222 states have (on average 1.4635463546354635) internal successors, (3252), 2262 states have internal predecessors, (3252), 280 states have call successors, (280), 166 states have call predecessors, (280), 190 states have return successors, (430), 272 states have call predecessors, (430), 280 states have call successors, (430) [2024-10-24 02:59:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3962 transitions. [2024-10-24 02:59:33,567 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3962 transitions. Word has length 92 [2024-10-24 02:59:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:33,568 INFO L471 AbstractCegarLoop]: Abstraction has 2693 states and 3962 transitions. [2024-10-24 02:59:33,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 02:59:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3962 transitions. [2024-10-24 02:59:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:59:33,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:33,572 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:33,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:59:33,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 02:59:33,773 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:33,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -880498830, now seen corresponding path program 1 times [2024-10-24 02:59:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432900110] [2024-10-24 02:59:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:59:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 02:59:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 02:59:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432900110] [2024-10-24 02:59:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432900110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326203471] [2024-10-24 02:59:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:33,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:59:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:33,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 02:59:33,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326203471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990016526] [2024-10-24 02:59:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:33,967 INFO L87 Difference]: Start difference. First operand 2693 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:59:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:34,300 INFO L93 Difference]: Finished difference Result 7964 states and 11847 transitions. [2024-10-24 02:59:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:34,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2024-10-24 02:59:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:34,317 INFO L225 Difference]: With dead ends: 7964 [2024-10-24 02:59:34,317 INFO L226 Difference]: Without dead ends: 5281 [2024-10-24 02:59:34,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:34,324 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 134 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:34,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 295 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2024-10-24 02:59:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5251. [2024-10-24 02:59:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 4334 states have (on average 1.45523765574527) internal successors, (6307), 4413 states have internal predecessors, (6307), 538 states have call successors, (538), 330 states have call predecessors, (538), 378 states have return successors, (822), 515 states have call predecessors, (822), 538 states have call successors, (822) [2024-10-24 02:59:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 7667 transitions. [2024-10-24 02:59:34,892 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 7667 transitions. Word has length 99 [2024-10-24 02:59:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:34,893 INFO L471 AbstractCegarLoop]: Abstraction has 5251 states and 7667 transitions. [2024-10-24 02:59:34,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 02:59:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 7667 transitions. [2024-10-24 02:59:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:59:34,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:34,899 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:59:35,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:35,104 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:35,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash -715203438, now seen corresponding path program 1 times [2024-10-24 02:59:35,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912748240] [2024-10-24 02:59:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:59:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 02:59:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 02:59:35,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912748240] [2024-10-24 02:59:35,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912748240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651936869] [2024-10-24 02:59:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:35,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:35,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:35,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:35,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:59:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:35,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:59:35,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651936869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:35,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032780387] [2024-10-24 02:59:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:35,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:35,269 INFO L87 Difference]: Start difference. First operand 5251 states and 7667 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 02:59:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:35,981 INFO L93 Difference]: Finished difference Result 15415 states and 22651 transitions. [2024-10-24 02:59:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-10-24 02:59:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:36,000 INFO L225 Difference]: With dead ends: 15415 [2024-10-24 02:59:36,000 INFO L226 Difference]: Without dead ends: 6202 [2024-10-24 02:59:36,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:36,014 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 144 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:36,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 449 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6202 states. [2024-10-24 02:59:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6202 to 6202. [2024-10-24 02:59:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 5122 states have (on average 1.4527528309254198) internal successors, (7441), 5209 states have internal predecessors, (7441), 633 states have call successors, (633), 390 states have call predecessors, (633), 446 states have return successors, (972), 610 states have call predecessors, (972), 633 states have call successors, (972) [2024-10-24 02:59:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 9046 transitions. [2024-10-24 02:59:36,475 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 9046 transitions. Word has length 99 [2024-10-24 02:59:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:36,475 INFO L471 AbstractCegarLoop]: Abstraction has 6202 states and 9046 transitions. [2024-10-24 02:59:36,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 02:59:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 9046 transitions. [2024-10-24 02:59:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-24 02:59:36,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:36,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:36,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:36,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:36,686 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:36,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:36,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2103426874, now seen corresponding path program 1 times [2024-10-24 02:59:36,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:36,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144558203] [2024-10-24 02:59:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:36,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:59:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-24 