./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_2.cil-1+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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_2.cil-1+token_ring.04.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 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:43:09,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:43:09,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:43:09,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:43:09,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:43:09,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:43:09,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:43:09,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:43:09,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:43:09,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:43:09,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:43:09,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:43:09,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:43:09,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:43:09,690 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:43:09,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:43:09,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:43:09,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:43:09,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:43:09,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:43:09,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:43:09,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:43:09,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:43:09,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:43:09,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:43:09,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:43:09,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:43:09,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:43:09,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:43:09,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:43:09,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:43:09,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:43:09,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:09,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:43:09,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:43:09,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:43:09,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:43:09,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:43:09,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:43:09,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:43:09,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:43:09,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:43:09,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc [2024-10-12 21:43:09,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:43:10,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:43:10,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:43:10,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:43:10,012 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:43:10,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2024-10-12 21:43:11,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:43:11,694 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:43:11,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2024-10-12 21:43:11,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d21960b/744bdd1811a04f6caeda7f2cb58f7b0f/FLAGba9424c5d [2024-10-12 21:43:12,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d21960b/744bdd1811a04f6caeda7f2cb58f7b0f [2024-10-12 21:43:12,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:43:12,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:43:12,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:12,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:43:12,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:43:12,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a642c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12, skipping insertion in model container [2024-10-12 21:43:12,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:43:12,280 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_2.cil-1+token_ring.04.cil-1.c[914,927] [2024-10-12 21:43:12,344 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_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2024-10-12 21:43:12,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:12,447 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:43:12,460 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_2.cil-1+token_ring.04.cil-1.c[914,927] [2024-10-12 21:43:12,487 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_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2024-10-12 21:43:12,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:12,553 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:43:12,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12 WrapperNode [2024-10-12 21:43:12,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:12,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:12,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:43:12,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:43:12,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,617 INFO L138 Inliner]: procedures = 61, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 588 [2024-10-12 21:43:12,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:12,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:43:12,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:43:12,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:43:12,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,664 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]. [2024-10-12 21:43:12,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:43:12,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:43:12,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:43:12,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:43:12,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (1/1) ... [2024-10-12 21:43:12,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:43:12,777 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) [2024-10-12 21:43:12,779 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 [2024-10-12 21:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:43:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-12 21:43:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-12 21:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:43:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-12 21:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-12 21:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-12 21:43:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-12 21:43:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:43:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:43:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-12 21:43:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-12 21:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:43:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:43:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:43:12,952 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:43:12,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:43:13,657 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-10-12 21:43:13,658 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:43:13,722 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:43:13,724 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-12 21:43:13,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:13 BoogieIcfgContainer [2024-10-12 21:43:13,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:43:13,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:43:13,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:43:13,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:43:13,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:43:12" (1/3) ... [2024-10-12 21:43:13,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfcd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:13, skipping insertion in model container [2024-10-12 21:43:13,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:12" (2/3) ... [2024-10-12 21:43:13,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfcd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:13, skipping insertion in model container [2024-10-12 21:43:13,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:13" (3/3) ... [2024-10-12 21:43:13,733 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2024-10-12 21:43:13,751 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:43:13,752 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:43:13,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:43:13,837 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;@e84ede2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:43:13,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:43:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-12 21:43:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:13,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:13,860 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] [2024-10-12 21:43:13,861 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:13,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 504153522, now seen corresponding path program 1 times [2024-10-12 21:43:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126678743] [2024-10-12 21:43:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126678743] [2024-10-12 21:43:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126678743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:14,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621047446] [2024-10-12 21:43:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:14,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:14,570 INFO L87 Difference]: Start difference. First operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:16,019 INFO L93 Difference]: Finished difference Result 647 states and 1025 transitions. [2024-10-12 21:43:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:43:16,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:16,037 INFO L225 Difference]: With dead ends: 647 [2024-10-12 21:43:16,037 INFO L226 Difference]: Without dead ends: 404 [2024-10-12 21:43:16,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:43:16,045 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 804 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:16,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1228 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:43:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-10-12 21:43:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 342. [2024-10-12 21:43:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 274 states have (on average 1.5255474452554745) internal successors, (418), 281 states have internal predecessors, (418), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2024-10-12 21:43:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 513 transitions. [2024-10-12 21:43:16,154 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 513 transitions. Word has length 58 [2024-10-12 21:43:16,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:16,154 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 513 transitions. [2024-10-12 21:43:16,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 513 transitions. [2024-10-12 21:43:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:16,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:16,161 