./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_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:52:24,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:52:24,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:52:24,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:52:24,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:52:24,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:52:24,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:52:24,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:52:24,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:52:24,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:52:24,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:52:24,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:52:24,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:52:24,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:52:24,154 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:52:24,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:52:24,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:52:24,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:52:24,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:52:24,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:52:24,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:52:24,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:52:24,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:52:24,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:52:24,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:52:24,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:52:24,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:52:24,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:52:24,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:52:24,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:52:24,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:52:24,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:52:24,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:52:24,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:52:24,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:52:24,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:52:24,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:52:24,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:52:24,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:52:24,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:52:24,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:52:24,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:52:24,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2024-10-24 14:52:24,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:52:24,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:52:24,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:52:24,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:52:24,428 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:52:24,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-10-24 14:52:25,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:52:26,171 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:52:26,172 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-10-24 14:52:26,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df1c8a7a3/862eaae665e24b6caa80e3e7fc877850/FLAGc08230c47 [2024-10-24 14:52:26,419 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df1c8a7a3/862eaae665e24b6caa80e3e7fc877850 [2024-10-24 14:52:26,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:52:26,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:52:26,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:52:26,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:52:26,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:52:26,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:52:26" (1/1) ... [2024-10-24 14:52:26,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a78baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:26, skipping insertion in model container [2024-10-24 14:52:26,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:52:26" (1/1) ... [2024-10-24 14:52:26,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:52:27,037 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_OAT_test6-1.i[44118,44131] [2024-10-24 14:52:27,051 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_OAT_test6-1.i[44660,44673] [2024-10-24 14:52:27,173 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_OAT_test6-1.i[56247,56260] [2024-10-24 14:52:27,174 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_OAT_test6-1.i[56368,56381] [2024-10-24 14:52:27,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:52:27,202 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:52:27,242 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_OAT_test6-1.i[44118,44131] [2024-10-24 14:52:27,245 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_OAT_test6-1.i[44660,44673] [2024-10-24 14:52:27,299 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_OAT_test6-1.i[56247,56260] [2024-10-24 14:52:27,304 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_OAT_test6-1.i[56368,56381] [2024-10-24 14:52:27,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:52:27,372 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:52:27,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27 WrapperNode [2024-10-24 14:52:27,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:52:27,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:52:27,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:52:27,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:52:27,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,494 INFO L138 Inliner]: procedures = 282, calls = 286, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1468 [2024-10-24 14:52:27,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:52:27,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:52:27,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:52:27,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:52:27,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,614 INFO L175 MemorySlicer]: Split 259 memory accesses to 4 slices as follows [2, 34, 3, 220]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 55 writes are split as follows [0, 4, 2, 49]. [2024-10-24 14:52:27,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:52:27,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:52:27,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:52:27,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:52:27,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (1/1) ... [2024-10-24 14:52:27,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:52:27,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:52:27,734 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 14:52:27,741 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 14:52:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:52:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-10-24 14:52:27,785 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-10-24 14:52:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:52:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:52:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:52:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 14:52:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:52:27,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:52:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:52:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:52:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:52:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 14:52:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:52:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-10-24 14:52:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-10-24 14:52:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:52:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:52:27,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 14:52:27,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:52:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:52:28,046 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:52:28,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:52:29,531 INFO L? ?]: Removed 333 outVars from TransFormulas that were not future-live. [2024-10-24 14:52:29,532 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:52:29,596 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:52:29,599 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-24 14:52:29,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:52:29 BoogieIcfgContainer [2024-10-24 14:52:29,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:52:29,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:52:29,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:52:29,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:52:29,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:52:26" (1/3) ... [2024-10-24 14:52:29,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d828c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:52:29, skipping insertion in model container [2024-10-24 14:52:29,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:27" (2/3) ... [2024-10-24 14:52:29,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d828c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:52:29, skipping insertion in model container [2024-10-24 14:52:29,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:52:29" (3/3) ... [2024-10-24 14:52:29,610 