02:59:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 02:59:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-24 02:59:36,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144558203] [2024-10-24 02:59:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144558203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671126499] [2024-10-24 02:59:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:36,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:36,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:36,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:36,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 02:59:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:36,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:59:36,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671126499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:36,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:36,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:36,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164480101] [2024-10-24 02:59:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:36,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:36,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:36,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:36,931 INFO L87 Difference]: Start difference. First operand 6202 states and 9046 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 02:59:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:37,654 INFO L93 Difference]: Finished difference Result 12890 states and 19000 transitions. [2024-10-24 02:59:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:37,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2024-10-24 02:59:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:37,682 INFO L225 Difference]: With dead ends: 12890 [2024-10-24 02:59:37,682 INFO L226 Difference]: Without dead ends: 9024 [2024-10-24 02:59:37,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:37,695 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 94 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:37,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 299 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2024-10-24 02:59:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 8964. [2024-10-24 02:59:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 7419 states have (on average 1.4515433346812239) internal successors, (10769), 7540 states have internal predecessors, (10769), 901 states have call successors, (901), 563 states have call predecessors, (901), 643 states have return successors, (1353), 868 states have call predecessors, (1353), 901 states have call successors, (1353) [2024-10-24 02:59:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 13023 transitions. [2024-10-24 02:59:38,554 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 13023 transitions. Word has length 127 [2024-10-24 02:59:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:38,554 INFO L471 AbstractCegarLoop]: Abstraction has 8964 states and 13023 transitions. [2024-10-24 02:59:38,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 02:59:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 13023 transitions. [2024-10-24 02:59:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 02:59:38,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:38,569 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:38,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:38,774 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:38,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash -519454805, now seen corresponding path program 1 times [2024-10-24 02:59:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101331761] [2024-10-24 02:59:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 02:59:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 02:59:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:59:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 02:59:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 02:59:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101331761] [2024-10-24 02:59:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101331761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234681866] [2024-10-24 02:59:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:38,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:38,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:38,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 02:59:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:38,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 02:59:39,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234681866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:39,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762527414] [2024-10-24 02:59:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:39,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:39,018 INFO L87 Difference]: Start difference. First operand 8964 states and 13023 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:59:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:39,803 INFO L93 Difference]: Finished difference Result 18930 states and 27806 transitions. [2024-10-24 02:59:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 143 [2024-10-24 02:59:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:39,841 INFO L225 Difference]: With dead ends: 18930 [2024-10-24 02:59:39,841 INFO L226 Difference]: Without dead ends: 9977 [2024-10-24 02:59:39,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:39,866 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 128 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:39,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 185 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states. [2024-10-24 02:59:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 9977. [2024-10-24 02:59:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9977 states, 8324 states have (on average 1.405333974050937) internal successors, (11698), 8455 states have internal predecessors, (11698), 926 states have call successors, (926), 626 states have call predecessors, (926), 726 states have return successors, (1401), 903 states have call predecessors, (1401), 926 states have call successors, (1401) [2024-10-24 02:59:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9977 states to 9977 states and 14025 transitions. [2024-10-24 02:59:40,687 INFO L78 Accepts]: Start accepts. Automaton has 9977 states and 14025 transitions. Word has length 143 [2024-10-24 02:59:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:40,688 INFO L471 AbstractCegarLoop]: Abstraction has 9977 states and 14025 transitions. [2024-10-24 02:59:40,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:59:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9977 states and 14025 transitions. [2024-10-24 02:59:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 02:59:40,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:40,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 02:59:40,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 02:59:40,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-24 02:59:40,902 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:40,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 908697801, now seen corresponding path program 1 times [2024-10-24 02:59:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331534447] [2024-10-24 02:59:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:40,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 02:59:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 02:59:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:59:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 02:59:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 02:59:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331534447] [2024-10-24 02:59:41,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331534447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207128128] [2024-10-24 02:59:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:41,019 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:41,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 02:59:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:59:41,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-24 