./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:59:50,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:59:50,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:59:50,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:59:50,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:59:50,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:59:50,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:59:50,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:59:50,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:59:50,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:59:50,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:59:50,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:59:50,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:59:50,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:59:50,930 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:59:50,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:59:50,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:59:50,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:59:50,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:59:50,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:59:50,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:59:50,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:59:50,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:59:50,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:59:50,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:59:50,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:59:50,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:59:50,935 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:59:50,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:59:50,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:59:50,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:59:50,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:59:50,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:59:50,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:59:50,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:59:50,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:59:50,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:59:50,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:59:50,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:59:50,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:59:50,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:59:50,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:59:50,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2024-10-24 14:59:51,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:59:51,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:59:51,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:59:51,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:59:51,285 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:59:51,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-24 14:59:52,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:59:53,005 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:59:53,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2024-10-24 14:59:53,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c74fda4d/02982fb4ec62401ba7bd8b8aa95bff7b/FLAG70c6a8c34 [2024-10-24 14:59:53,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c74fda4d/02982fb4ec62401ba7bd8b8aa95bff7b [2024-10-24 14:59:53,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:59:53,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:59:53,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:59:53,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:59:53,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:59:53,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5408586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53, skipping insertion in model container [2024-10-24 14:59:53,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:59:53,515 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2024-10-24 14:59:53,631 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2024-10-24 14:59:53,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:59:53,648 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:59:53,684 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2024-10-24 14:59:53,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2024-10-24 14:59:53,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:59:53,784 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:59:53,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53 WrapperNode [2024-10-24 14:59:53,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:59:53,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:59:53,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:59:53,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:59:53,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,906 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-24 14:59:53,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:59:53,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:59:53,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:59:53,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:59:53,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:53,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,050 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-10-24 14:59:54,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:59:54,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:59:54,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:59:54,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:59:54,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (1/1) ... [2024-10-24 14:59:54,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:59:54,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:59:54,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:59:54,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:59:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:59:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:59:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:59:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:59:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:59:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:59:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:59:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:59:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:59:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-24 14:59:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-24 14:59:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:59:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:59:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:59:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:59:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:59:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:59:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:59:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:59:54,521 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:59:54,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:59:56,031 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-10-24 14:59:56,032 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:59:56,103 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:59:56,103 INFO L314 CfgBuilder]: Removed 62 assume(true) statements. [2024-10-24 14:59:56,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:56 BoogieIcfgContainer [2024-10-24 14:59:56,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:59:56,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:59:56,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:59:56,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:59:56,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:59:53" (1/3) ... [2024-10-24 14:59:56,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9e518f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:56, skipping insertion in model container [2024-10-24 14:59:56,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:53" (2/3) ... [2024-10-24 14:59:56,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9e518f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:56, skipping insertion in model container [2024-10-24 14:59:56,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:56" (3/3) ... [2024-10-24 14:59:56,112 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2024-10-24 14:59:56,145 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:59:56,146 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 14:59:56,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:59:56,264 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;@1ad56498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:59:56,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 14:59:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-24 14:59:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 14:59:56,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:59:56,279 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:59:56,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:59:56,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:59:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1181736163, now seen corresponding path program 1 times [2024-10-24 14:59:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:59:56,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873100376] [2024-10-24 14:59:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:59:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:59:56,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:59:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873100376] [2024-10-24 14:59:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873100376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:59:56,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:59:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:59:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277660106] [2024-10-24 14:59:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:59:56,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:59:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:59:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:59:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:59:56,511 INFO L87 Difference]: Start difference. First operand has 430 states, 404 states have (on average 1.636138613861386) internal successors, (661), 421 states have internal predecessors, (661), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:59:56,588 INFO L93 Difference]: Finished difference Result 859 states and 1418 