./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_BER_test8-2.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_BER_test8-2.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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:43:01,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:43:01,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:43:01,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:43:01,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:43:01,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:43:01,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:43:01,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:43:01,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:43:01,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:43:01,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:43:01,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:43:01,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:43:01,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:43:01,881 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:43:01,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:43:01,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:43:01,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:43:01,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:43:01,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:43:01,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:43:01,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:43:01,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:43:01,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:43:01,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:43:01,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:43:01,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:43:01,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:43:01,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:43:01,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:43:01,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:43:01,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:43:01,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:43:01,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:43:01,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:43:01,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:43:01,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:43:01,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:43:01,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:43:01,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:43:01,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:43:01,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:43:01,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2024-10-24 14:43:02,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:43:02,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:43:02,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:43:02,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:43:02,198 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:43:02,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-10-24 14:43:03,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:43:03,976 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:43:03,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-10-24 14:43:04,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e4f6a66/265c0ccbd2fd498bb2584b8111218c1d/FLAGa73446f07 [2024-10-24 14:43:04,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e4f6a66/265c0ccbd2fd498bb2584b8111218c1d [2024-10-24 14:43:04,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:43:04,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:43:04,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:43:04,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:43:04,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:43:04,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:43:04" (1/1) ... [2024-10-24 14:43:04,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7068be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:04, skipping insertion in model container [2024-10-24 14:43:04,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:43:04" (1/1) ... [2024-10-24 14:43:04,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:43:04,735 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_BER_test8-2.i[33021,33034] [2024-10-24 14:43:04,865 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_BER_test8-2.i[45234,45247] [2024-10-24 14:43:04,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:43:04,897 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:43:04,939 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_BER_test8-2.i[33021,33034] [2024-10-24 14:43:05,012 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_BER_test8-2.i[45234,45247] [2024-10-24 14:43:05,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:43:05,068 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:43:05,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05 WrapperNode [2024-10-24 14:43:05,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:43:05,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:43:05,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:43:05,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:43:05,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,214 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-10-24 14:43:05,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:43:05,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:43:05,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:43:05,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:43:05,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,388 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-10-24 14:43:05,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:43:05,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:43:05,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:43:05,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:43:05,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (1/1) ... [2024-10-24 14:43:05,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:43:05,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:05,562 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 14:43:05,567 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 14:43:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:43:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:43:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:43:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:43:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:43:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:43:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:43:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:43:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:43:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:43:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:43:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:43:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:43:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-24 14:43:05,618 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:43:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:43:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:43:05,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:43:05,889 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:43:05,891 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:43:07,437 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-10-24 14:43:07,437 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:43:07,488 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:43:07,489 INFO L314 CfgBuilder]: Removed 71 assume(true) statements. [2024-10-24 14:43:07,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:43:07 BoogieIcfgContainer [2024-10-24 14:43:07,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:43:07,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:43:07,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:43:07,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:43:07,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:43:04" (1/3) ... [2024-10-24 14:43:07,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cf3e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:43:07, skipping insertion in model container [2024-10-24 14:43:07,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:43:05" (2/3) ... [2024-10-24 14:43:07,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cf3e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:43:07, skipping insertion in model container [2024-10-24 14:43:07,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:43:07" (3/3) ... [2024-10-24 14:43:07,497 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2024-10-24 14:43:07,512 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:43:07,513 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 14:43:07,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:43:07,607 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;@23b9ca2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:43:07,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 14:43:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 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 14:43:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 14:43:07,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:07,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:43:07,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:07,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1067961426, now seen corresponding path program 1 times [2024-10-24 14:43:07,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51877249] [2024-10-24 14:43:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:07,819 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 14:43:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51877249] [2024-10-24 14:43:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51877249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:43:07,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472875666] [2024-10-24 