./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.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 76648bc32cf18f500eee0df5c8487c6c0f67ad1050d870973d578953c78cde5c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:13:16,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:13:16,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:13:16,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:13:16,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:13:16,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:13:16,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:13:16,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:13:16,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:13:16,476 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:13:16,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:13:16,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:13:16,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:13:16,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:13:16,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:13:16,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:13:16,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:13:16,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:13:16,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:13:16,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:13:16,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:13:16,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:13:16,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:13:16,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:13:16,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:13:16,483 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:13:16,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:13:16,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:13:16,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:13:16,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:13:16,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:13:16,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:16,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:13:16,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:13:16,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:13:16,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:13:16,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:13:16,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76648bc32cf18f500eee0df5c8487c6c0f67ad1050d870973d578953c78cde5c [2024-11-22 02:13:16,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:13:16,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:13:16,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:13:16,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:13:16,711 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:13:16,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2024-11-22 02:13:17,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:13:18,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:13:18,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2024-11-22 02:13:18,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2146e2168/9e16db74f82240e18ebd9ab41c14fb82/FLAG5e8002310 [2024-11-22 02:13:18,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2146e2168/9e16db74f82240e18ebd9ab41c14fb82 [2024-11-22 02:13:18,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:13:18,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:13:18,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:18,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:13:18,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:13:18,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acdb9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18, skipping insertion in model container [2024-11-22 02:13:18,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:13:18,688 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2024-11-22 02:13:18,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:18,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:13:18,717 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2024-11-22 02:13:18,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:13:18,732 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:13:18,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18 WrapperNode [2024-11-22 02:13:18,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:13:18,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:18,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:13:18,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:13:18,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,761 INFO L138 Inliner]: procedures = 15, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 89 [2024-11-22 02:13:18,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:13:18,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:13:18,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:13:18,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:13:18,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,793 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 6, 6, 6, 6]. 23 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 1, 1]. The 8 writes are split as follows [0, 2, 2, 2, 2]. [2024-11-22 02:13:18,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:13:18,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:13:18,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:13:18,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:13:18,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (1/1) ... [2024-11-22 02:13:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:13:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:18,855 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) [2024-11-22 02:13:18,857 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 [2024-11-22 02:13:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:13:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_28_0 [2024-11-22 02:13:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_28_0 [2024-11-22 02:13:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 02:13:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 02:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 02:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 02:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 02:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2024-11-22 02:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2024-11-22 02:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_28_0 [2024-11-22 02:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_28_0 [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:13:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 02:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 02:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2024-11-22 02:13:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2024-11-22 02:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 02:13:18,980 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:13:18,982 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:13:19,148 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-22 02:13:19,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:13:19,160 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:13:19,160 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 02:13:19,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:19 BoogieIcfgContainer [2024-11-22 02:13:19,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:13:19,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:13:19,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:13:19,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:13:19,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:13:18" (1/3) ... [2024-11-22 02:13:19,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143ef0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:19, skipping insertion in model container [2024-11-22 02:13:19,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:18" (2/3) ... [2024-11-22 02:13:19,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143ef0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:19, skipping insertion in model container [2024-11-22 02:13:19,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:19" (3/3) ... [2024-11-22 02:13:19,169 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_6.c [2024-11-22 02:13:19,183 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:13:19,184 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:13:19,236 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:13:19,245 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;@20816a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:13:19,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:13:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 34 states have (on average 1.411764705882353) internal successors, (48), 39 states have internal predecessors, (48), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:13:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 02:13:19,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:19,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:19,257 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:19,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 338510164, now seen corresponding path program 1 times [2024-11-22 02:13:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919812036] [2024-11-22 02:13:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919812036] [2024-11-22 02:13:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919812036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:19,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:19,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:13:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048623110] [2024-11-22 02:13:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:19,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:13:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:13:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:13:19,562 INFO L87 Difference]: Start difference. First operand has 48 states, 34 states have (on average 1.411764705882353) internal successors, (48), 39 states have internal predecessors, (48), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:13:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:19,604 INFO L93 Difference]: Finished difference Result 99 states and 136 transitions. [2024-11-22 02:13:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:13:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 02:13:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:19,612 INFO L225 Difference]: With dead ends: 99 [2024-11-22 02:13:19,612 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 02:13:19,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:13:19,619 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:19,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 02:13:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-22 02:13:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:13:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-22 02:13:19,669 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 13 [2024-11-22 02:13:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:19,669 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-22 02:13:19,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:13:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-22 02:13:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 02:13:19,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:19,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:19,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:13:19,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:19,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash -181604312, now seen corresponding path program 1 times [2024-11-22 02:13:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267244110] [2024-11-22 02:13:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:19,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267244110] [2024-11-22 02:13:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267244110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:19,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:13:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:13:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148866850] [2024-11-22 02:13:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:19,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:13:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:13:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:13:19,784 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:13:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:19,809 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2024-11-22 02:13:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:13:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-22 02:13:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:19,811 INFO L225 Difference]: With dead ends: 90 [2024-11-22 02:13:19,811 INFO L226 Difference]: Without dead ends: 48 [2024-11-22 02:13:19,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:13:19,813 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:19,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-22 02:13:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-22 02:13:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.303030303030303) internal successors, (43), 37 states have internal predecessors, (43), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:13:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-11-22 02:13:19,826 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 16 [2024-11-22 02:13:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:19,826 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-11-22 02:13:19,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:13:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-11-22 02:13:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:13:19,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:19,827 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] [2024-11-22 02:13:19,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:13:19,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:19,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash 713629656, now seen corresponding path program 1 times [2024-11-22 02:13:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958167958] [2024-11-22 02:13:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958167958] [2024-11-22 02:13:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958167958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569505421] [2024-11-22 02:13:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:19,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:19,939 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) [2024-11-22 02:13:19,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:13:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:20,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 02:13:20,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:13:20,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 02:13:20,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569505421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:13:20,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 02:13:20,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 02:13:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824594850] [2024-11-22 02:13:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:13:20,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:13:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:20,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:13:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:20,087 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:20,109 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-22 02:13:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:13:20,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-22 02:13:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:20,111 INFO L225 Difference]: With dead ends: 52 [2024-11-22 02:13:20,111 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 02:13:20,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:13:20,113 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:20,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 156 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 02:13:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-22 02:13:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 39 states have internal predecessors, (45), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:13:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2024-11-22 02:13:20,121 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 23 [2024-11-22 02:13:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:20,121 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2024-11-22 02:13:20,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:13:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2024-11-22 02:13:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:13:20,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:20,123 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] [2024-11-22 02:13:20,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:13:20,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:20,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:20,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash 713631578, now seen corresponding path program 1 times [2024-11-22 02:13:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000467689] [2024-11-22 02:13:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:20,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000467689] [2024-11-22 02:13:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000467689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68775305] [2024-11-22 02:13:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:20,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:20,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:20,391 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) [2024-11-22 02:13:20,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:13:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:20,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 02:13:20,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:20,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:13:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68775305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:20,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 02:13:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18334423] [2024-11-22 02:13:20,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:20,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:13:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:20,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:13:20,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:20,526 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:13:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:20,570 INFO L93 Difference]: Finished difference Result 102 states and 134 transitions. [2024-11-22 02:13:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:13:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2024-11-22 02:13:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:20,572 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:13:20,572 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 02:13:20,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:13:20,573 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:20,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 