02:59:41,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207128128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:41,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:41,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208139149] [2024-10-24 02:59:41,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:41,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:41,149 INFO L87 Difference]: Start difference. First operand 9977 states and 14025 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 02:59:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:41,917 INFO L93 Difference]: Finished difference Result 21023 states and 29420 transitions. [2024-10-24 02:59:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 143 [2024-10-24 02:59:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:41,965 INFO L225 Difference]: With dead ends: 21023 [2024-10-24 02:59:41,965 INFO L226 Difference]: Without dead ends: 11057 [2024-10-24 02:59:41,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:41,991 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 150 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:41,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 304 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11057 states. [2024-10-24 02:59:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11057 to 10764. [2024-10-24 02:59:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10764 states, 9055 states have (on average 1.3627829928216455) internal successors, (12340), 9176 states have internal predecessors, (12340), 924 states have call successors, (924), 684 states have call predecessors, (924), 784 states have return successors, (1397), 911 states have call predecessors, (1397), 924 states have call successors, (1397) [2024-10-24 02:59:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 14661 transitions. [2024-10-24 02:59:43,348 INFO L78 Accepts]: Start accepts. Automaton has 10764 states and 14661 transitions. Word has length 143 [2024-10-24 02:59:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:43,348 INFO L471 AbstractCegarLoop]: Abstraction has 10764 states and 14661 transitions. [2024-10-24 02:59:43,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 02:59:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10764 states and 14661 transitions. [2024-10-24 02:59:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 02:59:43,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:43,364 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:43,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 02:59:43,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:43,568 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:43,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2014549899, now seen corresponding path program 1 times [2024-10-24 02:59:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083231922] [2024-10-24 02:59:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:59:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 02:59:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 02:59:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 02:59:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 02:59:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083231922] [2024-10-24 02:59:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083231922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068515883] [2024-10-24 02:59:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:43,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:43,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:43,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:43,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 02:59:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:43,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:59:43,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068515883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:43,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680254811] [2024-10-24 02:59:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:43,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:43,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:43,870 INFO L87 Difference]: Start difference. First operand 10764 states and 14661 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:59:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:45,896 INFO L93 Difference]: Finished difference Result 31714 states and 43626 transitions. [2024-10-24 02:59:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:45,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2024-10-24 02:59:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:46,029 INFO L225 Difference]: With dead ends: 31714 [2024-10-24 02:59:46,029 INFO L226 Difference]: Without dead ends: 20961 [2024-10-24 02:59:46,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:46,082 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 135 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:46,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 447 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2024-10-24 02:59:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 20947. [2024-10-24 02:59:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20947 states, 17615 states have (on average 1.3526539880783424) internal successors, (23827), 17857 states have internal predecessors, (23827), 1791 states have call successors, (1791), 1340 states have call predecessors, (1791), 1540 states have return successors, (3182), 1765 states have call predecessors, (3182), 1791 states have call successors, (3182) [2024-10-24 02:59:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20947 states to 20947 states and 28800 transitions. [2024-10-24 02:59:47,965 INFO L78 Accepts]: Start accepts. Automaton has 20947 states and 28800 transitions. Word has length 144 [2024-10-24 02:59:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:47,966 INFO L471 AbstractCegarLoop]: Abstraction has 20947 states and 28800 transitions. [2024-10-24 02:59:47,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:59:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 20947 states and 28800 transitions. [2024-10-24 02:59:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 02:59:48,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:48,022 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:48,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:48,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 02:59:48,223 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:48,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 870056262, now seen corresponding path program 1 times [2024-10-24 02:59:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173235678] [2024-10-24 02:59:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:59:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 02:59:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:59:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 02:59:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-24 02:59:48,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:48,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173235678] [2024-10-24 02:59:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173235678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:48,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882566894] [2024-10-24 02:59:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:48,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:48,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:48,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 02:59:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:48,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 02:59:48,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:48,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882566894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:48,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:48,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391630528] [2024-10-24 02:59:48,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:48,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:48,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:48,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:48,546 INFO L87 Difference]: Start difference. First operand 20947 states and 28800 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:59:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:49,421 INFO L93 Difference]: Finished difference Result 