transitions. [2024-10-24 14:59:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:59:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-24 14:59:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:59:56,602 INFO L225 Difference]: With dead ends: 859 [2024-10-24 14:59:56,602 INFO L226 Difference]: Without dead ends: 428 [2024-10-24 14:59:56,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:59:56,610 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:59:56,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:59:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-24 14:59:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-24 14:59:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-24 14:59:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-24 14:59:56,684 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-24 14:59:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:59:56,685 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-24 14:59:56,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-24 14:59:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 14:59:56,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:59:56,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:59:56,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:59:56,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:59:56,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:59:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 182152541, now seen corresponding path program 1 times [2024-10-24 14:59:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:59:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775341028] [2024-10-24 14:59:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:59:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:59:57,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:59:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775341028] [2024-10-24 14:59:57,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775341028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:59:57,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:59:57,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:59:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693919493] [2024-10-24 14:59:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:59:57,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:59:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:59:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:59:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:59:57,177 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:59:57,372 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-24 14:59:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:59:57,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-24 14:59:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:59:57,378 INFO L225 Difference]: With dead ends: 1039 [2024-10-24 14:59:57,379 INFO L226 Difference]: Without dead ends: 812 [2024-10-24 14:59:57,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:59:57,383 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 546 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:59:57,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1821 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:59:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-24 14:59:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-24 14:59:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-24 14:59:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-24 14:59:57,429 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-24 14:59:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:59:57,429 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-24 14:59:57,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-24 14:59:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:59:57,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:59:57,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:59:57,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:59:57,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:59:57,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:59:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash 205336912, now seen corresponding path program 1 times [2024-10-24 14:59:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:59:57,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267152027] [2024-10-24 14:59:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:59:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:59:57,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:59:57,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267152027] [2024-10-24 14:59:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267152027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:59:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:59:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:59:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489919980] [2024-10-24 14:59:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:59:57,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:59:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:59:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:59:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:59:57,723 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:59:57,853 INFO L93 Difference]: Finished difference Result 860 states and 1266 transitions. [2024-10-24 14:59:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:59:57,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 14:59:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:59:57,856 INFO L225 Difference]: With dead ends: 860 [2024-10-24 14:59:57,857 INFO L226 Difference]: Without dead ends: 433 [2024-10-24 14:59:57,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:59:57,859 INFO L432 NwaCegarLoop]: 599 mSDtfsCounter, 105 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:59:57,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1706 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:59:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-24 14:59:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2024-10-24 14:59:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4469135802469135) internal successors, (586), 421 states have internal predecessors, (586), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-24 14:59:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 626 transitions. [2024-10-24 14:59:57,912 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 626 transitions. Word has length 84 [2024-10-24 14:59:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:59:57,913 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 626 transitions. [2024-10-24 14:59:57,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 626 transitions. [2024-10-24 14:59:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:59:57,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:59:57,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:59:57,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:59:57,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:59:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:59:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 361770564, now seen corresponding path program 1 times [2024-10-24 14:59:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:59:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544257413] [2024-10-24 14:59:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:59:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:59:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:59:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544257413] [2024-10-24 14:59:58,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544257413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:59:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:59:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:59:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950498058] [2024-10-24 14:59:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:59:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:59:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:59:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:59:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:59:58,161 INFO L87 Difference]: Start difference. First operand 430 states and 626 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:59:58,282 INFO L93 Difference]: Finished difference Result 1151 states and 1681 transitions. [2024-10-24 14:59:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:59:58,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 14:59:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:59:58,288 INFO L225 Difference]: With dead ends: 1151 [2024-10-24 14:59:58,288 INFO L226 Difference]: Without dead ends: 724 [2024-10-24 14:59:58,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:59:58,294 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 371 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:59:58,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1406 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:59:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-24 14:59:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2024-10-24 14:59:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 695 states have (on average 1.4561151079136692) internal successors, (1012), 711 states have internal predecessors, (1012), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 14:59:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1054 transitions. [2024-10-24 14:59:58,329 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1054 transitions. Word has length 84 [2024-10-24 14:59:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:59:58,330 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1054 transitions. [2024-10-24 14:59:58,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:59:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1054 transitions. [2024-10-24 14:59:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 14:59:58,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:59:58,334 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:59:58,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:59:58,335 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:59:58,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:59:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash 537647418, now seen corresponding path program 1 times [2024-10-24 14:59:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:59:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540192841] [2024-10-24 