105 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:13:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 02:13:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-22 02:13:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 02:13:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2024-11-22 02:13:20,584 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 23 [2024-11-22 02:13:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:20,585 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2024-11-22 02:13:20,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:13:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2024-11-22 02:13:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 02:13:20,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:20,587 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:20,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:20,791 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,SelfDestructingSolverStorable3 [2024-11-22 02:13:20,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:20,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash -255366230, now seen corresponding path program 2 times [2024-11-22 02:13:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935094703] [2024-11-22 02:13:20,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:20,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:20,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-22 02:13:21,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935094703] [2024-11-22 02:13:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935094703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037529929] [2024-11-22 02:13:21,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:21,052 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) [2024-11-22 02:13:21,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:13:21,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:21,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:13:21,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:13:21,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 02:13:21,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 02:13:21,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037529929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:21,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:21,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:13:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953689174] [2024-11-22 02:13:21,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:21,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:13:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:13:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:13:21,305 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 02:13:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:21,581 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2024-11-22 02:13:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:13:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 44 [2024-11-22 02:13:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:21,584 INFO L225 Difference]: With dead ends: 119 [2024-11-22 02:13:21,584 INFO L226 Difference]: Without dead ends: 65 [2024-11-22 02:13:21,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:13:21,585 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:21,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 145 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-22 02:13:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-22 02:13:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 50 states have internal predecessors, (56), 13 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-22 02:13:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2024-11-22 02:13:21,594 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 44 [2024-11-22 02:13:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:21,595 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-22 02:13:21,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 02:13:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2024-11-22 02:13:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 02:13:21,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:21,597 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:21,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:21,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:21,798 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:21,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2077730892, now seen corresponding path program 1 times [2024-11-22 02:13:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:21,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931743622] [2024-11-22 02:13:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 14 proven. 55 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-22 02:13:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931743622] [2024-11-22 02:13:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931743622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738721679] [2024-11-22 02:13:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:22,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:22,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:22,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:13:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:22,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 02:13:22,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-22 02:13:22,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-22 02:13:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738721679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:22,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:22,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-22 02:13:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281100459] [2024-11-22 02:13:22,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:22,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:13:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:13:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:13:22,572 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:13:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:22,735 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2024-11-22 02:13:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:13:22,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 124 [2024-11-22 02:13:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:22,737 INFO L225 Difference]: With dead ends: 192 [2024-11-22 02:13:22,737 INFO L226 Difference]: Without dead ends: 130 [2024-11-22 02:13:22,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:13:22,738 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:22,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 171 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-22 02:13:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-22 02:13:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 92 states have (on average 1.141304347826087) internal successors, (105), 96 states have internal predecessors, (105), 31 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (33), 31 states have call predecessors, (33), 31 states have call successors, (33) [2024-11-22 02:13:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-11-22 02:13:22,754 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 124 [2024-11-22 02:13:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:22,755 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-11-22 02:13:22,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:13:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-11-22 02:13:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2024-11-22 02:13:22,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:22,767 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:22,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:13:22,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:22,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:22,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 658392534, now seen corresponding path program 1 times [2024-11-22 02:13:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128828051] [2024-11-22 02:13:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12730 backedges. 58 proven. 391 refuted. 0 times theorem prover too weak. 12281 trivial. 0 not checked. [2024-11-22 02:13:24,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128828051] [2024-11-22 02:13:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128828051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798535276] [2024-11-22 02:13:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:24,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:24,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:24,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:13:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:25,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 5108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:13:25,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12730 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 11988 trivial. 0 not checked. [2024-11-22 02:13:25,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12730 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 11988 trivial. 