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2024-10-24 14:52:29,627 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:52:29,628 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 14:52:29,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:52:29,718 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;@33db9c10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:52:29,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 14:52:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 14:52:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 14:52:29,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:29,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:29,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:29,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 141968546, now seen corresponding path program 1 times [2024-10-24 14:52:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979020270] [2024-10-24 14:52:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:29,944 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 14:52:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979020270] [2024-10-24 14:52:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979020270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:29,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:29,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:52:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622675411] [2024-10-24 14:52:29,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:29,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:52:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:52:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:52:29,981 INFO L87 Difference]: Start difference. First operand has 424 states, 402 states have (on average 1.6144278606965174) internal successors, (649), 406 states have internal predecessors, (649), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:52:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:30,078 INFO L93 Difference]: Finished difference Result 845 states and 1360 transitions. [2024-10-24 14:52:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:52:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-24 14:52:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:30,095 INFO L225 Difference]: With dead ends: 845 [2024-10-24 14:52:30,095 INFO L226 Difference]: Without dead ends: 420 [2024-10-24 14:52:30,100 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 14:52:30,107 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:30,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:52:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-24 14:52:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-10-24 14:52:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 399 states have (on average 1.443609022556391) internal successors, (576), 404 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 601 transitions. [2024-10-24 14:52:30,194 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 601 transitions. Word has length 7 [2024-10-24 14:52:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:30,195 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 601 transitions. [2024-10-24 14:52:30,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:52:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 601 transitions. [2024-10-24 14:52:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:52:30,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:30,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:30,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:52:30,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:30,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 750725892, now seen corresponding path program 1 times [2024-10-24 14:52:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748377770] [2024-10-24 14:52:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:30,430 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 14:52:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748377770] [2024-10-24 14:52:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748377770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:52:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798702390] [2024-10-24 14:52:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:30,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:30,436 INFO L87 Difference]: Start difference. First operand 420 states and 601 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:52:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:30,656 INFO L93 Difference]: Finished difference Result 1027 states and 1478 transitions. [2024-10-24 14:52:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:52:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-24 14:52:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:30,665 INFO L225 Difference]: With dead ends: 1027 [2024-10-24 14:52:30,665 INFO L226 Difference]: Without dead ends: 818 [2024-10-24 14:52:30,666 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 14:52:30,668 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 554 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:30,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1826 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:52:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-24 14:52:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 422. [2024-10-24 14:52:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4413965087281795) internal successors, (578), 406 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 603 transitions. [2024-10-24 14:52:30,706 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 603 transitions. Word has length 9 [2024-10-24 14:52:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:30,707 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 603 transitions. [2024-10-24 14:52:30,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:52:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 603 transitions. [2024-10-24 14:52:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:52:30,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:30,709 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] [2024-10-24 14:52:30,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:52:30,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:30,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 992376086, now seen corresponding path program 1 times [2024-10-24 14:52:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925195969] [2024-10-24 14:52:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:31,035 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 14:52:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925195969] [2024-10-24 14:52:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925195969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:52:31,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068080159] [2024-10-24 14:52:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:31,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:31,038 INFO L87 Difference]: Start difference. First operand 422 states and 603 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:52:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:31,143 INFO L93 Difference]: Finished difference Result 844 states and 1206 transitions. [2024-10-24 14:52:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:52:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2024-10-24 14:52:31,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:31,147 INFO L225 Difference]: With dead ends: 844 [2024-10-24 14:52:31,149 INFO L226 Difference]: Without dead ends: 425 [2024-10-24 14:52:31,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:31,151 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 106 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:31,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1607 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:52:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-24 14:52:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-10-24 14:52:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4239401496259352) internal successors, (571), 406 states have internal predecessors, (571), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 596 transitions. [2024-10-24 14:52:31,167 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 596 transitions. Word has length 64 [2024-10-24 14:52:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:31,167 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 596 transitions. [2024-10-24 14:52:31,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:52:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 596 transitions. [2024-10-24 14:52:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:52:31,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:31,171 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] [2024-10-24 14:52:31,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:52:31,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 696880968, now seen corresponding path program 1 times [2024-10-24 14:52:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520815551] [2024-10-24 14:52:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:31,335 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 14:52:31,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:31,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520815551] [2024-10-24 