14:43:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:07,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:43:07,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:43:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:43:07,853 INFO L87 Difference]: Start difference. First operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 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 14:43:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:07,966 INFO L93 Difference]: Finished difference Result 927 states and 1530 transitions. [2024-10-24 14:43:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:43:07,970 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 14:43:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:07,982 INFO L225 Difference]: With dead ends: 927 [2024-10-24 14:43:07,982 INFO L226 Difference]: Without dead ends: 428 [2024-10-24 14:43:07,989 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 14:43:07,992 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:07,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 674 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:43:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-24 14:43:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-24 14:43:08,059 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 14:43:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-24 14:43:08,065 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-24 14:43:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:08,065 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-24 14:43:08,065 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 14:43:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-24 14:43:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 14:43:08,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:08,069 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 14:43:08,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:43:08,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:08,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 403066284, now seen corresponding path program 1 times [2024-10-24 14:43:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507611620] [2024-10-24 14:43:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:08,518 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 14:43:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507611620] [2024-10-24 14:43:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507611620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:43:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876353060] [2024-10-24 14:43:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:08,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:43:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:43:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:43:08,523 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 14:43:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:08,754 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-24 14:43:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:43:08,755 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 14:43:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:08,761 INFO L225 Difference]: With dead ends: 1039 [2024-10-24 14:43:08,762 INFO L226 Difference]: Without dead ends: 812 [2024-10-24 14:43:08,764 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 14:43:08,765 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 546 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:08,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1907 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:43:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-24 14:43:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-24 14:43:08,804 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 14:43:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-24 14:43:08,806 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-24 14:43:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:08,807 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-24 14:43:08,807 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 14:43:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-24 14:43:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:43:08,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:08,810 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 14:43:08,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:43:08,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:08,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1680180753, now seen corresponding path program 1 times [2024-10-24 14:43:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:08,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360877716] [2024-10-24 14:43:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:09,152 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 14:43:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360877716] [2024-10-24 14:43:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360877716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:43:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501504671] [2024-10-24 14:43:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:09,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:43:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:43:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:43:09,155 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 14:43:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:09,277 INFO L93 Difference]: Finished difference Result 815 states and 1197 transitions. [2024-10-24 14:43:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:43:09,278 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 14:43:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:09,282 INFO L225 Difference]: With dead ends: 815 [2024-10-24 14:43:09,282 INFO L226 Difference]: Without dead ends: 388 [2024-10-24 14:43:09,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:43:09,286 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 30 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:09,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1558 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:43:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-24 14:43:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-10-24 14:43:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 363 states have (on average 1.421487603305785) internal successors, (516), 379 states have internal predecessors, (516), 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 14:43:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2024-10-24 14:43:09,312 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2024-10-24 14:43:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:09,312 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2024-10-24 14:43:09,312 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 14:43:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2024-10-24 14:43:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:43:09,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:09,315 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 14:43:09,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:43:09,315 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:09,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1523747101, now seen corresponding path program 1 times [2024-10-24 14:43:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860111694] [2024-10-24 14:43:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:09,503 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 14:43:09,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:09,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860111694] [2024-10-24 14:43:09,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860111694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:09,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:09,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:43:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679619776] [2024-10-24 14:43:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:09,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:43:09,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:43:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:43:09,506 INFO L87 Difference]: Start difference. First operand 388 states and 556 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 14:43:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:09,630 INFO L93 Difference]: Finished difference Result 1025 states and 1471 transitions. [2024-10-24 14:43:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:43:09,631 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 14:43:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:09,635 INFO L225 Difference]: With dead ends: 1025 [2024-10-24 14:43:09,636 INFO L226 Difference]: Without dead ends: 640 [2024-10-24 14:43:09,637 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 14:43:09,641 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 295 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1251 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 14:43:09,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1251 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:43:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-24 14:43:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-10-24 14:43:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.4271685761047463) internal successors, (872), 627 states have internal predecessors, (872), 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 14:43:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 914 transitions. [2024-10-24 14:43:09,688 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 914 transitions. Word has length 84 [2024-10-24 14:43:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:09,691 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 