0 not checked. [2024-11-22 02:13:26,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798535276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:26,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:13:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139746347] [2024-11-22 02:13:26,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:26,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:13:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:13:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:13:26,437 INFO L87 Difference]: Start difference. First operand 130 states and 169 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-22 02:13:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:26,589 INFO L93 Difference]: Finished difference Result 299 states and 432 transitions. [2024-11-22 02:13:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:13:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) Word has length 721 [2024-11-22 02:13:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:26,591 INFO L225 Difference]: With dead ends: 299 [2024-11-22 02:13:26,591 INFO L226 Difference]: Without dead ends: 174 [2024-11-22 02:13:26,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1447 GetRequests, 1432 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:13:26,592 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 18 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:26,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 280 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-22 02:13:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-22 02:13:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 127 states have internal predecessors, (138), 43 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-22 02:13:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2024-11-22 02:13:26,611 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 721 [2024-11-22 02:13:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:26,612 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2024-11-22 02:13:26,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-22 02:13:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2024-11-22 02:13:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1472 [2024-11-22 02:13:26,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:26,657 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:26,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:13:26,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:26,858 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:26,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1609704042, now seen corresponding path program 1 times [2024-11-22 02:13:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:26,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474869786] [2024-11-22 02:13:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41019 backedges. 88 proven. 805 refuted. 0 times theorem prover too weak. 40126 trivial. 0 not checked. [2024-11-22 02:13:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474869786] [2024-11-22 02:13:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474869786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998774383] [2024-11-22 02:13:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:29,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:29,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:13:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:30,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 9344 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 02:13:30,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:30,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 41019 backedges. 12853 proven. 3 refuted. 0 times theorem prover too weak. 28163 trivial. 0 not checked. [2024-11-22 02:13:30,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 41019 backedges. 828 proven. 758 refuted. 0 times theorem prover too weak. 39433 trivial. 0 not checked. [2024-11-22 02:13:32,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998774383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:32,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 21 [2024-11-22 02:13:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572784618] [2024-11-22 02:13:32,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:32,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:13:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:13:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:13:32,697 INFO L87 Difference]: Start difference. First operand 174 states and 227 transitions. Second operand has 21 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 9 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (28), 6 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-22 02:13:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:32,991 INFO L93 Difference]: Finished difference Result 347 states and 495 transitions. [2024-11-22 02:13:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:13:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 9 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (28), 6 states have call predecessors, (28), 9 states have call successors, (28) Word has length 1471 [2024-11-22 02:13:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:32,994 INFO L225 Difference]: With dead ends: 347 [2024-11-22 02:13:32,994 INFO L226 Difference]: Without dead ends: 178 [2024-11-22 02:13:32,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2956 GetRequests, 2928 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-22 02:13:32,996 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:32,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 385 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:13:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-22 02:13:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-22 02:13:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 125 states have (on average 1.12) internal successors, (140), 129 states have internal predecessors, (140), 43 states have call successors, (43), 4 states have call predecessors, (43), 9 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-22 02:13:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 231 transitions. [2024-11-22 02:13:33,012 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 231 transitions. Word has length 1471 [2024-11-22 02:13:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:33,013 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 231 transitions. [2024-11-22 02:13:33,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 9 states have call successors, (25), 6 states have call predecessors, (25), 7 states have return successors, (28), 6 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-22 02:13:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 231 transitions. [2024-11-22 02:13:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2624 [2024-11-22 02:13:33,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:33,041 INFO L215 NwaCegarLoop]: trace histogram [144, 144, 144, 144, 108, 108, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:33,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:13:33,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:33,241 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:33,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 515049110, now seen corresponding path program 1 times [2024-11-22 02:13:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227772941] [2024-11-22 02:13:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 137643 backedges. 279 proven. 2111 refuted. 0 times theorem prover too weak. 135253 trivial. 0 not checked. [2024-11-22 02:13:41,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:13:41,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227772941] [2024-11-22 02:13:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227772941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:13:41,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418141967] [2024-11-22 02:13:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:13:41,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:13:41,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:13:41,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:13:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:13:44,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 14888 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 02:13:44,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:13:44,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:13:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 137643 backedges. 51586 proven. 3 refuted. 0 times theorem prover too weak. 86054 trivial. 0 not checked. [2024-11-22 02:13:44,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:13:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 137643 backedges. 2323 proven. 474 refuted. 0 times theorem prover too weak. 134846 trivial. 