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] [2024-10-12 21:43:16,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:43:16,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:16,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1862541072, now seen corresponding path program 1 times [2024-10-12 21:43:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:16,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199649279] [2024-10-12 21:43:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199649279] [2024-10-12 21:43:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199649279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:16,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 21:43:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213737992] [2024-10-12 21:43:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:16,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:43:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:43:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:43:16,412 INFO L87 Difference]: Start difference. First operand 342 states and 513 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-12 21:43:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:18,328 INFO L93 Difference]: Finished difference Result 1219 states and 1772 transitions. [2024-10-12 21:43:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-12 21:43:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2024-10-12 21:43:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:18,337 INFO L225 Difference]: With dead ends: 1219 [2024-10-12 21:43:18,337 INFO L226 Difference]: Without dead ends: 1041 [2024-10-12 21:43:18,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 21:43:18,343 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 2292 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:18,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 1238 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 21:43:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-10-12 21:43:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 949. [2024-10-12 21:43:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 743 states have (on average 1.4481830417227457) internal successors, (1076), 763 states have internal predecessors, (1076), 110 states have call successors, (110), 81 states have call predecessors, (110), 94 states have return successors, (141), 107 states have call predecessors, (141), 108 states have call successors, (141) [2024-10-12 21:43:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1327 transitions. [2024-10-12 21:43:18,479 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1327 transitions. Word has length 58 [2024-10-12 21:43:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:18,481 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1327 transitions. [2024-10-12 21:43:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-12 21:43:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1327 transitions. [2024-10-12 21:43:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:18,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:18,485 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] [2024-10-12 21:43:18,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:43:18,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:18,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1475497841, now seen corresponding path program 1 times [2024-10-12 21:43:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895564357] [2024-10-12 21:43:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:18,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895564357] [2024-10-12 21:43:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895564357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382606013] [2024-10-12 21:43:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:18,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:18,725 INFO L87 Difference]: Start difference. First operand 949 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:19,639 INFO L93 Difference]: Finished difference Result 1785 states and 2469 transitions. [2024-10-12 21:43:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:43:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:19,650 INFO L225 Difference]: With dead ends: 1785 [2024-10-12 21:43:19,650 INFO L226 Difference]: Without dead ends: 1007 [2024-10-12 21:43:19,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:19,654 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 452 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:19,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1194 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2024-10-12 21:43:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 965. [2024-10-12 21:43:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 755 states have (on average 1.433112582781457) internal successors, (1082), 775 states have internal predecessors, (1082), 110 states have call successors, (110), 81 states have call predecessors, (110), 98 states have return successors, (145), 111 states have call predecessors, (145), 108 states have call successors, (145) [2024-10-12 21:43:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1337 transitions. [2024-10-12 21:43:19,756 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1337 transitions. Word has length 58 [2024-10-12 21:43:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:19,756 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1337 transitions. [2024-10-12 21:43:19,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1337 transitions. [2024-10-12 21:43:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:19,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:19,758 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] [2024-10-12 21:43:19,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:43:19,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:19,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash -768485457, now seen corresponding path program 1 times [2024-10-12 21:43:19,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732827267] [2024-10-12 21:43:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732827267] [2024-10-12 21:43:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732827267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252406982] [2024-10-12 21:43:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:19,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:19,913 INFO L87 Difference]: Start difference. First operand 965 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:20,817 INFO L93 Difference]: Finished difference Result 1849 states and 2535 transitions. [2024-10-12 21:43:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:43:20,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:43:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:20,826 INFO L225 Difference]: With dead ends: 1849 [2024-10-12 21:43:20,827 INFO L226 Difference]: Without dead ends: 1055 [2024-10-12 21:43:20,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:20,830 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 307 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:20,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1338 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-10-12 21:43:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1005. [2024-10-12 21:43:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 785 states have (on average 1.41656050955414) internal successors, (1112), 805 states have internal predecessors, (1112), 110 states have call successors, (110), 81 states have call predecessors, (110), 108 states have return successors, (155), 121 states have call predecessors, (155), 108 states have call successors, (155) [2024-10-12 21:43:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1377 transitions. [2024-10-12 21:43:20,932 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1377 transitions. Word has length 58 [2024-10-12 21:43:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:20,935 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1377 transitions. [2024-10-12 21:43:20,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1377 transitions. [2024-10-12 21:43:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:20,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:20,936 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] [2024-10-12 21:43:20,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:43:20,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:20,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:20,937 INFO L85 PathProgramCache]: Analyzing trace with hash -706445843, now seen corresponding path program 1 times [2024-10-12 21:43:20,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:20,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737121531] [2024-10-12 21:43:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:20,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737121531] [2024-10-12 21:43:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737121531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:21,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399102390] [2024-10-12 21:43:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:21,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:21,120 INFO L87 Difference]: Start difference. First operand 1005 states and 1377 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:22,021 INFO L93 Difference]: Finished difference Result 2051 states and 2769 transitions. [2024-10-12 21:43:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:43:22,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:22,030 INFO L225 Difference]: With dead ends: 2051 [2024-10-12 21:43:22,030 INFO L226 Difference]: Without dead ends: 1435 [2024-10-12 21:43:22,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:43:22,034 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 541 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:22,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1108 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2024-10-12 21:43:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1313. [2024-10-12 21:43:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1027 states have (on average 1.3836416747809153) internal successors, (1421), 1050 states have internal predecessors, (1421), 142 states have call successors, (142), 111 states have call predecessors, (142), 142 states have return successors, (192), 154 states have call predecessors, (192), 140 states have call successors, (192) [2024-10-12 21:43:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1755 transitions. [2024-10-12 21:43:22,137 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1755 transitions. Word has length 58 [2024-10-12 21:43:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:22,137 INFO L471 AbstractCegarLoop]: Abstraction has 1313 states and 1755 transitions. [2024-10-12 21:43:22,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1755 transitions. [2024-10-12 21:43:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:22,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:22,139 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] [2024-10-12 21:43:22,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:43:22,139 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:22,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -487591125, now seen corresponding path program 1 times [2024-10-12 21:43:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406134555] [2024-10-12 