914 transitions. [2024-10-24 14:43:09,691 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 14:43:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 914 transitions. [2024-10-24 14:43:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 14:43:09,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:09,695 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 14:43:09,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:43:09,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:09,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -365634345, now seen corresponding path program 1 times [2024-10-24 14:43:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684648098] [2024-10-24 14:43:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:10,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:43:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:10,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:43:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:10,251 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 14:43:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684648098] [2024-10-24 14:43:10,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684648098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:43:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133780820] [2024-10-24 14:43:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:10,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:43:10,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:10,255 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 14:43:10,257 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 14:43:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:10,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 14:43:10,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:43:10,671 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 14:43:10,706 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 22 treesize of output 7 [2024-10-24 14:43:11,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 14:43:11,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-10-24 14:43:11,520 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 14:43:11,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:43:11,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133780820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:11,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:43:11,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-24 14:43:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503885216] [2024-10-24 14:43:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:11,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:43:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:43:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:43:11,523 INFO L87 Difference]: Start difference. First operand 637 states and 914 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 14:43:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:14,281 INFO L93 Difference]: Finished difference Result 1529 states and 2195 transitions. [2024-10-24 14:43:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:43:14,287 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 14:43:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:14,292 INFO L225 Difference]: With dead ends: 1529 [2024-10-24 14:43:14,292 INFO L226 Difference]: Without dead ends: 935 [2024-10-24 14:43:14,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:43:14,295 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 601 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:14,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 3266 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 14:43:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-10-24 14:43:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 637. [2024-10-24 14:43:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 611 states have (on average 1.425531914893617) internal successors, (871), 627 states have internal predecessors, (871), 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 14:43:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 913 transitions. [2024-10-24 14:43:14,323 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 913 transitions. Word has length 97 [2024-10-24 14:43:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:14,323 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 913 transitions. [2024-10-24 14:43:14,324 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 14:43:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 913 transitions. [2024-10-24 14:43:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 14:43:14,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:14,325 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 14:43:14,348 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 14:43:14,526 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 14:43:14,526 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:14,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -438948079, now seen corresponding path program 1 times [2024-10-24 14:43:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:14,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710394469] [2024-10-24 14:43:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:14,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:14,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:43:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:14,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:43:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:14,974 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 14:43:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710394469] [2024-10-24 14:43:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710394469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:43:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707045239] [2024-10-24 14:43:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:14,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:43:14,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:14,977 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 14:43:14,979 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 14:43:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:15,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 14:43:15,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:43:15,361 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 14:43:15,385 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 22 treesize of output 7 [2024-10-24 14:43:16,291 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 14:43:16,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:43:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707045239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:43:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-24 14:43:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945508843] [2024-10-24 14:43:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:16,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 14:43:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 14:43:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:43:16,294 INFO L87 Difference]: Start difference. First operand 637 states and 913 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 14:43:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:17,652 INFO L93 Difference]: Finished difference Result 1544 states and 2215 transitions. [2024-10-24 14:43:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 14:43:17,655 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 14:43:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:17,662 INFO L225 Difference]: With dead ends: 1544 [2024-10-24 14:43:17,662 INFO L226 Difference]: Without dead ends: 955 [2024-10-24 14:43:17,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-24 14:43:17,665 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 654 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:17,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 3613 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:43:17,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-10-24 14:43:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 653. [2024-10-24 14:43:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.4210526315789473) internal successors, (891), 643 states have internal predecessors, (891), 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 14:43:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2024-10-24 14:43:17,690 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 98 [2024-10-24 14:43:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:17,691 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2024-10-24 14:43:17,691 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 14:43:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2024-10-24 14:43:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 14:43:17,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:17,693 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 14:43:17,713 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 14:43:17,896 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 14:43:17,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:17,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1504714283, now seen corresponding path program 1 times [2024-10-24 14:43:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815711258] [2024-10-24 14:43:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:18,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:43:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:18,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:43:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:18,248 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 14:43:18,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815711258] [2024-10-24 14:43:18,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815711258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:18,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:18,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:43:18,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935872919] [2024-10-24 