0 not checked. [2024-11-22 02:13:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418141967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:13:48,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:13:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2024-11-22 02:13:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826239472] [2024-11-22 02:13:48,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:13:48,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 02:13:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:13:48,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 02:13:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:13:48,337 INFO L87 Difference]: Start difference. First operand 178 states and 231 transitions. Second operand has 21 states, 16 states have (on average 5.1875) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-22 02:13:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:13:48,552 INFO L93 Difference]: Finished difference Result 355 states and 502 transitions. [2024-11-22 02:13:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:13:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 5.1875) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) Word has length 2623 [2024-11-22 02:13:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:13:48,554 INFO L225 Difference]: With dead ends: 355 [2024-11-22 02:13:48,554 INFO L226 Difference]: Without dead ends: 182 [2024-11-22 02:13:48,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5259 GetRequests, 5235 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:13:48,557 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:13:48,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 386 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:13:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-22 02:13:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-22 02:13:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 127 states have (on average 1.1181102362204725) internal successors, (142), 131 states have internal predecessors, (142), 43 states have call successors, (43), 4 states have call predecessors, (43), 11 states have return successors, (50), 46 states have call predecessors, (50), 43 states have call successors, (50) [2024-11-22 02:13:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 235 transitions. [2024-11-22 02:13:48,572 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 235 transitions. Word has length 2623 [2024-11-22 02:13:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:13:48,572 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 235 transitions. [2024-11-22 02:13:48,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 5.1875) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-22 02:13:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 235 transitions. [2024-11-22 02:13:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4928 [2024-11-22 02:13:48,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:13:48,655 INFO L215 NwaCegarLoop]: trace histogram [432, 432, 288, 288, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 108, 108, 72, 72, 72, 72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:13:48,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 02:13:48,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:13:48,856 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:13:48,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:13:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash 205145750, now seen corresponding path program 2 times [2024-11-22 02:13:48,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:13:48,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126312032] [2024-11-22 02:13:48,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:13:48,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:13:49,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:13:49,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 675627 backedges. 445 proven. 611 refuted. 0 times theorem prover too weak. 674571 trivial. 0 not checked. [2024-11-22 02:14:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:14:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126312032] [2024-11-22 02:14:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126312032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:14:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354701495] [2024-11-22 02:14:14,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:14:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:14:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:14:14,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:14:14,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:14:17,745 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:14:17,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:17,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 24536 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 02:14:17,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:14:17,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 02:14:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 675627 backedges. 4988 proven. 3 refuted. 0 times theorem prover too weak. 670636 trivial. 0 not checked. [2024-11-22 02:14:18,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:14:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 675627 backedges. 94 proven. 5434 refuted. 0 times theorem prover too weak. 670099 trivial. 0 not checked. [2024-11-22 02:14:27,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354701495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:14:27,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:14:27,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 10] total 28 [2024-11-22 02:14:27,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037949218] [2024-11-22 02:14:27,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:14:27,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:14:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:14:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:14:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:14:27,177 INFO L87 Difference]: Start difference. First operand 182 states and 235 transitions. Second operand has 28 states, 22 states have (on average 4.045454545454546) internal successors, (89), 24 states have internal predecessors, (89), 12 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (33), 6 states have call predecessors, (33), 12 states have call successors, (33) [2024-11-22 02:14:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:14:27,750 INFO L93 Difference]: Finished difference Result 366 states and 551 transitions. [2024-11-22 02:14:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 02:14:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 4.045454545454546) internal successors, (89), 24 states have internal predecessors, (89), 12 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (33), 6 states have call predecessors, (33), 12 states have call successors, (33) Word has length 4927 [2024-11-22 02:14:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:14:27,753 INFO L225 Difference]: With dead ends: 366 [2024-11-22 02:14:27,753 INFO L226 Difference]: Without dead ends: 189 [2024-11-22 02:14:27,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9879 GetRequests, 9836 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1742, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 02:14:27,757 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 68 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:14:27,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 374 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:14:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-22 02:14:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2024-11-22 02:14:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 133 states have internal predecessors, (144), 43 states have call successors, (43), 4 states have call predecessors, (43), 13 states have return successors, (52), 48 states have call predecessors, (52), 43 states have call successors, (52) [2024-11-22 02:14:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 239 transitions. [2024-11-22 02:14:27,777 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 239 transitions. Word has length 4927 [2024-11-22 02:14:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:14:27,779 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 239 transitions. [2024-11-22 02:14:27,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 4.045454545454546) internal successors, (89), 24 states have internal predecessors, (89), 12 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (33), 6 states have call predecessors, (33), 12 states have call successors, (33) [2024-11-22 02:14:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 239 transitions. [2024-11-22 02:14:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11732 [2024-11-22 02:14:28,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:14:28,447 INFO L215 NwaCegarLoop]: trace histogram [1296, 1296, 864, 864, 864, 576, 576, 432, 432, 432, 432, 432, 432, 432, 216, 216, 144, 144, 144, 144, 144, 144, 144, 108, 108, 72, 72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:14:28,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:14:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:14:28,648 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:14:28,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:14:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 661338198, now seen corresponding path program 3 times [2024-11-22 02:14:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:14:28,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446844212] [2024-11-22 02:14:28,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:14:28,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:14:29,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 02:14:29,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4827849 backedges. 1805 proven. 9 refuted. 0 times theorem prover too weak. 4826035 trivial. 0 not checked. [2024-11-22 02:14:30,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:14:30,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446844212] [2024-11-22 02:14:30,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446844212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:14:30,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370939648] [2024-11-22 02:14:30,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:14:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:14:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:14:30,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:14:30,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:14:33,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 02:14:33,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:14:33,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 02:14:33,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:14:34,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 02:14:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4827849 backedges. 1802 proven. 8 refuted. 0 times theorem prover too weak. 4826039 trivial. 0 not checked. [2024-11-22 02:14:34,264 INFO L311 TraceCheckSpWp]: Computing backward predicates...