14:59:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:59:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:58,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:59:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:58,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:59:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:59:58,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:59:58,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540192841] [2024-10-24 14:59:58,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540192841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:59:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043009103] [2024-10-24 14:59:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:59:58,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:59:58,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:59:58,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:59:58,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:59:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:59:59,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 14:59:59,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:59:59,330 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 [2024-10-24 14:59:59,359 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 16 treesize of output 17 [2024-10-24 15:00:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 15:00:00,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:00:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043009103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:00,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:00:00,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-24 15:00:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142663369] [2024-10-24 15:00:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:00,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 15:00:00,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:00,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 15:00:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-24 15:00:00,279 INFO L87 Difference]: Start difference. First operand 721 states and 1054 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:02,319 INFO L93 Difference]: Finished difference Result 1690 states and 2454 transitions. [2024-10-24 15:00:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 15:00:02,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2024-10-24 15:00:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:02,331 INFO L225 Difference]: With dead ends: 1690 [2024-10-24 15:00:02,331 INFO L226 Difference]: Without dead ends: 1054 [2024-10-24 15:00:02,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-24 15:00:02,334 INFO L432 NwaCegarLoop]: 645 mSDtfsCounter, 815 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:02,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 3729 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 15:00:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-10-24 15:00:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 747. [2024-10-24 15:00:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 721 states have (on average 1.4466019417475728) internal successors, (1043), 737 states have internal predecessors, (1043), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 15:00:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1085 transitions. [2024-10-24 15:00:02,360 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1085 transitions. Word has length 97 [2024-10-24 15:00:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:02,360 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1085 transitions. [2024-10-24 15:00:02,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1085 transitions. [2024-10-24 15:00:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 15:00:02,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:02,362 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:02,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 15:00:02,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:02,567 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:02,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2140648114, now seen corresponding path program 1 times [2024-10-24 15:00:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:02,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74864282] [2024-10-24 15:00:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:02,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:02,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 15:00:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:03,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 15:00:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:00:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74864282] [2024-10-24 15:00:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74864282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:00:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44762005] [2024-10-24 15:00:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:00:03,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:00:03,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 15:00:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:03,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-24 15:00:03,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:00:03,337 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 [2024-10-24 15:00:03,359 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 16 treesize of output 17 [2024-10-24 15:00:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 15:00:04,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:00:04,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44762005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:04,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:00:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-24 15:00:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906770961] [2024-10-24 15:00:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:04,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 15:00:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:04,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 15:00:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:00:04,233 INFO L87 Difference]: Start difference. First operand 747 states and 1085 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:05,677 INFO L93 Difference]: Finished difference Result 1738 states and 2518 transitions. [2024-10-24 15:00:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 15:00:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2024-10-24 15:00:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:05,682 INFO L225 Difference]: With dead ends: 1738 [2024-10-24 15:00:05,682 INFO L226 Difference]: Without dead ends: 1107 [2024-10-24 15:00:05,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-24 15:00:05,685 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 900 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:05,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 2861 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 15:00:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-10-24 15:00:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 783. [2024-10-24 15:00:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 757 states have (on average 1.4385733157199472) internal successors, (1089), 773 states have internal predecessors, (1089), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 15:00:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1131 transitions. [2024-10-24 15:00:05,714 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1131 transitions. Word has length 98 [2024-10-24 15:00:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:05,714 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1131 transitions. [2024-10-24 15:00:05,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1131 transitions. [2024-10-24 15:00:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 15:00:05,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:05,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:05,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 15:00:05,918 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,SelfDestructingSolverStorable5 [2024-10-24 15:00:05,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:05,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 215482958, now seen corresponding path program 1 times [2024-10-24 15:00:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118910176] [2024-10-24 15:00:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:06,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 15:00:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:06,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 15:00:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 15:00:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118910176] [2024-10-24 15:00:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118910176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:00:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 15:00:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119564349] [2024-10-24 15:00:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:06,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 15:00:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 15:00:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 15:00:06,287 INFO L87 Difference]: Start difference. First operand 783 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:07,646 INFO L93 Difference]: Finished difference Result 1476 states and 2146 transitions. [2024-10-24 15:00:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 15:00:07,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-24 15:00:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:07,650 INFO L225 Difference]: With dead ends: 1476 [2024-10-24 15:00:07,650 INFO L226 Difference]: Without dead ends: 819 [2024-10-24 15:00:07,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 15:00:07,654 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 68 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:07,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3025 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 15:00:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-24 15:00:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2024-10-24 15:00:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 785 states have (on average 1.4394904458598725) internal successors, (1130), 801 states have internal predecessors, (1130), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 