14:43:18,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:18,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:43:18,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:43:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:43:18,252 INFO L87 Difference]: Start difference. First operand 653 states and 933 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 14:43:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:19,095 INFO L93 Difference]: Finished difference Result 1261 states and 1817 transitions. [2024-10-24 14:43:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:43:19,096 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 14:43:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:19,099 INFO L225 Difference]: With dead ends: 1261 [2024-10-24 14:43:19,099 INFO L226 Difference]: Without dead ends: 665 [2024-10-24 14:43:19,101 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 14:43:19,102 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 68 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:19,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2790 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:43:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-24 14:43:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 661. [2024-10-24 14:43:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 635 states have (on average 1.4188976377952756) internal successors, (901), 651 states have internal predecessors, (901), 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 14:43:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2024-10-24 14:43:19,126 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 99 [2024-10-24 14:43:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:19,127 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2024-10-24 14:43:19,129 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 14:43:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2024-10-24 14:43:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 14:43:19,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:19,130 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 14:43:19,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:43:19,131 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:19,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash -700172430, now seen corresponding path program 1 times [2024-10-24 14:43:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342114270] [2024-10-24 14:43:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:19,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:43:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:19,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:43:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:19,525 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 14:43:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342114270] [2024-10-24 14:43:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342114270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:43:19,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:43:19,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124824431] [2024-10-24 14:43:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:19,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:43:19,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:43:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:43:19,528 INFO L87 Difference]: Start difference. First operand 661 states and 943 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 14:43:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:20,307 INFO L93 Difference]: Finished difference Result 1276 states and 1837 transitions. [2024-10-24 14:43:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:43:20,309 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 14:43:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:20,313 INFO L225 Difference]: With dead ends: 1276 [2024-10-24 14:43:20,313 INFO L226 Difference]: Without dead ends: 669 [2024-10-24 14:43:20,315 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 14:43:20,315 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 63 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:20,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2423 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:43:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-24 14:43:20,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2024-10-24 14:43:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 641 states have (on average 1.4149765990639624) internal successors, (907), 657 states have internal predecessors, (907), 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 14:43:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 949 transitions. [2024-10-24 14:43:20,339 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 949 transitions. Word has length 99 [2024-10-24 14:43:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:20,339 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 949 transitions. [2024-10-24 14:43:20,339 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 14:43:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 949 transitions. [2024-10-24 14:43:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 14:43:20,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:20,341 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 14:43:20,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:43:20,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:20,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash 113541477, now seen corresponding path program 1 times [2024-10-24 14:43:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604971001] [2024-10-24 14:43:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:20,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:43:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:20,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:43:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:20,752 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 14:43:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:20,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604971001] [2024-10-24 14:43:20,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604971001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:43:20,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487342278] [2024-10-24 14:43:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:20,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:43:20,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:20,755 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 14:43:20,756 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 14:43:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:21,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 14:43:21,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:43:21,201 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 14:43:21,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:43:21,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487342278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:21,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:43:21,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:43:21,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199885022] [2024-10-24 14:43:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:21,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:43:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:43:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:43:21,204 INFO L87 Difference]: Start difference. First operand 667 states and 949 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 14:43:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:21,534 INFO L93 Difference]: Finished difference Result 1290 states and 1849 transitions. [2024-10-24 14:43:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:43:21,535 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 14:43:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:21,539 INFO L225 Difference]: With dead ends: 1290 [2024-10-24 14:43:21,539 INFO L226 Difference]: Without dead ends: 673 [2024-10-24 14:43:21,541 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 14:43:21,542 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 43 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:21,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2851 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:43:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-24 14:43:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 655. [2024-10-24 14:43:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4133545310015898) internal successors, (889), 645 states have internal predecessors, (889), 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 14:43:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-10-24 14:43:21,562 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 100 [2024-10-24 14:43:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:21,563 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-10-24 14:43:21,563 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 14:43:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-10-24 14:43:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 14:43:21,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:21,564 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 14:43:21,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:43:21,768 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 14:43:21,769 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:21,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1857701582, now seen corresponding path program 1 times [2024-10-24 14:43:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260470210] [2024-10-24 14:43:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:22,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:43:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:22,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:43:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:22,228 