32214 states and 44605 transitions. [2024-10-24 02:59:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2024-10-24 02:59:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:49,476 INFO L225 Difference]: With dead ends: 32214 [2024-10-24 02:59:49,477 INFO L226 Difference]: Without dead ends: 13528 [2024-10-24 02:59:49,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:49,512 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 106 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:49,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 177 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2024-10-24 02:59:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 12452. [2024-10-24 02:59:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12452 states, 10476 states have (on average 1.3036464299350898) internal successors, (13657), 10582 states have internal predecessors, (13657), 1071 states have call successors, (1071), 816 states have call predecessors, (1071), 904 states have return successors, (1554), 1061 states have call predecessors, (1554), 1071 states have call successors, (1554) [2024-10-24 02:59:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 16282 transitions. [2024-10-24 02:59:50,522 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 16282 transitions. Word has length 144 [2024-10-24 02:59:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:50,523 INFO L471 AbstractCegarLoop]: Abstraction has 12452 states and 16282 transitions. [2024-10-24 02:59:50,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:59:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 16282 transitions. [2024-10-24 02:59:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 02:59:50,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:50,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 02:59:50,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 02:59:50,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 02:59:50,738 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:50,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 157059094, now seen corresponding path program 1 times [2024-10-24 02:59:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:50,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411265336] [2024-10-24 02:59:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 02:59:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 02:59:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 02:59:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 02:59:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-24 02:59:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411265336] [2024-10-24 02:59:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411265336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695702723] [2024-10-24 02:59:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:50,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:50,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 02:59:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:50,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:59:50,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 02:59:50,943 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695702723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:50,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:50,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274559099] [2024-10-24 02:59:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:50,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:50,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:50,945 INFO L87 Difference]: Start difference. First operand 12452 states and 16282 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:59:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:53,539 INFO L93 Difference]: Finished difference Result 36165 states and 47894 transitions. [2024-10-24 02:59:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2024-10-24 02:59:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:53,636 INFO L225 Difference]: With dead ends: 36165 [2024-10-24 02:59:53,636 INFO L226 Difference]: Without dead ends: 23728 [2024-10-24 02:59:53,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:53,672 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 128 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:53,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 316 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23728 states. [2024-10-24 02:59:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23728 to 23086. [2024-10-24 02:59:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23086 states, 19348 states have (on average 1.2919681620839363) internal successors, (24997), 19554 states have internal predecessors, (24997), 2041 states have call successors, (2041), 1532 states have call predecessors, (2041), 1696 states have return successors, (3538), 2015 states have call predecessors, (3538), 2041 states have call successors, (3538) [2024-10-24 02:59:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23086 states to 23086 states and 30576 transitions. [2024-10-24 02:59:55,564 INFO L78 Accepts]: Start accepts. Automaton has 23086 states and 30576 transitions. Word has length 145 [2024-10-24 02:59:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:55,565 INFO L471 AbstractCegarLoop]: Abstraction has 23086 states and 30576 transitions. [2024-10-24 02:59:55,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:59:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23086 states and 30576 transitions. [2024-10-24 02:59:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 02:59:55,581 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:55,582 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:55,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 02:59:55,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 02:59:55,782 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:55,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1050549996, now seen corresponding path program 1 times [2024-10-24 02:59:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:55,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665395764] [2024-10-24 02:59:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 02:59:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 02:59:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 02:59:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 02:59:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-24 02:59:55,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665395764] [2024-10-24 02:59:55,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665395764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:55,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:55,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:59:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461753137] [2024-10-24 02:59:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:55,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:59:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:59:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:55,840 INFO L87 Difference]: Start difference. First operand 23086 states and 30576 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 02:59:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:57,686 INFO L93 Difference]: Finished difference Result 44647 states and 58860 transitions. [2024-10-24 02:59:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:59:57,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2024-10-24 02:59:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:57,766 INFO L225 Difference]: With dead ends: 44647 [2024-10-24 02:59:57,766 INFO L226 Difference]: Without dead ends: 21574 [2024-10-24 02:59:57,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:57,810 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 293 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:57,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 204 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21574 states. [2024-10-24 02:59:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21574 to 19418. [2024-10-24 02:59:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19418 states, 16262 states have (on average 1.2919075144508672) internal successors, (21009), 16625 states have internal predecessors, (21009), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-24 02:59:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 