15:00:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1172 transitions. [2024-10-24 15:00:07,676 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1172 transitions. Word has length 99 [2024-10-24 15:00:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:07,677 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1172 transitions. [2024-10-24 15:00:07,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1172 transitions. [2024-10-24 15:00:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 15:00:07,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:07,679 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:07,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:00:07,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:07,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1989403755, now seen corresponding path program 1 times [2024-10-24 15:00:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732275190] [2024-10-24 15:00:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:08,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 15:00:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:08,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 15:00:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 15:00:08,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:08,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732275190] [2024-10-24 15:00:08,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732275190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:08,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:00:08,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 15:00:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677129905] [2024-10-24 15:00:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:08,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 15:00:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 15:00:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 15:00:08,085 INFO L87 Difference]: Start difference. First operand 811 states and 1172 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:08,949 INFO L93 Difference]: Finished difference Result 1502 states and 2183 transitions. [2024-10-24 15:00:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 15:00:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-24 15:00:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:08,954 INFO L225 Difference]: With dead ends: 1502 [2024-10-24 15:00:08,955 INFO L226 Difference]: Without dead ends: 819 [2024-10-24 15:00:08,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 15:00:08,957 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 63 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:08,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2258 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 15:00:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-24 15:00:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-10-24 15:00:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 791 states have (on average 1.436156763590392) internal successors, (1136), 807 states have internal predecessors, (1136), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 15:00:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1178 transitions. [2024-10-24 15:00:08,984 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1178 transitions. Word has length 99 [2024-10-24 15:00:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:08,985 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1178 transitions. [2024-10-24 15:00:08,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1178 transitions. [2024-10-24 15:00:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 15:00:08,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:08,986 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:08,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:00:08,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:08,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash -850258618, now seen corresponding path program 1 times [2024-10-24 15:00:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500609836] [2024-10-24 15:00:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:09,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 15:00:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:09,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 15:00:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:00:09,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:09,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500609836] [2024-10-24 15:00:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500609836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:00:09,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131468829] [2024-10-24 15:00:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:09,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:00:09,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:00:09,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 15:00:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:09,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 15:00:09,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:00:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 15:00:09,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:00:09,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131468829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:09,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:00:09,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 15:00:09,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574831638] [2024-10-24 15:00:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:09,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 15:00:09,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 15:00:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:00:09,865 INFO L87 Difference]: Start difference. First operand 817 states and 1178 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:10,429 INFO L93 Difference]: Finished difference Result 1530 states and 2217 transitions. [2024-10-24 15:00:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 15:00:10,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-24 15:00:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:10,435 INFO L225 Difference]: With dead ends: 1530 [2024-10-24 15:00:10,435 INFO L226 Difference]: Without dead ends: 837 [2024-10-24 15:00:10,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 15:00:10,439 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 43 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:10,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3085 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 15:00:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-10-24 15:00:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 813. [2024-10-24 15:00:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 787 states have (on average 1.434561626429479) internal successors, (1129), 803 states have internal predecessors, (1129), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 15:00:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1171 transitions. [2024-10-24 15:00:10,466 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1171 transitions. Word has length 100 [2024-10-24 15:00:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:10,467 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1171 transitions. [2024-10-24 15:00:10,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1171 transitions. [2024-10-24 15:00:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 15:00:10,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:10,469 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:10,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 15:00:10,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:10,671 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:10,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash 893901487, now seen corresponding path program 1 times [2024-10-24 15:00:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895061384] [2024-10-24 15:00:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:10,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 15:00:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:11,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 15:00:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:00:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895061384] [2024-10-24 15:00:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895061384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:00:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318894037] [2024-10-24 15:00:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:11,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:11,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:00:11,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:00:11,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 15:00:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:12,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:00:12,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:00:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:00:12,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:00:12,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318894037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:00:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 15:00:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674611235] [2024-10-24 15:00:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:12,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 15:00:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 15:00:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 15:00:12,175 INFO L87 Difference]: Start difference. First operand 813 states and 1171 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 15:00:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:12,258 INFO L93 Difference]: Finished difference Result 1404 states and 2031 transitions. [2024-10-24 15:00:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 15:00:12,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-10-24 15:00:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:12,263 INFO L225 Difference]: With dead ends: 1404 [2024-10-24 15:00:12,263 INFO L226 Difference]: Without dead ends: 645 [2024-10-24 15:00:12,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 15:00:12,266 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 24 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:12,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2097 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 15:00:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-24 15:00:12,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2024-10-24 15:00:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 618 states have (on average 1.4223300970873787) internal successors, (879), 635 states have internal predecessors, (879), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 15:00:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 922 transitions. [2024-10-24 15:00:12,294 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 922 transitions. Word has length 100 [2024-10-24 15:00:12,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:12,294 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 922 transitions. [2024-10-24 15:00:12,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 15:00:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 922 transitions. [2024-10-24 15:00:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 15:00:12,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:12,296 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:12,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 15:00:12,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:12,497 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:12,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1120818715, now seen corresponding path program 1 times [2024-10-24 15:00:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868754184] [2024-10-24 15:00:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:12,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 15:00:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:12,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 15:00:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 15:00:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868754184] [2024-10-24 15:00:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868754184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:00:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524723544] [2024-10-24 15:00:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:00:12,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:00:12,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 15:00:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:13,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 15:00:13,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:00:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 15:00:13,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:00:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524723544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:13,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:00:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-24 15:00:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182835899] [2024-10-24 15:00:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:13,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 15:00:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 15:00:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 15:00:13,632 INFO L87 Difference]: Start difference. First operand 645 states and 922 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:14,123 INFO L93 Difference]: Finished difference Result 1246 states and 1794 transitions. [2024-10-24 15:00:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 15:00:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-24 15:00:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:14,127 INFO L225 Difference]: With dead ends: 1246 [2024-10-24 15:00:14,127 INFO L226 Difference]: Without dead ends: 655 [2024-10-24 15:00:14,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 15:00:14,129 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 12 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:14,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2803 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 15:00:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2024-10-24 15:00:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 651. [2024-10-24 15:00:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 624 states have (on average 1.4182692307692308) internal successors, (885), 641 states have internal predecessors, (885), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 15:00:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 928 transitions. [2024-10-24 15:00:14,150 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 928 transitions. Word has length 102 [2024-10-24 15:00:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:14,151 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 928 transitions. [2024-10-24 15:00:14,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 928 transitions. [2024-10-24 15:00:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 15:00:14,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:14,152 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:14,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 15:00:14,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 15:00:14,353 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:14,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1523764491, now seen corresponding path program 1 times [2024-10-24 15:00:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727998961] [2024-10-24 15:00:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:14,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 15:00:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:14,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 15:00:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 15:00:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727998961] [2024-10-24 15:00:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727998961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:00:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:00:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 15:00:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800364550] [2024-10-24 15:00:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:00:14,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 15:00:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:00:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 15:00:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 15:00:14,879 INFO L87 Difference]: Start difference. First operand 651 states and 928 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 15:00:16,010 INFO L93 Difference]: Finished difference Result 1275 states and 1830 transitions. [2024-10-24 15:00:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 15:00:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-10-24 15:00:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 15:00:16,014 INFO L225 Difference]: With dead ends: 1275 [2024-10-24 15:00:16,015 INFO L226 Difference]: Without dead ends: 683 [2024-10-24 15:00:16,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 15:00:16,017 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 77 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 15:00:16,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4042 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 15:00:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-10-24 15:00:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 671. [2024-10-24 15:00:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 644 states have (on average 1.4114906832298137) internal successors, (909), 661 states have internal predecessors, (909), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 15:00:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 952 transitions. [2024-10-24 15:00:16,041 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 952 transitions. Word has length 104 [2024-10-24 15:00:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 15:00:16,041 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 952 transitions. [2024-10-24 15:00:16,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 15:00:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 952 transitions. [2024-10-24 15:00:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 15:00:16,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 15:00:16,043 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:00:16,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:00:16,043 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 15:00:16,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:00:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 251281846, now seen corresponding path program 1 times [2024-10-24 15:00:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:00:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396202902] [2024-10-24 15:00:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:00:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:16,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 15:00:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:16,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 15:00:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 15:00:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:00:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396202902] [2024-10-24 15:00:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396202902] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:00:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708168193] [2024-10-24 15:00:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:00:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:00:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:00:16,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:00:16,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 15:00:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:00:17,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-24 15:00:17,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:00:17,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-24 15:00:17,117 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 19 treesize of output 1 [2024-10-24 15:00:17,121 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 19 treesize of output 1 [2024-10-24 15:00:17,146 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-10-24 15:00:17,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2024-10-24 15:00:17,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-24 15:00:17,326 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-10-24 15:00:17,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-10-24 15:00:17,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2024-10-24 15:00:19,185 INFO L224 Elim1Store]: Index analysis took 117 ms