21:43:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:22,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:22,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406134555] [2024-10-12 21:43:22,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406134555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:22,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:22,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142341900] [2024-10-12 21:43:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:22,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:22,335 INFO L87 Difference]: Start difference. First operand 1313 states and 1755 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:23,266 INFO L93 Difference]: Finished difference Result 2303 states and 3032 transitions. [2024-10-12 21:43:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:43:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:23,296 INFO L225 Difference]: With dead ends: 2303 [2024-10-12 21:43:23,296 INFO L226 Difference]: Without dead ends: 1379 [2024-10-12 21:43:23,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:43:23,300 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 914 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:23,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 825 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-10-12 21:43:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1228. [2024-10-12 21:43:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 965 states have (on average 1.3823834196891192) internal successors, (1334), 983 states have internal predecessors, (1334), 134 states have call successors, (134), 104 states have call predecessors, (134), 127 states have return successors, (170), 142 states have call predecessors, (170), 132 states have call successors, (170) [2024-10-12 21:43:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1638 transitions. [2024-10-12 21:43:23,420 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1638 transitions. Word has length 58 [2024-10-12 21:43:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:23,422 INFO L471 AbstractCegarLoop]: Abstraction has 1228 states and 1638 transitions. [2024-10-12 21:43:23,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1638 transitions. [2024-10-12 21:43:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:23,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:23,426 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] [2024-10-12 21:43:23,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:43:23,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:23,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash -64889299, now seen corresponding path program 1 times [2024-10-12 21:43:23,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271248376] [2024-10-12 21:43:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:23,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:23,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271248376] [2024-10-12 21:43:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271248376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:23,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:23,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731626126] [2024-10-12 21:43:23,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:23,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:23,550 INFO L87 Difference]: Start difference. First operand 1228 states and 1638 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:24,298 INFO L93 Difference]: Finished difference Result 3409 states and 4482 transitions. [2024-10-12 21:43:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:43:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:24,312 INFO L225 Difference]: With dead ends: 3409 [2024-10-12 21:43:24,312 INFO L226 Difference]: Without dead ends: 2352 [2024-10-12 21:43:24,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:24,318 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 909 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:24,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 661 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:43:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2024-10-12 21:43:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2216. [2024-10-12 21:43:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1715 states have (on average 1.338192419825073) internal successors, (2295), 1748 states have internal predecessors, (2295), 249 states have call successors, (249), 201 states have call predecessors, (249), 250 states have return successors, (356), 269 states have call predecessors, (356), 247 states have call successors, (356) [2024-10-12 21:43:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 2900 transitions. [2024-10-12 21:43:24,502 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 2900 transitions. Word has length 58 [2024-10-12 21:43:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:24,503 INFO L471 AbstractCegarLoop]: Abstraction has 2216 states and 2900 transitions. [2024-10-12 21:43:24,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 2900 transitions. [2024-10-12 21:43:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:43:24,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:24,504 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] [2024-10-12 21:43:24,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:43:24,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:24,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1823096331, now seen corresponding path program 1 times [2024-10-12 21:43:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595188965] [2024-10-12 21:43:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:24,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:24,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595188965] [2024-10-12 21:43:24,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595188965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:24,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:24,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744136336] [2024-10-12 21:43:24,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:24,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:24,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:24,587 INFO L87 Difference]: Start difference. First operand 2216 states and 2900 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:25,333 INFO L93 Difference]: Finished difference Result 5288 states and 6861 transitions. [2024-10-12 21:43:25,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:43:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2024-10-12 21:43:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:25,351 INFO L225 Difference]: With dead ends: 5288 [2024-10-12 21:43:25,351 INFO L226 Difference]: Without dead ends: 3246 [2024-10-12 21:43:25,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:43:25,358 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 902 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:25,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 526 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-10-12 21:43:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2969. [2024-10-12 21:43:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2284 states have (on average 1.3104203152364273) internal successors, (2993), 2330 states have internal predecessors, (2993), 342 states have call successors, (342), 283 states have call predecessors, (342), 341 states have return successors, (483), 358 states have call predecessors, (483), 340 states have call successors, (483) [2024-10-12 21:43:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 3818 transitions. [2024-10-12 21:43:25,651 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 3818 transitions. Word has length 59 [2024-10-12 21:43:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:25,651 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 3818 transitions. [2024-10-12 21:43:25,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 3818 transitions. [2024-10-12 21:43:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:43:25,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:25,654 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] [2024-10-12 21:43:25,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:43:25,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:25,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -652593130, now seen corresponding path program 1 times [2024-10-12 21:43:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948833172] [2024-10-12 21:43:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:25,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948833172] [2024-10-12 21:43:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948833172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741638171] [2024-10-12 21:43:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:25,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:25,726 INFO L87 Difference]: Start difference. First operand 2969 states and 3818 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:26,393 INFO L93 Difference]: Finished difference Result 6692 states and 8607 transitions. [2024-10-12 21:43:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:26,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-10-12 21:43:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:26,413 INFO L225 Difference]: With dead ends: 6692 [2024-10-12 21:43:26,413 INFO L226 Difference]: Without dead ends: 4263 [2024-10-12 21:43:26,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:26,420 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 661 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:26,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 640 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2024-10-12 21:43:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3954. [2024-10-12 21:43:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3029 states have (on average 1.2984483327830967) internal successors, (3933), 3074 states have internal predecessors, (3933), 465 states have call successors, (465), 389 states have call predecessors, (465), 458 states have return successors, (642), 493 states have call predecessors, (642), 463 states have call successors, (642) [2024-10-12 21:43:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 5040 transitions. [2024-10-12 21:43:26,770 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 5040 transitions. Word has length 60 [2024-10-12 21:43:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:26,771 INFO L471 AbstractCegarLoop]: Abstraction has 3954 states and 5040 transitions. [2024-10-12 21:43:26,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 5040 transitions. [2024-10-12 21:43:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 21:43:26,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:26,773 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:26,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:43:26,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:26,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1591850236, now seen corresponding path program 1 times [2024-10-12 21:43:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:26,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151911136] [2024-10-12 21:43:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151911136] [2024-10-12 21:43:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151911136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314486483] [2024-10-12 