25547 transitions. [2024-10-24 02:59:59,452 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 25547 transitions. Word has length 145 [2024-10-24 02:59:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:59,453 INFO L471 AbstractCegarLoop]: Abstraction has 19418 states and 25547 transitions. [2024-10-24 02:59:59,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 02:59:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 25547 transitions. [2024-10-24 02:59:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-24 02:59:59,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:59,465 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:59,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 02:59:59,465 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:59,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1743829066, now seen corresponding path program 1 times [2024-10-24 02:59:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983081787] [2024-10-24 02:59:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:59:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:59:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 02:59:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-24 02:59:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-24 02:59:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 02:59:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983081787] [2024-10-24 02:59:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983081787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559284866] [2024-10-24 02:59:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:59,533 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:59,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 02:59:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:59,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:59:59,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 02:59:59,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559284866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202409099] [2024-10-24 02:59:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:59,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:59,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:59,647 INFO L87 Difference]: Start difference. First operand 19418 states and 25547 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 03:00:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:01,289 INFO L93 Difference]: Finished difference Result 32606 states and 44397 transitions. [2024-10-24 03:00:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:01,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2024-10-24 03:00:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:01,354 INFO L225 Difference]: With dead ends: 32606 [2024-10-24 03:00:01,354 INFO L226 Difference]: Without dead ends: 19433 [2024-10-24 03:00:01,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:01,382 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 120 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:01,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 384 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2024-10-24 03:00:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19394. [2024-10-24 03:00:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19394 states, 16238 states have (on average 1.263948762162828) internal successors, (20524), 16601 states have internal predecessors, (20524), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-24 03:00:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19394 states to 19394 states and 25062 transitions. [2024-10-24 03:00:03,038 INFO L78 Accepts]: Start accepts. Automaton has 19394 states and 25062 transitions. Word has length 149 [2024-10-24 03:00:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:03,038 INFO L471 AbstractCegarLoop]: Abstraction has 19394 states and 25062 transitions. [2024-10-24 03:00:03,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 03:00:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 19394 states and 25062 transitions. [2024-10-24 03:00:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-24 03:00:03,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:03,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:03,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 03:00:03,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 03:00:03,256 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:03,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 446624198, now seen corresponding path program 1 times [2024-10-24 03:00:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405938346] [2024-10-24 03:00:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-24 03:00:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 03:00:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405938346] [2024-10-24 03:00:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405938346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769554446] [2024-10-24 03:00:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:03,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:03,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 03:00:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 03:00:03,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 03:00:03,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769554446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-24 03:00:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123195714] [2024-10-24 03:00:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:00:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:00:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:00:03,504 INFO L87 Difference]: Start difference. First operand 19394 states and 25062 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:05,249 INFO L93 Difference]: Finished difference Result 38705 states and 50497 transitions. [2024-10-24 03:00:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:00:05,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-24 03:00:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:05,323 INFO L225 Difference]: With dead ends: 38705 [2024-10-24 03:00:05,323 INFO L226 Difference]: Without dead ends: 19322 [2024-10-24 03:00:05,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:00:05,359 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 170 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:05,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 240 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19322 states. [2024-10-24 03:00:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19322 to 19322. [2024-10-24 03:00:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19322 states, 16166 states have (on average 1.2306074477298032) internal successors, (19894), 16529 states have internal predecessors, (19894), 1551 states have call successors, (1551), 1172 states have call predecessors, (1551), 1604 states have return successors, (2987), 1628 states have call predecessors, (2987), 1551 states have call successors, (2987) [2024-10-24 03:00:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19322 states to 19322 states and 24432 transitions. [2024-10-24 03:00:07,206 INFO L78 Accepts]: Start accepts. Automaton has 19322 states and 24432 transitions. Word has length 151 [2024-10-24 03:00:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:07,206 INFO L471 AbstractCegarLoop]: Abstraction has 19322 states and 24432 transitions. [2024-10-24 03:00:07,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 19322 states and 24432 transitions. [2024-10-24 03:00:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-24 03:00:07,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:07,222 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:07,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 03:00:07,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:07,423 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:07,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1200738744, now seen corresponding path program 1 times [2024-10-24 03:00:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315281941] [2024-10-24 03:00:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-24 03:00:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 03:00:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315281941] [2024-10-24 03:00:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315281941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859340108] [2024-10-24 03:00:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:07,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:07,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:07,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:07,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 03:00:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 03:00:07,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 03:00:07,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859340108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-24 03:00:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557934607] [2024-10-24 03:00:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:07,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:00:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:00:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:00:07,677 INFO L87 Difference]: Start difference. First operand 19322 states and 24432 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:09,513 INFO L93 Difference]: Finished difference Result 36139 states and 46947 transitions. [2024-10-24 03:00:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:00:09,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-24 03:00:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:09,581 INFO L225 Difference]: With dead ends: 36139 [2024-10-24 03:00:09,582 INFO L226 Difference]: Without dead ends: 17834 [2024-10-24 03:00:09,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:00:09,616 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 193 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:09,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 235 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:00:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17834 states. [2024-10-24 03:00:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17834 to 15760. [2024-10-24 03:00:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15760 states, 13204 states have (on average 1.1926688882156922) internal successors, (15748), 13494 states have internal predecessors, (15748), 1251 states have call successors, (1251), 952 states have call predecessors, (1251), 1304 states have return successors, (2325), 1317 states have call predecessors, (2325), 1251 states have call successors, (2325) [2024-10-24 03:00:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15760 states to 15760 states and 19324 transitions. [2024-10-24 03:00:11,539 INFO L78 Accepts]: Start accepts. Automaton has 15760 states and 19324 transitions. Word has length 151 [2024-10-24 03:00:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:11,540 INFO L471 AbstractCegarLoop]: Abstraction has 15760 states and 19324 transitions. [2024-10-24 03:00:11,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15760 states and 19324 transitions. [2024-10-24 03:00:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-24 03:00:11,549 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:11,549 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:11,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:11,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:11,750 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:11,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2055643978, now seen corresponding path program 1 times [2024-10-24 03:00:11,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720617562] [2024-10-24 03:00:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-24 03:00:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 03:00:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720617562] [2024-10-24 03:00:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720617562] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347168798] [2024-10-24 03:00:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:11,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:11,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:11,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 03:00:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:11,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 03:00:11,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 03:00:11,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347168798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-24 03:00:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448383200] [2024-10-24 03:00:11,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:11,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:00:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:00:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:00:11,981 INFO L87 Difference]: Start difference. First operand 15760 states and 19324 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:13,170 INFO L93 Difference]: Finished difference Result 23982 states and 29693 transitions. [2024-10-24 03:00:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:00:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-24 03:00:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:13,219 INFO L225 Difference]: With dead ends: 23982 [2024-10-24 03:00:13,219 INFO L226 Difference]: Without dead ends: 13068 [2024-10-24 03:00:13,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:00:13,234 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 161 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:13,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 226 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13068 states. [2024-10-24 03:00:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13068 to 9982. [2024-10-24 03:00:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 8382 states have (on average 1.1712001908852303) internal successors, (9817), 8549 states have internal predecessors, (9817), 799 states have call successors, (799), 596 states have call predecessors, (799), 800 states have return successors, (1455), 838 states have call predecessors, (1455), 799 states have call successors, (1455) [2024-10-24 03:00:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 12071 transitions. [2024-10-24 03:00:14,117 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 12071 transitions. Word has length 151 [2024-10-24 03:00:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:14,118 INFO L471 AbstractCegarLoop]: Abstraction has 9982 states and 12071 transitions. [2024-10-24 03:00:14,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 12071 transitions. [2024-10-24 03:00:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-24 03:00:14,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:14,123 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:14,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:14,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:14,328 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:14,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1767966968, now seen corresponding path program 1 times [2024-10-24 03:00:14,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913749592] [2024-10-24 03:00:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-24 03:00:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 03:00:14,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913749592] [2024-10-24 03:00:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913749592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423071104] [2024-10-24 03:00:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:14,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:14,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:14,407 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:14,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 03:00:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:14,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:00:14,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 03:00:14,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423071104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:14,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-24 03:00:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740714935] [2024-10-24 03:00:14,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:14,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:14,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:14,504 INFO L87 Difference]: Start difference. First operand 9982 states and 12071 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:15,384 INFO L93 