14:52:31,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520815551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:31,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:52:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168652599] [2024-10-24 14:52:31,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:31,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:31,338 INFO L87 Difference]: Start difference. First operand 422 states and 596 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:52:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:31,433 INFO L93 Difference]: Finished difference Result 793 states and 1114 transitions. [2024-10-24 14:52:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:52:31,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2024-10-24 14:52:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:31,437 INFO L225 Difference]: With dead ends: 793 [2024-10-24 14:52:31,437 INFO L226 Difference]: Without dead ends: 374 [2024-10-24 14:52:31,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:31,441 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 9 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:31,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:52:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-10-24 14:52:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-10-24 14:52:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 353 states have (on average 1.3909348441926346) internal successors, (491), 358 states have internal predecessors, (491), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 516 transitions. [2024-10-24 14:52:31,459 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 516 transitions. Word has length 64 [2024-10-24 14:52:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:31,460 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 516 transitions. [2024-10-24 14:52:31,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:52:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 516 transitions. [2024-10-24 14:52:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 14:52:31,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:31,465 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] [2024-10-24 14:52:31,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:52:31,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:31,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2068688266, now seen corresponding path program 1 times [2024-10-24 14:52:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048312415] [2024-10-24 14:52:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:31,946 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 14:52:31,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:31,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048312415] [2024-10-24 14:52:31,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048312415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:31,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:31,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:52:31,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793250575] [2024-10-24 14:52:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:31,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:52:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:52:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:52:31,951 INFO L87 Difference]: Start difference. First operand 374 states and 516 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 14:52:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:32,349 INFO L93 Difference]: Finished difference Result 750 states and 1037 transitions. [2024-10-24 14:52:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:52:32,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2024-10-24 14:52:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:32,352 INFO L225 Difference]: With dead ends: 750 [2024-10-24 14:52:32,352 INFO L226 Difference]: Without dead ends: 379 [2024-10-24 14:52:32,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:32,354 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 10 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:32,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2171 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:52:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-24 14:52:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2024-10-24 14:52:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.388732394366197) internal successors, (493), 360 states have internal predecessors, (493), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 518 transitions. [2024-10-24 14:52:32,367 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 518 transitions. Word has length 64 [2024-10-24 14:52:32,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:32,367 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 518 transitions. [2024-10-24 14:52:32,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 14:52:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 518 transitions. [2024-10-24 14:52:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:52:32,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:32,371 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] [2024-10-24 14:52:32,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:52:32,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:32,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:32,374 INFO L85 PathProgramCache]: Analyzing trace with hash -437125107, now seen corresponding path program 1 times [2024-10-24 14:52:32,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971899358] [2024-10-24 14:52:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:52:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971899358] [2024-10-24 14:52:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971899358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:52:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378777424] [2024-10-24 14:52:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:32,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:32,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:32,677 INFO L87 Difference]: Start difference. First operand 376 states and 518 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:52:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:32,813 INFO L93 Difference]: Finished difference Result 749 states and 1033 transitions. [2024-10-24 14:52:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:52:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 65 [2024-10-24 14:52:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:32,816 INFO L225 Difference]: With dead ends: 749 [2024-10-24 14:52:32,816 INFO L226 Difference]: Without dead ends: 376 [2024-10-24 14:52:32,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:32,819 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 13 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:32,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1368 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:52:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-24 14:52:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-24 14:52:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 355 states have (on average 1.3859154929577464) internal successors, (492), 360 states have internal predecessors, (492), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 517 transitions. [2024-10-24 14:52:32,835 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 517 transitions. Word has length 65 [2024-10-24 14:52:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:32,835 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 517 transitions. [2024-10-24 14:52:32,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:52:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 517 transitions. [2024-10-24 14:52:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 14:52:32,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:32,838 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] [2024-10-24 14:52:32,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:52:32,839 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:32,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2023236473, now seen corresponding path program 1 times [2024-10-24 14:52:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:32,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631354695] [2024-10-24 14:52:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:32,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:33,086 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 14:52:33,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:33,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631354695] [2024-10-24 14:52:33,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631354695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:33,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:33,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:52:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677100088] [2024-10-24 14:52:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:33,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:52:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:52:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:33,089 INFO L87 Difference]: Start difference. First operand 376 states and 517 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 14:52:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:33,449 INFO L93 Difference]: Finished