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 14:43:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260470210] [2024-10-24 14:43:22,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260470210] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:43:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570409978] [2024-10-24 14:43:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:43:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:22,230 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 14:43:22,233 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 14:43:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:22,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:43:22,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:43:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:43:22,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:43:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570409978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:22,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:43:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-24 14:43:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197883276] [2024-10-24 14:43:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:22,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:43:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:43:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:43:22,651 INFO L87 Difference]: Start difference. First operand 655 states and 931 transitions. Second operand has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:43:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:43:22,705 INFO L93 Difference]: Finished difference Result 1213 states and 1738 transitions. [2024-10-24 14:43:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:43:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-24 14:43:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:43:22,710 INFO L225 Difference]: With dead ends: 1213 [2024-10-24 14:43:22,710 INFO L226 Difference]: Without dead ends: 657 [2024-10-24 14:43:22,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:43:22,713 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:43:22,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1619 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:43:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-10-24 14:43:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-10-24 14:43:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 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 14:43:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-24 14:43:22,740 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 100 [2024-10-24 14:43:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:43:22,740 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-24 14:43:22,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:43:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-24 14:43:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:43:22,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:43:22,742 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 14:43:22,763 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 14:43:22,946 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 14:43:22,947 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:43:22,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:43:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash -212498694, now seen corresponding path program 1 times [2024-10-24 14:43:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:43:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896650005] [2024-10-24 14:43:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:43:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:23,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:43:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:23,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:43:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:23,394 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 14:43:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:43:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896650005] [2024-10-24 14:43:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896650005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:43:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817750866] [2024-10-24 14:43:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:43:23,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:43:23,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:43:23,397 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 14:43:23,399 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 14:43:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:43:23,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 14:43:23,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:43:35,066 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 14:43:35,066 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:43:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817750866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:43:35,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:43:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-24 14:43:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240519372] [2024-10-24 14:43:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:43:35,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:43:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:43:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:43:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:43:35,068 INFO L87 Difference]: Start difference. First operand 657 states and 934 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 14:43:39,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:43:43,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:43:46,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:43:49,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:43:53,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:43:56,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:44:00,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:44:04,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-24 14:44:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:05,156 INFO L93 Difference]: Finished difference Result 1262 states and 1810 transitions. [2024-10-24 14:44:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:44:05,157 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 14:44:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:05,161 INFO L225 Difference]: With dead ends: 1262 [2024-10-24 14:44:05,161 INFO L226 Difference]: Without dead ends: 667 [2024-10-24 14:44:05,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:44:05,163 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:05,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2830 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 441 Invalid, 5 Unknown, 0 Unchecked, 30.0s Time] [2024-10-24 14:44:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-10-24 14:44:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 657. [2024-10-24 14:44:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 647 states have internal predecessors, (891), 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 14:44:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 934 transitions. [2024-10-24 14:44:05,185 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 934 transitions. Word has length 102 [2024-10-24 14:44:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:05,186 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 934 transitions. [2024-10-24 14:44:05,186 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 14:44:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 934 transitions. [2024-10-24 14:44:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 14:44:05,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:05,189 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 14:44:05,212 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 14:44:05,389 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 14:44:05,390 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:05,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1066405290, now seen corresponding path program 1 times [2024-10-24 14:44:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749352733] [2024-10-24 14:44:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:05,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:44:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:05,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:44:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:05,929 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 14:44:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:44:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749352733] [2024-10-24 14:44:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749352733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:44:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:44:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:44:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252055052] [2024-10-24 14:44:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:44:05,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:44:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:44:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:44:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:44:05,933 INFO L87 Difference]: Start difference. First operand 657 states and 934 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 14:44:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:07,167 INFO L93 Difference]: Finished difference Result 1284 states and 1839 transitions. [2024-10-24 14:44:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:44:07,168 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 