Difference]: Finished difference Result 19589 states and 24156 transitions. [2024-10-24 03:00:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:00:15,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-24 03:00:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:15,423 INFO L225 Difference]: With dead ends: 19589 [2024-10-24 03:00:15,423 INFO L226 Difference]: Without dead ends: 9620 [2024-10-24 03:00:15,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:15,440 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:15,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9620 states. [2024-10-24 03:00:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9620 to 9600. [2024-10-24 03:00:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9600 states, 8023 states have (on average 1.1494453446341768) internal successors, (9222), 8172 states have internal predecessors, (9222), 799 states have call successors, (799), 596 states have call predecessors, (799), 777 states have return successors, (1335), 833 states have call predecessors, (1335), 799 states have call successors, (1335) [2024-10-24 03:00:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9600 states to 9600 states and 11356 transitions. [2024-10-24 03:00:16,322 INFO L78 Accepts]: Start accepts. Automaton has 9600 states and 11356 transitions. Word has length 151 [2024-10-24 03:00:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:16,322 INFO L471 AbstractCegarLoop]: Abstraction has 9600 states and 11356 transitions. [2024-10-24 03:00:16,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 9600 states and 11356 transitions. [2024-10-24 03:00:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-24 03:00:16,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:16,327 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:16,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:16,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:16,528 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:16,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -470597814, now seen corresponding path program 1 times [2024-10-24 03:00:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24111393] [2024-10-24 03:00:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-24 03:00:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-24 03:00:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24111393] [2024-10-24 03:00:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24111393] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333062279] [2024-10-24 03:00:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:16,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:16,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:16,625 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:16,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 03:00:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:16,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:00:16,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-24 03:00:16,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333062279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:16,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-24 03:00:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536243828] [2024-10-24 03:00:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:16,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:16,732 INFO L87 Difference]: Start difference. First operand 9600 states and 11356 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:17,448 INFO L93 Difference]: Finished difference Result 15867 states and 19034 transitions. [2024-10-24 03:00:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:00:17,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2024-10-24 03:00:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:17,481 INFO L225 Difference]: With dead ends: 15867 [2024-10-24 03:00:17,481 INFO L226 Difference]: Without dead ends: 6277 [2024-10-24 03:00:17,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:17,496 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:17,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2024-10-24 03:00:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 6277. [2024-10-24 03:00:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6277 states, 5296 states have (on average 1.1367069486404835) internal successors, (6020), 5359 states have internal predecessors, (6020), 514 states have call successors, (514), 386 states have call predecessors, (514), 466 states have return successors, (732), 532 states have call predecessors, (732), 514 states have call successors, (732) [2024-10-24 03:00:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 7266 transitions. [2024-10-24 03:00:18,053 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 7266 transitions. Word has length 151 [2024-10-24 03:00:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:18,054 INFO L471 AbstractCegarLoop]: Abstraction has 6277 states and 7266 transitions. [2024-10-24 03:00:18,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:00:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 7266 transitions. [2024-10-24 03:00:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-24 03:00:18,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:18,059 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:18,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:18,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:18,262 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:18,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash 778141538, now seen corresponding path program 1 times [2024-10-24 03:00:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:18,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874891281] [2024-10-24 03:00:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:00:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 03:00:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-24 03:00:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 03:00:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-24 03:00:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-24 03:00:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:18,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874891281] [2024-10-24 03:00:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874891281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:18,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975836302] [2024-10-24 03:00:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:18,381 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:18,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 03:00:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:18,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:00:18,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 03:00:18,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975836302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:18,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-24 03:00:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026301245] [2024-10-24 03:00:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:18,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:00:18,503 INFO L87 Difference]: Start difference. First operand 6277 states and 7266 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 03:00:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:18,784 INFO L93 Difference]: Finished difference Result 8249 states and 9527 transitions. [2024-10-24 03:00:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:18,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 179 [2024-10-24 03:00:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:18,812 INFO L225 Difference]: With dead ends: 8249 [2024-10-24 03:00:18,813 INFO L226 Difference]: Without dead ends: 1914 [2024-10-24 03:00:18,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:00:18,820 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 115 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:18,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 336 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-10-24 03:00:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2024-10-24 03:00:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1609 states have (on average 1.1050341827221877) internal successors, (1778), 1621 states have internal predecessors, (1778), 174 states have call successors, (174), 122 states have call predecessors, (174), 