difference Result 754 states and 1039 transitions. [2024-10-24 14:52:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:52:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 65 [2024-10-24 14:52:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:33,452 INFO L225 Difference]: With dead ends: 754 [2024-10-24 14:52:33,452 INFO L226 Difference]: Without dead ends: 381 [2024-10-24 14:52:33,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:33,454 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 10 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:33,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2605 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-24 14:52:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2024-10-24 14:52:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 359 states have (on average 1.384401114206128) internal successors, (497), 364 states have internal predecessors, (497), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 522 transitions. [2024-10-24 14:52:33,470 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 522 transitions. Word has length 65 [2024-10-24 14:52:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:33,470 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 522 transitions. [2024-10-24 14:52:33,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 14:52:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 522 transitions. [2024-10-24 14:52:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:52:33,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:33,473 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] [2024-10-24 14:52:33,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:52:33,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:33,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash 946071343, now seen corresponding path program 1 times [2024-10-24 14:52:33,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:33,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908289838] [2024-10-24 14:52:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:33,741 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 14:52:33,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908289838] [2024-10-24 14:52:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908289838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:33,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:52:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428461125] [2024-10-24 14:52:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:33,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:52:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:33,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:52:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:52:33,744 INFO L87 Difference]: Start difference. First operand 380 states and 522 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 14:52:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:33,971 INFO L93 Difference]: Finished difference Result 760 states and 1046 transitions. [2024-10-24 14:52:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:52:33,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 66 [2024-10-24 14:52:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:33,974 INFO L225 Difference]: With dead ends: 760 [2024-10-24 14:52:33,974 INFO L226 Difference]: Without dead ends: 383 [2024-10-24 14:52:33,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:52:33,976 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 4 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:33,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1788 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:52:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-24 14:52:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-10-24 14:52:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.3812154696132597) internal successors, (500), 367 states have internal predecessors, (500), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 525 transitions. [2024-10-24 14:52:33,991 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 525 transitions. Word has length 66 [2024-10-24 14:52:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:33,993 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 525 transitions. [2024-10-24 14:52:33,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 14:52:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 525 transitions. [2024-10-24 14:52:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:52:33,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:33,995 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] [2024-10-24 14:52:33,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 14:52:33,995 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:33,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1827898922, now seen corresponding path program 1 times [2024-10-24 14:52:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6252465] [2024-10-24 14:52:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:34,376 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 14:52:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6252465] [2024-10-24 14:52:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6252465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:34,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:34,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:52:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505971649] [2024-10-24 14:52:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:34,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:52:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:52:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:34,379 INFO L87 Difference]: Start difference. First operand 383 states and 525 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 14:52:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:34,904 INFO L93 Difference]: Finished difference Result 776 states and 1068 transitions. [2024-10-24 14:52:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:52:34,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 66 [2024-10-24 14:52:34,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:34,907 INFO L225 Difference]: With dead ends: 776 [2024-10-24 14:52:34,907 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:52:34,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:52:34,909 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 30 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:34,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3520 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:52:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2024-10-24 14:52:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 372 states have (on average 1.381720430107527) internal successors, (514), 377 states have internal predecessors, (514), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 539 transitions. [2024-10-24 14:52:34,920 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 539 transitions. Word has length 66 [2024-10-24 14:52:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:34,920 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 539 transitions. [2024-10-24 14:52:34,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 14:52:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 539 transitions. [2024-10-24 14:52:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 14:52:34,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:34,922 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] [2024-10-24 14:52:34,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:52:34,922 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:34,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:34,926 INFO L85 PathProgramCache]: Analyzing trace with hash -215227921, now seen corresponding path program 1 times [2024-10-24 14:52:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:34,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639117224] [2024-10-24 14:52:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:35,407 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 14:52:35,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639117224] [2024-10-24 14:52:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639117224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:52:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953558104] [2024-10-24 14:52:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:52:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:52:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:52:35,410 INFO L87 Difference]: Start difference. First operand 393 states and 539 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 14:52:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:35,858 INFO L93 Difference]: Finished difference Result 786 states and 1080 transitions. [2024-10-24 14:52:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:52:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 66 [2024-10-24 14:52:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:35,861 INFO L225 Difference]: With dead ends: 786 [2024-10-24 14:52:35,861 INFO L226 Difference]: Without dead ends: 396 [2024-10-24 14:52:35,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:52:35,862 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 23 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:35,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3083 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:52:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-24 14:52:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-10-24 14:52:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:52:35,874 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 66 [2024-10-24 14:52:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:35,874 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:52:35,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 14:52:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:52:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:52:35,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:35,875 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] [2024-10-24 14:52:35,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:52:35,875 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:35,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1927888144, now seen corresponding path program 1 times [2024-10-24 14:52:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:35,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144076294] [2024-10-24 14:52:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:36,129 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 14:52:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144076294] [2024-10-24 14:52:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144076294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:52:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884427027] [2024-10-24 14:52:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:36,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:52:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:52:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:36,130 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 14:52:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:36,542 INFO L93 Difference]: Finished difference Result 794 states and 1089 transitions. [2024-10-24 14:52:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:52:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 67 [2024-10-24 14:52:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:36,545 INFO L225 Difference]: With dead ends: 794 [2024-10-24 14:52:36,545 INFO L226 Difference]: Without dead ends: 401 [2024-10-24 14:52:36,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:52:36,547 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 9 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:36,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2611 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-10-24 14:52:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-10-24 14:52:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 375 states have (on average 1.3786666666666667) internal successors, (517), 380 states have internal predecessors, (517), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 542 transitions. [2024-10-24 14:52:36,558 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 542 transitions. Word has length 67 [2024-10-24 14:52:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:36,559 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 542 transitions. [2024-10-24 14:52:36,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 14:52:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 542 transitions. [2024-10-24 14:52:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:52:36,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:36,560 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] [2024-10-24 14:52:36,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 14:52:36,560 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:36,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1191157692, now seen corresponding path program 1 times [2024-10-24 14:52:36,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:36,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654608945] [2024-10-24 14:52:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:52:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654608945] [2024-10-24 14:52:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654608945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:37,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:37,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:52:37,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505062778] [2024-10-24 14:52:37,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:37,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:52:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:37,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:52:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:37,141 INFO L87 Difference]: Start difference. First operand 396 states and 542 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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 14:52:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:38,042 INFO L93 Difference]: Finished difference Result 1144 states and 1578 transitions. [2024-10-24 14:52:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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 67 [2024-10-24 14:52:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:38,047 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:52:38,047 INFO L226 Difference]: Without dead ends: 751 [2024-10-24 14:52:38,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:52:38,048 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 598 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:38,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2935 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:52:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-10-24 14:52:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 427. [2024-10-24 14:52:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 406 states have (on average 1.3497536945812807) internal successors, (548), 411 states have internal predecessors, (548), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 573 transitions. [2024-10-24 14:52:38,066 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 573 transitions. Word has length 67 [2024-10-24 14:52:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:38,066 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 573 transitions. [2024-10-24 14:52:38,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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 14:52:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 573 transitions. [2024-10-24 14:52:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:52:38,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:38,067 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] [2024-10-24 14:52:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:52:38,068 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1668996667, now seen corresponding path program 1 times [2024-10-24 14:52:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230371851] [2024-10-24 14:52:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:38,335 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 14:52:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230371851] [2024-10-24 14:52:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230371851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:52:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654205896] [2024-10-24 14:52:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:52:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:52:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:38,337 INFO L87 Difference]: Start difference. First operand 427 states and 573 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 14:52:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:38,706 INFO L93 Difference]: Finished difference Result 830 states and 1126 transitions. [2024-10-24 14:52:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:52:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 68 [2024-10-24 14:52:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:38,709 INFO L225 Difference]: With dead ends: 830 [2024-10-24 14:52:38,709 INFO L226 Difference]: Without dead ends: 437 [2024-10-24 14:52:38,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:38,711 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 16 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:38,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3105 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-10-24 14:52:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2024-10-24 14:52:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:52:38,726 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:52:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:38,726 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:52:38,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 14:52:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:52:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 14:52:38,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:38,727 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] [2024-10-24 14:52:38,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 14:52:38,727 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:38,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash -488729825, now seen corresponding path program 1 times [2024-10-24 14:52:38,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:38,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173908700] [2024-10-24 14:52:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:38,997 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 14:52:38,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:38,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173908700] [2024-10-24 14:52:38,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173908700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:38,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:38,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:52:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181241635] [2024-10-24 14:52:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:38,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:52:38,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:38,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:52:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:38,999 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 14:52:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:39,515 INFO L93 Difference]: Finished difference Result 836 states and 1134 transitions. [2024-10-24 14:52:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:39,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 68 [2024-10-24 14:52:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:39,519 INFO L225 Difference]: With dead ends: 836 [2024-10-24 14:52:39,519 INFO L226 Difference]: Without dead ends: 440 [2024-10-24 14:52:39,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:52:39,520 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 26 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:39,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3456 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-10-24 14:52:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 430. [2024-10-24 14:52:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 414 states have internal predecessors, (552), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-10-24 14:52:39,539 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 68 [2024-10-24 14:52:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:39,540 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-10-24 14:52:39,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 14:52:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-10-24 14:52:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:52:39,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:39,541 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] [2024-10-24 14:52:39,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:52:39,541 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:39,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -29765440, now seen corresponding path program 1 times [2024-10-24 14:52:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327222786] [2024-10-24 14:52:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:39,899 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 14:52:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327222786] [2024-10-24 14:52:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327222786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:39,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:52:39,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364483723] [2024-10-24 14:52:39,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:39,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:52:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:52:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:39,902 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 14:52:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:40,440 INFO L93 Difference]: Finished difference Result 842 states and 1143 transitions. [2024-10-24 14:52:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 69 [2024-10-24 14:52:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:40,443 INFO L225 Difference]: With dead ends: 842 [2024-10-24 14:52:40,443 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:52:40,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:52:40,446 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 22 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:40,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3511 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:52:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2024-10-24 14:52:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 419 states have (on average 1.3460620525059666) internal successors, (564), 424 states have internal predecessors, (564), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 589 transitions. [2024-10-24 14:52:40,462 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 589 transitions. Word has length 69 [2024-10-24 14:52:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:40,462 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 589 transitions. [2024-10-24 14:52:40,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 14:52:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 589 transitions. [2024-10-24 14:52:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:52:40,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:40,463 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] [2024-10-24 14:52:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 14:52:40,464 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:40,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1800190044, now seen corresponding path program 1 times [2024-10-24 14:52:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115766637] [2024-10-24 14:52:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:40,776 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 14:52:40,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115766637] [2024-10-24 14:52:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115766637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:40,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:40,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:52:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6887379] [2024-10-24 14:52:40,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:40,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:52:40,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:52:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:40,781 INFO L87 Difference]: Start difference. First operand 440 states and 589 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 14:52:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:41,329 INFO L93 Difference]: Finished difference Result 862 states and 1167 transitions. [2024-10-24 14:52:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 69 [2024-10-24 14:52:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:41,333 INFO L225 Difference]: With dead ends: 862 [2024-10-24 14:52:41,333 INFO L226 Difference]: Without dead ends: 456 [2024-10-24 14:52:41,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:41,336 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 13 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:41,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3919 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-10-24 14:52:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2024-10-24 14:52:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3459715639810426) internal successors, (568), 427 states have internal predecessors, (568), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 593 transitions. [2024-10-24 14:52:41,352 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 593 transitions. Word has length 69 [2024-10-24 14:52:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:41,352 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 593 transitions. [2024-10-24 14:52:41,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 14:52:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 593 transitions. [2024-10-24 14:52:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:52:41,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:41,354 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] [2024-10-24 14:52:41,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:52:41,354 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:41,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 302137308, now seen corresponding path program 1 times [2024-10-24 14:52:41,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:41,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915825811] [2024-10-24 14:52:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:41,655 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 14:52:41,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:41,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915825811] [2024-10-24 14:52:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915825811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:41,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:52:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446496541] [2024-10-24 14:52:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:41,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:52:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:52:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:41,659 INFO L87 Difference]: Start difference. First operand 443 states and 593 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 14:52:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:41,985 INFO L93 Difference]: Finished difference Result 857 states and 1157 transitions. [2024-10-24 14:52:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:52:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 69 [2024-10-24 14:52:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:41,988 INFO L225 Difference]: With dead ends: 857 [2024-10-24 14:52:41,988 INFO L226 Difference]: Without dead ends: 448 [2024-10-24 14:52:41,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:41,990 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 7 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:41,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2635 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-10-24 14:52:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2024-10-24 14:52:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 422 states have (on average 1.3436018957345972) internal successors, (567), 427 states have internal predecessors, (567), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 592 transitions. [2024-10-24 14:52:42,004 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 592 transitions. Word has length 69 [2024-10-24 14:52:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:42,004 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 592 transitions. [2024-10-24 14:52:42,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 14:52:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 592 transitions. [2024-10-24 14:52:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 14:52:42,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:42,005 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] [2024-10-24 14:52:42,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 14:52:42,006 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:42,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1914808309, now seen corresponding path program 1 times [2024-10-24 14:52:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:42,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623395601] [2024-10-24 14:52:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:42,351 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 14:52:42,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623395601] [2024-10-24 14:52:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623395601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:52:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107275538] [2024-10-24 14:52:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:42,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:52:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:42,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:52:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:42,355 INFO L87 Difference]: Start difference. First operand 443 states and 592 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 14:52:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:42,722 INFO L93 Difference]: Finished difference Result 855 states and 1155 transitions. [2024-10-24 14:52:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:52:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 69 [2024-10-24 14:52:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:42,724 INFO L225 Difference]: With dead ends: 855 [2024-10-24 14:52:42,725 INFO L226 Difference]: Without dead ends: 446 [2024-10-24 14:52:42,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:52:42,726 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 4 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:42,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2594 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:52:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-24 14:52:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-10-24 14:52:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 425 states have (on average 1.3411764705882352) internal successors, (570), 430 states have internal predecessors, (570), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 595 transitions. [2024-10-24 14:52:42,743 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 595 transitions. Word has length 69 [2024-10-24 14:52:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:42,743 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 595 transitions. [2024-10-24 14:52:42,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 14:52:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 595 transitions. [2024-10-24 14:52:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:52:42,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:42,744 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] [2024-10-24 14:52:42,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:52:42,744 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:42,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:42,745 INFO L85 PathProgramCache]: Analyzing trace with hash 48213054, now seen corresponding path program 1 times [2024-10-24 14:52:42,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:42,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264507716] [2024-10-24 14:52:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:42,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:43,177 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 14:52:43,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264507716] [2024-10-24 14:52:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264507716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:52:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177970529] [2024-10-24 14:52:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:43,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:52:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:43,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:52:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:43,209 INFO L87 Difference]: Start difference. First operand 446 states and 595 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 14:52:47,464 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 [] [2024-10-24 14:52:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:47,784 INFO L93 Difference]: Finished difference Result 870 states and 1174 transitions. [2024-10-24 14:52:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 70 [2024-10-24 14:52:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:47,787 INFO L225 Difference]: With dead ends: 870 [2024-10-24 14:52:47,787 INFO L226 Difference]: Without dead ends: 458 [2024-10-24 14:52:47,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:47,789 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 9 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:47,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3903 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-24 14:52:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-10-24 14:52:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 450. [2024-10-24 14:52:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.3403263403263403) internal successors, (575), 434 states have internal predecessors, (575), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 600 transitions. [2024-10-24 14:52:47,806 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 600 transitions. Word has length 70 [2024-10-24 14:52:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:47,806 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 600 transitions. [2024-10-24 14:52:47,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 14:52:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 600 transitions. [2024-10-24 14:52:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:52:47,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:47,807 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] [2024-10-24 14:52:47,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 14:52:47,808 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:47,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1976786731, now seen corresponding path program 1 times [2024-10-24 14:52:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:47,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145067032] [2024-10-24 14:52:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:48,133 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 14:52:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145067032] [2024-10-24 14:52:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145067032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:52:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263543623] [2024-10-24 14:52:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:48,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:52:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:52:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:52:48,135 INFO L87 Difference]: Start difference. First operand 450 states and 600 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 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 14:52:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:48,718 INFO L93 Difference]: Finished difference Result 879 states and 1184 transitions. [2024-10-24 14:52:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 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 70 [2024-10-24 14:52:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:48,722 INFO L225 Difference]: With dead ends: 879 [2024-10-24 14:52:48,722 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:52:48,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:52:48,724 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 22 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:48,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4401 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:52:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 453. [2024-10-24 14:52:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 432 states have (on average 1.337962962962963) internal successors, (578), 437 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 603 transitions. [2024-10-24 14:52:48,745 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 603 transitions. Word has length 70 [2024-10-24 14:52:48,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:48,745 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 603 transitions. [2024-10-24 14:52:48,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 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 14:52:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 603 transitions. [2024-10-24 14:52:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:52:48,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:48,746 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] [2024-10-24 14:52:48,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 14:52:48,747 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:48,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 942258210, now seen corresponding path program 1 times [2024-10-24 14:52:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7190076] [2024-10-24 14:52:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:49,268 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 14:52:49,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:49,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7190076] [2024-10-24 14:52:49,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7190076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:49,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:49,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:52:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395533944] [2024-10-24 14:52:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:49,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:52:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:52:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:52:49,271 INFO L87 Difference]: Start difference. First operand 453 states and 603 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 14:52:52,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:52:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:53,059 INFO L93 Difference]: Finished difference Result 878 states and 1180 transitions. [2024-10-24 14:52:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 70 [2024-10-24 14:52:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:53,063 INFO L225 Difference]: With dead ends: 878 [2024-10-24 14:52:53,063 INFO L226 Difference]: Without dead ends: 459 [2024-10-24 14:52:53,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:52:53,064 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 33 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:53,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3426 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-24 14:52:53,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-24 14:52:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 454. [2024-10-24 14:52:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 433 states have (on average 1.3371824480369514) internal successors, (579), 438 states have internal predecessors, (579), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 604 transitions. [2024-10-24 14:52:53,080 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 604 transitions. Word has length 70 [2024-10-24 14:52:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:53,081 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 604 transitions. [2024-10-24 14:52:53,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 14:52:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 604 transitions. [2024-10-24 14:52:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:52:53,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:53,082 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] [2024-10-24 14:52:53,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 14:52:53,082 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:53,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash -894204710, now seen corresponding path program 1 times [2024-10-24 14:52:53,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:53,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380993244] [2024-10-24 14:52:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:53,355 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 14:52:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380993244] [2024-10-24 14:52:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380993244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 14:52:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730236505] [2024-10-24 14:52:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:53,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:52:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:52:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:52:53,358 INFO L87 Difference]: Start difference. First operand 454 states and 604 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 14:52:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:53,905 INFO L93 Difference]: Finished difference Result 883 states and 1187 transitions. [2024-10-24 14:52:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:52:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 70 [2024-10-24 14:52:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:53,910 INFO L225 Difference]: With dead ends: 883 [2024-10-24 14:52:53,910 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 14:52:53,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:52:53,911 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 22 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:53,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3456 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 14:52:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 451. [2024-10-24 14:52:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 430 states have (on average 1.3395348837209302) internal successors, (576), 435 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 14:52:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 601 transitions. [2024-10-24 14:52:53,928 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 601 transitions. Word has length 70 [2024-10-24 14:52:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:53,928 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 601 transitions. [2024-10-24 14:52:53,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 14:52:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 601 transitions. [2024-10-24 14:52:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 14:52:53,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:53,930 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] [2024-10-24 14:52:53,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 14:52:53,930 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 14:52:53,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1497195914, now seen corresponding path program 1 times [2024-10-24 14:52:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659658472] [2024-10-24 14:52:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:53:10,902 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288)) (.cse0 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192))) (and (= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (<= 4408680405129836981 (+ (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059) (* (div (+ (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|) 8817360810260198248 .cse1 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* (- 1) .cse0)) 4294967296) 2147483648))))) is different from false [2024-10-24 14:53:10,971 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 14:53:10,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:53:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659658472] [2024-10-24 14:53:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659658472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:53:10,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:53:10,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:53:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493989207] [2024-10-24 14:53:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:53:10,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:53:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:53:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:53:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2024-10-24 14:53:10,973 INFO L87 Difference]: Start difference. First operand 451 states and 601 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 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 14:53:15,230 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 [] [2024-10-24 14:53:19,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:23,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:27,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:31,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:35,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:39,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-24 14:53:43,739 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 []