14:44:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:07,171 INFO L225 Difference]: With dead ends: 1284 [2024-10-24 14:44:07,172 INFO L226 Difference]: Without dead ends: 689 [2024-10-24 14:44:07,174 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 14:44:07,174 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 80 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:07,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 3270 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 14:44:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-24 14:44:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2024-10-24 14:44:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 650 states have (on average 1.4076923076923078) internal successors, (915), 667 states have internal predecessors, (915), 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 14:44:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 958 transitions. [2024-10-24 14:44:07,202 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 958 transitions. Word has length 104 [2024-10-24 14:44:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:07,202 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 958 transitions. [2024-10-24 14:44:07,202 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 14:44:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 958 transitions. [2024-10-24 14:44:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 14:44:07,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:07,204 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 14:44:07,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:44:07,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:07,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:07,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1952309106, now seen corresponding path program 1 times [2024-10-24 14:44:07,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:07,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139812005] [2024-10-24 14:44:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:07,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:44:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:07,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:44:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:07,649 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 14:44:07,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:44:07,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139812005] [2024-10-24 14:44:07,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139812005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:44:07,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751395436] [2024-10-24 14:44:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:07,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:44:07,652 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 14:44:07,654 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 14:44:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:08,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 14:44:08,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:44:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:44:08,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:44:08,281 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 14:44:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751395436] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:44:08,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:44:08,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 14:44:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299593058] [2024-10-24 14:44:08,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:44:08,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:44:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:44:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:44:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:44:08,322 INFO L87 Difference]: Start difference. First operand 677 states and 958 transitions. Second operand has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:44:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:09,165 INFO L93 Difference]: Finished difference Result 1254 states and 1792 transitions. [2024-10-24 14:44:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:44:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 104 [2024-10-24 14:44:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:09,171 INFO L225 Difference]: With dead ends: 1254 [2024-10-24 14:44:09,171 INFO L226 Difference]: Without dead ends: 686 [2024-10-24 14:44:09,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-10-24 14:44:09,174 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 59 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:09,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2289 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:44:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-10-24 14:44:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 685. [2024-10-24 14:44:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 657 states have (on average 1.4124809741248097) internal successors, (928), 674 states have internal predecessors, (928), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 14:44:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 971 transitions. [2024-10-24 14:44:09,202 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 971 transitions. Word has length 104 [2024-10-24 14:44:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:09,203 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 971 transitions. [2024-10-24 14:44:09,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 13.5) internal successors, (108), 10 states have internal predecessors, (108), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:44:09,203 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 971 transitions. [2024-10-24 14:44:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 14:44:09,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:09,204 INFO L215 NwaCegarLoop]: trace histogram [6, 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 14:44:09,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 14:44:09,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:09,406 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:09,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1583500834, now seen corresponding path program 2 times [2024-10-24 14:44:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119109673] [2024-10-24 14:44:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:10,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:44:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:10,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 14:44:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 14:44:10,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:44:10,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119109673] [2024-10-24 14:44:10,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119109673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:44:10,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387497159] [2024-10-24 14:44:10,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:44:10,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:10,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:44:10,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:44:10,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 14:44:10,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:44:10,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:44:10,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 14:44:10,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:44:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 14:44:11,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:44:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387497159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:44:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:44:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-10-24 14:44:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476156639] [2024-10-24 14:44:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:44:11,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:44:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:44:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:44:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:44:11,293 INFO L87 Difference]: Start difference. First operand 685 states and 971 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 14:44:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:12,152 INFO L93 Difference]: Finished difference Result 1328 states and 1899 transitions. [2024-10-24 14:44:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:44:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 108 [2024-10-24 14:44:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:12,158 INFO L225 Difference]: With dead ends: 1328 [2024-10-24 14:44:12,158 INFO L226 Difference]: Without dead ends: 715 [2024-10-24 14:44:12,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:44:12,160 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 17 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:12,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4233 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:44:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-10-24 14:44:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 709. [2024-10-24 14:44:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.406754772393539) internal successors, (958), 698 states have internal predecessors, (958), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 14:44:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1001 transitions. [2024-10-24 14:44:12,183 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1001 transitions. Word has length 108 [2024-10-24 14:44:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:12,183 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1001 transitions. [2024-10-24 14:44:12,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 