21:43:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:26,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:26,871 INFO L87 Difference]: Start difference. First operand 3954 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:27,760 INFO L93 Difference]: Finished difference Result 4655 states and 5899 transitions. [2024-10-12 21:43:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:43:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2024-10-12 21:43:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:27,782 INFO L225 Difference]: With dead ends: 4655 [2024-10-12 21:43:27,783 INFO L226 Difference]: Without dead ends: 4652 [2024-10-12 21:43:27,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:27,786 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 1224 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:27,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 526 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2024-10-12 21:43:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4071. [2024-10-12 21:43:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 3131 states have (on average 1.2983072500798467) internal successors, (4065), 3177 states have internal predecessors, (4065), 472 states have call successors, (472), 397 states have call predecessors, (472), 466 states have return successors, (653), 499 states have call predecessors, (653), 471 states have call successors, (653) [2024-10-12 21:43:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5190 transitions. [2024-10-12 21:43:28,169 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5190 transitions. Word has length 67 [2024-10-12 21:43:28,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:28,172 INFO L471 AbstractCegarLoop]: Abstraction has 4071 states and 5190 transitions. [2024-10-12 21:43:28,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5190 transitions. [2024-10-12 21:43:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 21:43:28,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:28,174 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:28,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:43:28,174 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:28,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:28,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2101865471, now seen corresponding path program 1 times [2024-10-12 21:43:28,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:28,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385991649] [2024-10-12 21:43:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:28,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385991649] [2024-10-12 21:43:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385991649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:43:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582965674] [2024-10-12 21:43:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:43:28,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:43:28,344 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) [2024-10-12 21:43:28,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:43:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:28,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:43:28,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:43:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:28,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:43:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582965674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:43:28,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:43:28,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-12 21:43:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496267488] [2024-10-12 21:43:28,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:43:28,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:43:28,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:43:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:43:28,837 INFO L87 Difference]: Start difference. First operand 4071 states and 5190 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:43:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:31,114 INFO L93 Difference]: Finished difference Result 8849 states and 11120 transitions. [2024-10-12 21:43:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 21:43:31,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2024-10-12 21:43:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:31,155 INFO L225 Difference]: With dead ends: 8849 [2024-10-12 21:43:31,155 INFO L226 Difference]: Without dead ends: 8846 [2024-10-12 21:43:31,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-10-12 21:43:31,162 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 1519 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:31,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1271 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:43:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2024-10-12 21:43:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 7195. [2024-10-12 21:43:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 5515 states have (on average 1.2892112420670898) internal successors, (7110), 5596 states have internal predecessors, (7110), 834 states have call successors, (834), 711 states have call predecessors, (834), 844 states have return successors, (1164), 890 states have call predecessors, (1164), 833 states have call successors, (1164) [2024-10-12 21:43:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 9108 transitions. [2024-10-12 21:43:31,829 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 9108 transitions. Word has length 68 [2024-10-12 21:43:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 7195 states and 9108 transitions. [2024-10-12 21:43:31,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:43:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 9108 transitions. [2024-10-12 21:43:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 21:43:31,831 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:31,832 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:31,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:43:32,032 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,SelfDestructingSolverStorable10 [2024-10-12 21:43:32,033 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:32,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash -697886660, now seen corresponding path program 2 times [2024-10-12 21:43:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643321850] [2024-10-12 21:43:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:32,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:32,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643321850] [2024-10-12 21:43:32,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643321850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:32,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:32,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572531248] [2024-10-12 21:43:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:32,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:32,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:32,091 INFO L87 Difference]: Start difference. First operand 7195 states and 9108 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:32,870 INFO L93 Difference]: Finished difference Result 8915 states and 11347 transitions. [2024-10-12 21:43:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 21:43:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-10-12 21:43:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:32,892 INFO L225 Difference]: With dead ends: 8915 [2024-10-12 21:43:32,893 INFO L226 Difference]: Without dead ends: 3639 [2024-10-12 21:43:32,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:43:32,905 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 783 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:32,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 593 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2024-10-12 21:43:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3187. [2024-10-12 21:43:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2439 states have (on average 1.2779827798277983) internal successors, (3117), 2473 states have internal predecessors, (3117), 376 states have call successors, (376), 313 states have call predecessors, (376), 370 states have return successors, (494), 403 states have call predecessors, (494), 375 states have call successors, (494) [2024-10-12 21:43:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 3987 transitions. [2024-10-12 21:43:33,227 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 3987 transitions. Word has length 71 [2024-10-12 21:43:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:33,228 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 3987 transitions. [2024-10-12 21:43:33,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 3987 transitions. [2024-10-12 21:43:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 21:43:33,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:33,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:33,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:43:33,231 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:33,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1103290916, now seen corresponding path program 1 times [2024-10-12 21:43:33,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:33,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364178255] [2024-10-12 21:43:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:43:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:43:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364178255] [2024-10-12 21:43:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364178255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:33,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211029092] [2024-10-12 21:43:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:33,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:33,347 INFO L87 Difference]: Start difference. First operand 3187 states and 3987 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:35,022 INFO L93 Difference]: Finished difference Result 9329 states and 11557 transitions. [2024-10-12 21:43:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:43:35,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-10-12 21:43:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:35,055 INFO L225 Difference]: With dead ends: 9329 [2024-10-12 21:43:35,055 INFO L226 Difference]: Without dead ends: 5795 [2024-10-12 21:43:35,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:43:35,067 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 1031 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:35,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 852 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2024-10-12 21:43:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5466. [2024-10-12 21:43:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 4114 states have (on average 1.2401555663587749) internal successors, (5102), 4196 states have internal predecessors, (5102), 656 states have call successors, (656), 553 states have call predecessors, (656), 694 states have return successors, (980), 719 states have call predecessors, (980), 655 states have call successors, (980) [2024-10-12 21:43:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 6738 transitions. [2024-10-12 21:43:35,622 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 6738 transitions. Word has length 76 [2024-10-12 21:43:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:35,623 INFO L471 AbstractCegarLoop]: Abstraction has 5466 states and 6738 transitions. [2024-10-12 21:43:35,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 6738 transitions. [2024-10-12 21:43:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:35,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:35,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:35,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:43:35,625 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:35,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1254542137, now seen corresponding path program 1 times [2024-10-12 21:43:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059295123] [2024-10-12 21:43:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:35,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059295123] [2024-10-12 21:43:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059295123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740810037] [2024-10-12 21:43:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:35,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:35,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:35,739 INFO L87 Difference]: Start difference. First operand 5466 states and 6738 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-12 21:43:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:37,306 INFO L93 Difference]: Finished difference Result 5873 states and 7392 transitions. [2024-10-12 21:43:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:37,325 INFO L225 Difference]: With dead ends: 5873 [2024-10-12 21:43:37,326 INFO L226 Difference]: Without dead ends: 5721 [2024-10-12 21:43:37,328 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 [2024-10-12 21:43:37,328 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 806 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:37,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 681 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:43:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2024-10-12 21:43:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5622. [2024-10-12 21:43:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 4250 states have (on average 1.251294117647059) internal successors, (5318), 4333 states have internal predecessors, (5318), 669 states have call successors, (669), 559 states have call predecessors, (669), 701 states have return successors, (996), 732 states have call predecessors, (996), 668 states have call successors, (996) [2024-10-12 21:43:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 6983 transitions. [2024-10-12 21:43:38,182 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 6983 transitions. Word has length 81 [2024-10-12 21:43:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:38,183 INFO L471 AbstractCegarLoop]: Abstraction has 5622 states and 6983 transitions. [2024-10-12 21:43:38,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-12 21:43:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 6983 transitions. [2024-10-12 21:43:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:38,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:38,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:38,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:43:38,186 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:38,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash -300601979, now seen corresponding path program 1 times [2024-10-12 21:43:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254615213] [2024-10-12 21:43:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:38,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254615213] [2024-10-12 21:43:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254615213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487428998] [2024-10-12 21:43:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:38,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:38,307 INFO L87 Difference]: Start difference. First operand 5622 states and 6983 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:40,645 INFO L93 Difference]: Finished difference Result 6238 states and 7966 transitions. [2024-10-12 21:43:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:43:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:40,666 INFO L225 Difference]: With dead ends: 6238 [2024-10-12 21:43:40,666 INFO L226 Difference]: Without dead ends: 5930 [2024-10-12 21:43:40,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:43:40,670 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 809 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:40,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1151 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 21:43:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2024-10-12 21:43:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 5767. [2024-10-12 21:43:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4375 states have (on average 1.2598857142857143) internal successors, (5512), 4459 states have internal predecessors, (5512), 682 states have call successors, (682), 565 states have call predecessors, (682), 708 states have return successors, (1011), 746 states have call predecessors, (1011), 681 states have call successors, (1011) [2024-10-12 21:43:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7205 transitions. [2024-10-12 21:43:41,427 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7205 transitions. Word has length 81 [2024-10-12 21:43:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:41,428 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 7205 transitions. [2024-10-12 21:43:41,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7205 transitions. [2024-10-12 21:43:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:41,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:41,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:41,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:43:41,431 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:41,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1516755705, now seen corresponding path program 1 times [2024-10-12 21:43:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:41,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548790877] [2024-10-12 21:43:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:41,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548790877] [2024-10-12 21:43:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548790877] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:41,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:41,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218507195] [2024-10-12 21:43:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:41,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:41,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:41,561 INFO L87 Difference]: Start difference. First operand 5767 states and 7205 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:43,615 INFO L93 Difference]: Finished difference Result 6772 states and 8804 transitions. [2024-10-12 21:43:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:43:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:43,634 INFO L225 Difference]: With dead ends: 6772 [2024-10-12 21:43:43,635 INFO L226 Difference]: Without dead ends: 6319 [2024-10-12 21:43:43,640 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 [2024-10-12 21:43:43,641 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 807 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:43,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1149 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:43:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2024-10-12 21:43:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 6058. [2024-10-12 21:43:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.275616083009079) internal successors, (5901), 4712 states have internal predecessors, (5901), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2024-10-12 21:43:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7654 transitions. [2024-10-12 21:43:44,610 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7654 transitions. Word has length 81 [2024-10-12 21:43:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:44,611 INFO L471 AbstractCegarLoop]: Abstraction has 6058 states and 7654 transitions. [2024-10-12 21:43:44,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7654 transitions. [2024-10-12 21:43:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:44,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:44,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:44,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:43:44,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:44,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:44,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2046244165, now seen corresponding path program 1 times [2024-10-12 21:43:44,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:44,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860055898] [2024-10-12 21:43:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:44,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:44,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860055898] [2024-10-12 21:43:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860055898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:44,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979515596] [2024-10-12 21:43:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:44,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:44,766 INFO L87 Difference]: Start difference. First operand 6058 states and 7654 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:46,406 INFO L93 Difference]: Finished difference Result 7053 states and 9246 transitions. [2024-10-12 21:43:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:43:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:46,424 INFO L225 Difference]: With dead ends: 7053 [2024-10-12 21:43:46,425 INFO L226 Difference]: Without dead ends: 6309 [2024-10-12 21:43:46,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:46,429 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 766 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:46,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 575 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2024-10-12 21:43:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 6058. [2024-10-12 21:43:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.2745352356247297) internal successors, (5896), 4712 states have internal predecessors, (5896), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2024-10-12 21:43:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7649 transitions. [2024-10-12 21:43:47,194 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7649 transitions. Word has length 81 [2024-10-12 21:43:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:47,195 INFO L471 AbstractCegarLoop]: Abstraction has 6058 states and 7649 transitions. [2024-10-12 21:43:47,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7649 transitions. [2024-10-12 21:43:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:47,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:47,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:47,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:43:47,198 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:47,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash 360064327, now seen corresponding path program 1 times [2024-10-12 21:43:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:47,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975376215] [2024-10-12 21:43:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975376215] [2024-10-12 21:43:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975376215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:47,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840338784] [2024-10-12 21:43:47,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:47,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:47,309 INFO L87 Difference]: Start difference. First operand 6058 states and 7649 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:48,765 INFO L93 Difference]: Finished difference Result 7047 states and 9220 transitions. [2024-10-12 21:43:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:43:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:48,790 INFO L225 Difference]: With dead ends: 7047 [2024-10-12 21:43:48,790 INFO L226 Difference]: Without dead ends: 6303 [2024-10-12 21:43:48,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:48,798 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 770 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:48,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 575 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:43:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2024-10-12 21:43:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6058. [2024-10-12 21:43:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.2734543882403804) internal successors, (5891), 4712 states have internal predecessors, (5891), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2024-10-12 21:43:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7644 transitions. [2024-10-12 21:43:49,728 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7644 transitions. Word has length 81 [2024-10-12 21:43:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:49,729 INFO L471 AbstractCegarLoop]: Abstraction has 6058 states and 7644 transitions. [2024-10-12 21:43:49,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7644 transitions. [2024-10-12 21:43:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:49,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:49,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:49,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:43:49,731 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:49,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 305671429, now seen corresponding path program 1 times [2024-10-12 21:43:49,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199315267] [2024-10-12 21:43:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:49,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:49,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199315267] [2024-10-12 21:43:49,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199315267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:49,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:49,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107329690] [2024-10-12 21:43:49,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:49,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:49,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:49,865 INFO L87 Difference]: Start difference. First operand 6058 states and 7644 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:52,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:52,184 INFO L93 Difference]: Finished difference Result 7960 states and 10619 transitions. [2024-10-12 21:43:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:43:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:52,209 INFO L225 Difference]: With dead ends: 7960 [2024-10-12 21:43:52,209 INFO L226 Difference]: Without dead ends: 7216 [2024-10-12 21:43:52,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:52,215 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 911 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:52,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1138 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:43:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2024-10-12 21:43:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 6626. [2024-10-12 21:43:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 5118 states have (on average 1.2983587338804221) internal successors, (6645), 5208 states have internal predecessors, (6645), 756 states have call successors, (756), 601 states have call predecessors, (756), 750 states have return successors, (1115), 826 states have call predecessors, (1115), 755 states have call successors, (1115) [2024-10-12 21:43:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8516 transitions. [2024-10-12 21:43:53,129 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8516 transitions. Word has length 81 [2024-10-12 21:43:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:53,129 INFO L471 AbstractCegarLoop]: Abstraction has 6626 states and 8516 transitions. [2024-10-12 21:43:53,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8516 transitions. [2024-10-12 21:43:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:53,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:53,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:53,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:43:53,133 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:53,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:53,133 INFO L85 PathProgramCache]: Analyzing trace with hash 984943683, now seen corresponding path program 1 times [2024-10-12 21:43:53,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:53,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495255899] [2024-10-12 21:43:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495255899] [2024-10-12 21:43:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495255899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:53,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472942892] [2024-10-12 21:43:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:53,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:53,246 INFO L87 Difference]: Start difference. First operand 6626 states and 8516 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:54,756 INFO L93 Difference]: Finished difference Result 8313 states and 11168 transitions. [2024-10-12 21:43:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:43:54,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:54,770 INFO L225 Difference]: With dead ends: 8313 [2024-10-12 21:43:54,770 INFO L226 Difference]: Without dead ends: 7001 [2024-10-12 21:43:54,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:54,774 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 654 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:54,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 694 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:43:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2024-10-12 21:43:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 6626. [2024-10-12 21:43:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 5118 states have (on average 1.2966002344665886) internal successors, (6636), 5208 states have internal predecessors, (6636), 756 states have call successors, (756), 601 states have call predecessors, (756), 750 states have return successors, (1115), 826 states have call predecessors, (1115), 755 states have call successors, (1115) [2024-10-12 21:43:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8507 transitions. [2024-10-12 21:43:55,643 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8507 transitions. Word has length 81 [2024-10-12 21:43:55,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:55,643 INFO L471 AbstractCegarLoop]: Abstraction has 6626 states and 8507 transitions. [2024-10-12 21:43:55,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8507 transitions. [2024-10-12 21:43:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:55,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:55,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:55,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:43:55,646 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:55,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1348448955, now seen corresponding path program 1 times [2024-10-12 21:43:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360416055] [2024-10-12 21:43:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360416055] [2024-10-12 21:43:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360416055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060840613] [2024-10-12 21:43:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:55,773 INFO L87 Difference]: Start difference. First operand 6626 states and 8507 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:57,836 INFO L93 Difference]: Finished difference Result 9916 states and 13605 transitions. [2024-10-12 21:43:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:43:57,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:43:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:57,860 INFO L225 Difference]: With dead ends: 9916 [2024-10-12 21:43:57,860 INFO L226 Difference]: Without dead ends: 8604 [2024-10-12 21:43:57,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:57,867 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 875 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:57,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 847 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:43:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8604 states. [2024-10-12 21:43:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8604 to 7784. [2024-10-12 21:43:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 6128 states have (on average 1.33355091383812) internal successors, (8172), 6226 states have internal predecessors, (8172), 848 states have call successors, (848), 649 states have call predecessors, (848), 806 states have return successors, (1269), 926 states have call predecessors, (1269), 847 states have call successors, (1269) [2024-10-12 21:43:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 10289 transitions. [2024-10-12 21:43:59,016 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 10289 transitions. Word has length 81 [2024-10-12 21:43:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:59,016 INFO L471 AbstractCegarLoop]: Abstraction has 7784 states and 10289 transitions. [2024-10-12 21:43:59,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:43:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 10289 transitions. [2024-10-12 21:43:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:43:59,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:59,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:59,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:43:59,020 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:59,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1146625021, now seen corresponding path program 1 times [2024-10-12 21:43:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:59,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340313287] [2024-10-12 21:43:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:59,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:43:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:43:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:43:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:43:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340313287] [2024-10-12 21:43:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340313287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:59,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387551993] [2024-10-12 21:43:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:59,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:59,142 INFO L87 Difference]: Start difference. First operand 7784 states and 10289 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:44:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:01,412 INFO L93 Difference]: Finished difference Result 13872 states and 19745 transitions. [2024-10-12 21:44:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:44:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:01,451 INFO L225 Difference]: With dead ends: 13872 [2024-10-12 21:44:01,451 INFO L226 Difference]: Without dead ends: 11402 [2024-10-12 21:44:01,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:01,468 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 795 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:01,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1142 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11402 states. [2024-10-12 21:44:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11402 to 10097. [2024-10-12 21:44:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10097 states, 8153 states have (on average 1.3803507911198332) internal successors, (11254), 8267 states have internal predecessors, (11254), 1024 states have call successors, (1024), 745 states have call predecessors, (1024), 918 states have return successors, (1623), 1118 states have call predecessors, (1623), 1023 states have call successors, (1623) [2024-10-12 21:44:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10097 states to 10097 states and 13901 transitions. [2024-10-12 21:44:02,614 INFO L78 Accepts]: Start accepts. Automaton has 10097 states and 13901 transitions. Word has length 81 [2024-10-12 21:44:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:02,614 INFO L471 AbstractCegarLoop]: Abstraction has 10097 states and 13901 transitions. [2024-10-12 21:44:02,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:44:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10097 states and 13901 transitions. [2024-10-12 21:44:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:44:02,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:02,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:02,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:44:02,620 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:02,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -585925243, now seen corresponding path program 1 times [2024-10-12 21:44:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122976314] [2024-10-12 21:44:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:44:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:44:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:44:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:44:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:02,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122976314] [2024-10-12 21:44:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122976314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:02,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:02,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650069208] [2024-10-12 21:44:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:02,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:02,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:02,721 INFO L87 Difference]: Start difference. First operand 10097 states and 13901 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-12 21:44:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:04,451 INFO L93 Difference]: Finished difference Result 16008 states and 23213 transitions. [2024-10-12 21:44:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-10-12 21:44:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:04,492 INFO L225 Difference]: With dead ends: 16008 [2024-10-12 21:44:04,492 INFO L226 Difference]: Without dead ends: 11226 [2024-10-12 21:44:04,509 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 [2024-10-12 21:44:04,510 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 297 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:04,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 795 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:44:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11226 states. [2024-10-12 21:44:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11226 to 10163. [2024-10-12 21:44:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10163 states, 8219 states have (on average 1.3772965080910087) internal successors, (11320), 8333 states have internal predecessors, (11320), 1024 states have call successors, (1024), 745 states have call predecessors, (1024), 918 states have return successors, (1623), 1118 states have call predecessors, (1623), 1023 states have call successors, (1623) [2024-10-12 21:44:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 13967 transitions. [2024-10-12 21:44:05,683 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 13967 transitions. Word has length 81 [2024-10-12 21:44:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:05,684 INFO L471 AbstractCegarLoop]: Abstraction has 10163 states and 13967 transitions. [2024-10-12 21:44:05,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-12 21:44:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 13967 transitions. [2024-10-12 21:44:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 21:44:05,689 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:05,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:05,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 21:44:05,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:05,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1680455943, now seen corresponding path program 1 times [2024-10-12 21:44:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818206651] [2024-10-12 21:44:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:44:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:44:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:44:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:44:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818206651] [2024-10-12 21:44:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818206651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121669912] [2024-10-12 21:44:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:05,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:05,811 INFO L87 Difference]: Start difference. First operand 10163 states and 13967 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:44:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:09,259 INFO L93 Difference]: Finished difference Result 27198 states and 41033 transitions. [2024-10-12 21:44:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 21:44:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-12 21:44:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:09,339 INFO L225 Difference]: With dead ends: 27198 [2024-10-12 21:44:09,340 INFO L226 Difference]: Without dead ends: 22350 [2024-10-12 21:44:09,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:44:09,360 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1883 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:09,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 965 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 21:44:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22350 states. [2024-10-12 21:44:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22350 to 19436. [2024-10-12 21:44:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19436 states, 16282 states have (on average 1.4373541333988453) internal successors, (23403), 16511 states have internal predecessors, (23403), 1768 states have call successors, (1768), 1147 states have call predecessors, (1768), 1384 states have return successors, (3070), 1811 states have call predecessors, (3070), 1767 states have call successors, (3070) [2024-10-12 21:44:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 28241 transitions. [2024-10-12 21:44:11,573 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 28241 transitions. Word has length 81 [2024-10-12 21:44:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:11,573 INFO L471 AbstractCegarLoop]: Abstraction has 19436 states and 28241 transitions. [2024-10-12 21:44:11,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-12 21:44:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 28241 transitions. [2024-10-12 21:44:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:44:11,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:11,578 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:11,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 21:44:11,579 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:11,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash 420435187, now seen corresponding path program 1 times [2024-10-12 21:44:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493552427] [2024-10-12 21:44:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:44:11,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493552427] [2024-10-12 21:44:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493552427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:11,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:11,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47814393] [2024-10-12 21:44:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:11,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:11,696 INFO L87 Difference]: Start difference. First operand 19436 states and 28241 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:14,263 INFO L93 Difference]: Finished difference Result 23536 states and 33224 transitions. [2024-10-12 21:44:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 21:44:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-10-12 21:44:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:14,313 INFO L225 Difference]: With dead ends: 23536 [2024-10-12 21:44:14,313 INFO L226 Difference]: Without dead ends: 19089 [2024-10-12 21:44:14,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:44:14,334 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 1506 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:14,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 900 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19089 states. [2024-10-12 21:44:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19089 to 18738. [2024-10-12 21:44:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18738 states, 15749 states have (on average 1.4407898914216775) internal successors, (22691), 15973 states have internal predecessors, (22691), 1679 states have call successors, (1679), 1070 states have call predecessors, (1679), 1308 states have return successors, (2889), 1728 states have call predecessors, (2889), 1678 states have call successors, (2889) [2024-10-12 21:44:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 27259 transitions. [2024-10-12 21:44:16,216 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 27259 transitions. Word has length 86 [2024-10-12 21:44:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:16,216 INFO L471 AbstractCegarLoop]: Abstraction has 18738 states and 27259 transitions. [2024-10-12 21:44:16,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 27259 transitions. [2024-10-12 21:44:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 21:44:16,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:16,237 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:16,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 21:44:16,237 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:16,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash 786663259, now seen corresponding path program 1 times [2024-10-12 21:44:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:16,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011012561] [2024-10-12 21:44:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 21:44:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 21:44:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-12 21:44:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 21:44:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-12 21:44:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-12 21:44:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 21:44:16,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011012561] [2024-10-12 21:44:16,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011012561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:16,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850094238] [2024-10-12 21:44:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:16,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:16,372 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) [2024-10-12 21:44:16,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:44:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:44:16,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 21:44:16,521 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:16,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850094238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:16,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:16,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-10-12 21:44:16,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166352963] [2024-10-12 21:44:16,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:16,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:16,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:16,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:16,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:16,523 INFO L87 Difference]: Start difference. First operand 18738 states and 27259 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-12 21:44:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:17,924 INFO L93 Difference]: Finished difference Result 20645 states and 29560 transitions. [2024-10-12 21:44:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:44:17,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-10-12 21:44:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:17,971 INFO L225 Difference]: With dead ends: 20645 [2024-10-12 21:44:17,971 INFO L226 Difference]: Without dead ends: 16053 [2024-10-12 21:44:17,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:17,984 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 0 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:17,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1688 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:44:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16053 states. [2024-10-12 21:44:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16053 to 16009. [2024-10-12 21:44:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16009 states, 13764 states have (on average 1.4728276663760536) internal successors, (20272), 13931 states have internal predecessors, (20272), 1330 states have call successors, (1330), 765 states have call predecessors, (1330), 913 states have return successors, (2390), 1344 states have call predecessors, (2390), 1329 states have call successors, (2390) [2024-10-12 21:44:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16009 states to 16009 states and 23992 transitions. [2024-10-12 21:44:19,537 INFO L78 Accepts]: Start accepts. Automaton has 16009 states and 23992 transitions. Word has length 131 [2024-10-12 21:44:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:19,537 INFO L471 AbstractCegarLoop]: Abstraction has 16009 states and 23992 transitions. [2024-10-12 21:44:19,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-12 21:44:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 16009 states and 23992 transitions. [2024-10-12 21:44:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-12 21:44:19,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:19,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:19,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:44:19,765 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,SelfDestructingSolverStorable25 [2024-10-12 21:44:19,765 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:19,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash 705688633, now seen corresponding path program 1 times [2024-10-12 21:44:19,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:19,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585965502] [2024-10-12 21:44:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:19,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 21:44:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-12 21:44:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-12 21:44:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-12 21:44:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 21:44:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:44:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585965502] [2024-10-12 21:44:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585965502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:19,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:19,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:19,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99320382] [2024-10-12 21:44:19,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:19,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:19,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:19,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:19,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:19,835 INFO L87 Difference]: Start difference. First operand 16009 states and 23992 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:44:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:21,398 INFO L93 Difference]: Finished difference Result 16061 states and 24046 transitions. [2024-10-12 21:44:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2024-10-12 21:44:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:21,441 INFO L225 Difference]: With dead ends: 16061 [2024-10-12 21:44:21,442 INFO L226 Difference]: Without dead ends: 15446 [2024-10-12 21:44:21,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:21,451 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 402 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:21,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 734 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:44:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2024-10-12 21:44:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 15397. [2024-10-12 21:44:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15397 states, 13301 states have (on average 1.4820690173671152) internal successors, (19713), 13463 states have internal predecessors, (19713), 1258 states have call successors, (1258), 705 states have call predecessors, (1258), 836 states have return successors, (2287), 1260 states have call predecessors, (2287), 1257 states have call successors, (2287) [2024-10-12 21:44:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 23258 transitions. [2024-10-12 21:44:22,707 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 23258 transitions. Word has length 133 [2024-10-12 21:44:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:22,707 INFO L471 AbstractCegarLoop]: Abstraction has 15397 states and 23258 transitions. [2024-10-12 21:44:22,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:44:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 23258 transitions. [2024-10-12 21:44:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 21:44:22,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:22,725 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, 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] [2024-10-12 21:44:22,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:44:22,725 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:22,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash -458440807, now seen corresponding path program 1 times [2024-10-12 21:44:22,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:22,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643630581] [2024-10-12 21:44:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 21:44:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 21:44:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 21:44:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 21:44:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:44:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:44:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-12 21:44:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:44:22,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:22,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643630581] [2024-10-12 21:44:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643630581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:22,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133430847] [2024-10-12 21:44:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:22,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:22,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:22,831 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) [2024-10-12 21:44:22,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:44:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:44:22,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 21:44:23,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133430847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:23,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:23,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:44:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115885065] [2024-10-12 21:44:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:23,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:44:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:44:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:23,026 INFO L87 Difference]: Start difference. First operand 15397 states and 23258 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-10-12 21:44:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:25,147 INFO L93 Difference]: Finished difference Result 43334 states and 66957 transitions. [2024-10-12 21:44:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:44:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 131 [2024-10-12 21:44:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:25,230 INFO L225 Difference]: With dead ends: 43334 [2024-10-12 21:44:25,230 INFO L226 Difference]: Without dead ends: 29213 [2024-10-12 21:44:25,265 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 [2024-10-12 21:44:25,266 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 317 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:25,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:44:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29213 states.