130 states have return successors, (189), 171 states have call predecessors, (189), 174 states have call successors, (189) [2024-10-24 03:00:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2141 transitions. [2024-10-24 03:00:19,000 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2141 transitions. Word has length 179 [2024-10-24 03:00:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:19,001 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2141 transitions. [2024-10-24 03:00:19,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 03:00:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2141 transitions. [2024-10-24 03:00:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-24 03:00:19,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:19,003 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:19,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-24 03:00:19,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:19,204 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:19,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -79866157, now seen corresponding path program 1 times [2024-10-24 03:00:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:19,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957608217] [2024-10-24 03:00:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 03:00:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-24 03:00:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-24 03:00:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-24 03:00:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-24 03:00:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957608217] [2024-10-24 03:00:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957608217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529218195] [2024-10-24 03:00:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:19,302 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:19,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-24 03:00:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:19,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 03:00:19,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 03:00:19,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529218195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:19,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2024-10-24 03:00:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241716156] [2024-10-24 03:00:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:19,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:19,457 INFO L87 Difference]: Start difference. First operand 1914 states and 2141 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-24 03:00:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:19,644 INFO L93 Difference]: Finished difference Result 3323 states and 3745 transitions. [2024-10-24 03:00:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 181 [2024-10-24 03:00:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:19,671 INFO L225 Difference]: With dead ends: 3323 [2024-10-24 03:00:19,671 INFO L226 Difference]: Without dead ends: 1914 [2024-10-24 03:00:19,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:19,673 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 86 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:19,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 295 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-10-24 03:00:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2024-10-24 03:00:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1609 states have (on average 1.093847110006215) internal successors, (1760), 1621 states have internal predecessors, (1760), 174 states have call successors, (174), 122 states have call predecessors, (174), 130 states have return successors, (189), 171 states have call predecessors, (189), 174 states have call successors, (189) [2024-10-24 03:00:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2123 transitions. [2024-10-24 03:00:19,862 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2123 transitions. Word has length 181 [2024-10-24 03:00:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:19,863 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2123 transitions. [2024-10-24 03:00:19,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-24 03:00:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2123 transitions. [2024-10-24 03:00:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-24 03:00:19,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:19,866 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:19,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:20,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-24 03:00:20,067 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:20,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash 677916105, now seen corresponding path program 1 times [2024-10-24 03:00:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253611152] [2024-10-24 03:00:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:20,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:00:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:00:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 03:00:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-24 03:00:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-24 03:00:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 03:00:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-24 03:00:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-24 03:00:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253611152] [2024-10-24 03:00:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253611152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:20,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:20,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:00:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881255284] [2024-10-24 03:00:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:20,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:00:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:00:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:20,236 INFO L87 Difference]: Start difference. First operand 1914 states and 2123 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 03:00:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:20,957 INFO L93 Difference]: Finished difference Result 2137 states and 2364 transitions. [2024-10-24 03:00:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:00:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 183 [2024-10-24 03:00:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:20,977 INFO L225 Difference]: With dead ends: 2137 [2024-10-24 03:00:20,977 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 03:00:20,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:00:20,979 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 622 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:20,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 631 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:00:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 03:00:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 03:00:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 03:00:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 03:00:20,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2024-10-24 03:00:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:20,999 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 03:00:20,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 03:00:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 03:00:20,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 03:00:21,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-24 03:00:21,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-24 03:00:21,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-24 03:00:21,004 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:21,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 03:00:30,827 WARN L286 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 106 DAG size of output: 265 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-24 03:00:37,953 WARN L286 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 111 DAG size of output: 270 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-24 03:00:43,018 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 102 DAG size of output: 229 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)