14:44:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1001 transitions. [2024-10-24 14:44:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 14:44:12,184 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:12,184 INFO L215 NwaCegarLoop]: trace histogram [6, 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 14:44:12,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 14:44:12,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:12,385 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:12,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash 366179433, now seen corresponding path program 1 times [2024-10-24 14:44:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:12,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684697008] [2024-10-24 14:44:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:12,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:44:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:13,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 14:44:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 14:44:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:44:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684697008] [2024-10-24 14:44:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684697008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:44:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688764633] [2024-10-24 14:44:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:13,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:13,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:44:13,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:44:13,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 14:44:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:13,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 14:44:13,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:44:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:44:13,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:44:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 14:44:22,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688764633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:44:22,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:44:22,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-10-24 14:44:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268034449] [2024-10-24 14:44:22,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:44:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 14:44:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:44:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 14:44:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=308, Unknown=2, NotChecked=0, Total=420 [2024-10-24 14:44:22,101 INFO L87 Difference]: Start difference. First operand 709 states and 1001 transitions. Second operand has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:44:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:23,745 INFO L93 Difference]: Finished difference Result 1311 states and 1871 transitions. [2024-10-24 14:44:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 14:44:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 108 [2024-10-24 14:44:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:23,750 INFO L225 Difference]: With dead ends: 1311 [2024-10-24 14:44:23,750 INFO L226 Difference]: Without dead ends: 720 [2024-10-24 14:44:23,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=287, Invalid=703, Unknown=2, NotChecked=0, Total=992 [2024-10-24 14:44:23,752 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 86 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:23,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 4500 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 14:44:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-10-24 14:44:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 718. [2024-10-24 14:44:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 690 states have (on average 1.401449275362319) internal successors, (967), 707 states have internal predecessors, (967), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 14:44:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1010 transitions. [2024-10-24 14:44:23,777 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1010 transitions. Word has length 108 [2024-10-24 14:44:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:23,777 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1010 transitions. [2024-10-24 14:44:23,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 14:44:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1010 transitions. [2024-10-24 14:44:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-24 14:44:23,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:23,779 INFO L215 NwaCegarLoop]: trace histogram [15, 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 14:44:23,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 14:44:23,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 14:44:23,983 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:23,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -155649083, now seen corresponding path program 2 times [2024-10-24 14:44:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650816357] [2024-10-24 14:44:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:24,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:44:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:25,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 14:44:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 14:44:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:44:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650816357] [2024-10-24 14:44:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650816357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:44:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823272199] [2024-10-24 14:44:25,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 14:44:25,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:44:25,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:44:25,042 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:44:25,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 14:44:25,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 14:44:25,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 14:44:25,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:44:25,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:44:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-24 14:44:25,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:44:25,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823272199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:44:25,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:44:25,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2024-10-24 14:44:25,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840697629] [2024-10-24 14:44:25,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:44:25,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:44:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:44:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:44:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:44:25,922 INFO L87 Difference]: Start difference. First operand 718 states and 1010 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 14:44:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:44:26,341 INFO L93 Difference]: Finished difference Result 1362 states and 1935 transitions. [2024-10-24 14:44:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:44:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 117 [2024-10-24 14:44:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:44:26,345 INFO L225 Difference]: With dead ends: 1362 [2024-10-24 14:44:26,346 INFO L226 Difference]: Without dead ends: 728 [2024-10-24 14:44:26,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:44:26,347 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 10 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:44:26,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2830 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:44:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-10-24 14:44:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 718. [2024-10-24 14:44:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 690 states have (on average 1.401449275362319) internal successors, (967), 707 states have internal predecessors, (967), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-24 14:44:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1010 transitions. [2024-10-24 14:44:26,371 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1010 transitions. Word has length 117 [2024-10-24 14:44:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:44:26,371 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1010 transitions. [2024-10-24 14:44:26,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 14:44:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1010 transitions. [2024-10-24 14:44:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-24 14:44:26,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:44:26,374 INFO L215 NwaCegarLoop]: trace histogram [15, 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, 1] [2024-10-24 14:44:26,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 14:44:26,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 14:44:26,576 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:44:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:44:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1946886635, now seen corresponding path program 1 times [2024-10-24 14:44:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:44:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229357893] [2024-10-24 14:44:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:44:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:44:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:44:27,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:44:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat