./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.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.graphml --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 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 11:03:14,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 11:03:14,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 11:03:14,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 11:03:14,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 11:03:14,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 11:03:14,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 11:03:14,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 11:03:14,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 11:03:14,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 11:03:14,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 11:03:14,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 11:03:14,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 11:03:14,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 11:03:14,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 11:03:14,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 11:03:14,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 11:03:14,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 11:03:14,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 11:03:14,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 11:03:14,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 11:03:14,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 11:03:14,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 11:03:14,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 11:03:14,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 11:03:14,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 11:03:14,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 11:03:14,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 11:03:14,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 11:03:14,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 11:03:14,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 11:03:14,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 11:03:14,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 11:03:14,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 11:03:14,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 11:03:14,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 11:03:14,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 11:03:14,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 11:03:14,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 11:03:14,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 11:03:14,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 11:03:14,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 11:03:14,426 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 11:03:14,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 11:03:14,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 11:03:14,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 11:03:14,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 11:03:14,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 11:03:14,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 11:03:14,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 11:03:14,430 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 11:03:14,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 11:03:14,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 11:03:14,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 11:03:14,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 11:03:14,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 11:03:14,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 11:03:14,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 11:03:14,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 11:03:14,432 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 11:03:14,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 11:03:14,432 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 11:03:14,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 11:03:14,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 11:03:14,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 11:03:14,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 11:03:14,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 11:03:14,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 11:03:14,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 11:03:14,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 11:03:14,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 11:03:14,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 11:03:14,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 11:03:14,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 11:03:14,435 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 11:03:14,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 11:03:14,436 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 11:03:14,436 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 [2023-02-15 11:03:14,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 11:03:14,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 11:03:14,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 11:03:14,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 11:03:14,660 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 11:03:14,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2023-02-15 11:03:15,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 11:03:15,896 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 11:03:15,897 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2023-02-15 11:03:15,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d29292c47/b0a6c06767184d6486f5feed64996010/FLAG90e7cc110 [2023-02-15 11:03:15,912 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d29292c47/b0a6c06767184d6486f5feed64996010 [2023-02-15 11:03:15,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 11:03:15,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 11:03:15,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 11:03:15,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 11:03:15,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 11:03:15,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:03:15" (1/1) ... [2023-02-15 11:03:15,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8de5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:15, skipping insertion in model container [2023-02-15 11:03:15,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:03:15" (1/1) ... [2023-02-15 11:03:15,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 11:03:15,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 11:03:16,063 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2023-02-15 11:03:16,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 11:03:16,083 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 11:03:16,093 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2023-02-15 11:03:16,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 11:03:16,111 INFO L208 MainTranslator]: Completed translation [2023-02-15 11:03:16,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16 WrapperNode [2023-02-15 11:03:16,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 11:03:16,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 11:03:16,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 11:03:16,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 11:03:16,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,139 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2023-02-15 11:03:16,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 11:03:16,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 11:03:16,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 11:03:16,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 11:03:16,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 11:03:16,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 11:03:16,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 11:03:16,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 11:03:16,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (1/1) ... [2023-02-15 11:03:16,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 11:03:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:16,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 11:03:16,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 11:03:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 11:03:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 11:03:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 11:03:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 11:03:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 11:03:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 11:03:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 11:03:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 11:03:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 11:03:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 11:03:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 11:03:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 11:03:16,318 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 11:03:16,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 11:03:16,556 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 11:03:16,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 11:03:16,562 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 11:03:16,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:03:16 BoogieIcfgContainer [2023-02-15 11:03:16,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 11:03:16,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 11:03:16,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 11:03:16,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 11:03:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:03:15" (1/3) ... [2023-02-15 11:03:16,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ccd4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:03:16, skipping insertion in model container [2023-02-15 11:03:16,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:03:16" (2/3) ... [2023-02-15 11:03:16,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ccd4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:03:16, skipping insertion in model container [2023-02-15 11:03:16,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:03:16" (3/3) ... [2023-02-15 11:03:16,593 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2023-02-15 11:03:16,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 11:03:16,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 11:03:16,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 11:03:16,678 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1edbc0aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 11:03:16,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 11:03:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 11:03:16,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:16,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:16,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash -116286682, now seen corresponding path program 1 times [2023-02-15 11:03:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:16,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672751054] [2023-02-15 11:03:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:16,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 11:03:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 11:03:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:16,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:16,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672751054] [2023-02-15 11:03:16,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672751054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 11:03:16,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 11:03:16,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 11:03:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007837761] [2023-02-15 11:03:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 11:03:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 11:03:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 11:03:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 11:03:17,009 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:17,050 INFO L93 Difference]: Finished difference Result 60 states and 87 transitions. [2023-02-15 11:03:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 11:03:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-15 11:03:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:17,058 INFO L225 Difference]: With dead ends: 60 [2023-02-15 11:03:17,058 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 11:03:17,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 11:03:17,063 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:17,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 11:03:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 11:03:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-15 11:03:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-02-15 11:03:17,093 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2023-02-15 11:03:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:17,094 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-02-15 11:03:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-02-15 11:03:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 11:03:17,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:17,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 11:03:17,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1691769640, now seen corresponding path program 1 times [2023-02-15 11:03:17,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:17,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057598838] [2023-02-15 11:03:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:17,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-15 11:03:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 11:03:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:17,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057598838] [2023-02-15 11:03:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057598838] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:17,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219488192] [2023-02-15 11:03:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:17,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:17,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:17,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:17,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 11:03:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:17,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 11:03:17,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 11:03:17,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 11:03:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219488192] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 11:03:17,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 11:03:17,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2023-02-15 11:03:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490030144] [2023-02-15 11:03:17,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 11:03:17,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 11:03:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 11:03:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-15 11:03:17,700 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:17,804 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-15 11:03:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 11:03:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-02-15 11:03:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:17,806 INFO L225 Difference]: With dead ends: 37 [2023-02-15 11:03:17,806 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 11:03:17,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-15 11:03:17,808 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 100 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 11:03:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 11:03:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-15 11:03:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-15 11:03:17,816 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2023-02-15 11:03:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:17,817 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-15 11:03:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-15 11:03:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 11:03:17,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:17,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:17,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 11:03:18,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:18,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash -789252821, now seen corresponding path program 1 times [2023-02-15 11:03:18,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:18,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396953761] [2023-02-15 11:03:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-15 11:03:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 11:03:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396953761] [2023-02-15 11:03:18,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396953761] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477479641] [2023-02-15 11:03:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:18,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:18,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 11:03:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 11:03:18,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:18,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 11:03:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477479641] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 11:03:18,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 11:03:18,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 11:03:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719207922] [2023-02-15 11:03:18,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 11:03:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 11:03:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 11:03:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-15 11:03:18,325 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 11:03:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:18,372 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-15 11:03:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 11:03:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-15 11:03:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:18,375 INFO L225 Difference]: With dead ends: 65 [2023-02-15 11:03:18,377 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 11:03:18,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-15 11:03:18,381 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:18,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 11:03:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 11:03:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 11:03:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-02-15 11:03:18,398 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 24 [2023-02-15 11:03:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:18,398 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-02-15 11:03:18,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 11:03:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-02-15 11:03:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 11:03:18,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:18,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:18,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 11:03:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 11:03:18,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash -821774159, now seen corresponding path program 2 times [2023-02-15 11:03:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:18,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39420920] [2023-02-15 11:03:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 11:03:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 11:03:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:03:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:18,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39420920] [2023-02-15 11:03:18,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39420920] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:18,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34860851] [2023-02-15 11:03:18,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 11:03:18,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:18,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:18,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 11:03:18,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 11:03:18,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 11:03:18,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 11:03:18,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-02-15 11:03:18,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 11:03:18,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34860851] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 11:03:18,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 11:03:18,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-02-15 11:03:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196748019] [2023-02-15 11:03:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 11:03:18,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 11:03:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 11:03:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 11:03:18,933 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:18,942 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2023-02-15 11:03:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 11:03:18,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-02-15 11:03:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:18,950 INFO L225 Difference]: With dead ends: 53 [2023-02-15 11:03:18,950 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 11:03:18,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 11:03:18,953 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:18,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 11:03:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 11:03:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-02-15 11:03:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-02-15 11:03:18,967 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2023-02-15 11:03:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:18,967 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-02-15 11:03:18,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:03:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-02-15 11:03:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 11:03:18,970 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:18,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:18,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 11:03:19,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:19,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2084528089, now seen corresponding path program 1 times [2023-02-15 11:03:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:19,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503800017] [2023-02-15 11:03:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 11:03:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 11:03:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-15 11:03:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-15 11:03:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 11:03:19,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503800017] [2023-02-15 11:03:19,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503800017] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640230679] [2023-02-15 11:03:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:19,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:19,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 11:03:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 11:03:19,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 11:03:19,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 11:03:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 11:03:19,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640230679] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 11:03:19,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 11:03:19,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-15 11:03:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668698124] [2023-02-15 11:03:19,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 11:03:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 11:03:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 11:03:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-15 11:03:19,557 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 11:03:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:19,957 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-02-15 11:03:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 11:03:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 43 [2023-02-15 11:03:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:19,961 INFO L225 Difference]: With dead ends: 79 [2023-02-15 11:03:19,961 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 11:03:19,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-02-15 11:03:19,962 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:19,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 198 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 11:03:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 11:03:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-15 11:03:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2023-02-15 11:03:19,968 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 43 [2023-02-15 11:03:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2023-02-15 11:03:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 11:03:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2023-02-15 11:03:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 11:03:19,969 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:19,969 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:19,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 11:03:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:20,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -46837221, now seen corresponding path program 2 times [2023-02-15 11:03:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843117278] [2023-02-15 11:03:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-15 11:03:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-15 11:03:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 11:03:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 11:03:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 11:03:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843117278] [2023-02-15 11:03:20,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843117278] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895715801] [2023-02-15 11:03:20,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 11:03:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:20,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:20,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 11:03:20,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 11:03:20,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 11:03:20,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-15 11:03:20,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 11:03:20,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 11:03:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 11:03:21,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895715801] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 11:03:21,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 11:03:21,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-15 11:03:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296016633] [2023-02-15 11:03:21,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 11:03:21,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 11:03:21,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 11:03:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-02-15 11:03:21,222 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 11:03:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:25,099 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-02-15 11:03:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 11:03:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 55 [2023-02-15 11:03:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:25,101 INFO L225 Difference]: With dead ends: 103 [2023-02-15 11:03:25,101 INFO L226 Difference]: Without dead ends: 75 [2023-02-15 11:03:25,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 11:03:25,103 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:25,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 338 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 11:03:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-15 11:03:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-02-15 11:03:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 11:03:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2023-02-15 11:03:25,111 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 55 [2023-02-15 11:03:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:25,111 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2023-02-15 11:03:25,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 11:03:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2023-02-15 11:03:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-15 11:03:25,113 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:03:25,113 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:03:25,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 11:03:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:25,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:03:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:03:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1782199293, now seen corresponding path program 3 times [2023-02-15 11:03:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:03:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124908943] [2023-02-15 11:03:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:03:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:03:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 11:03:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-15 11:03:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-15 11:03:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-02-15 11:03:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:03:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 11:03:26,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:03:26,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124908943] [2023-02-15 11:03:26,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124908943] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 11:03:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423763185] [2023-02-15 11:03:26,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 11:03:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:03:26,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:03:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 11:03:26,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-15 11:03:26,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 11:03:26,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 11:03:26,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:03:27,197 INFO L321 Elim1Store]: treesize reduction 120, result has 5.5 percent of original size [2023-02-15 11:03:27,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 58 [2023-02-15 11:03:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-02-15 11:03:27,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 11:03:34,836 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 11:03:41,487 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 11:03:41,662 INFO L321 Elim1Store]: treesize reduction 171, result has 21.2 percent of original size [2023-02-15 11:03:41,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 336 treesize of output 189 [2023-02-15 11:03:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-02-15 11:03:42,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423763185] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 11:03:42,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 11:03:42,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 13] total 46 [2023-02-15 11:03:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123890505] [2023-02-15 11:03:42,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 11:03:42,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-15 11:03:42,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:03:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-15 11:03:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1927, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 11:03:42,681 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-15 11:03:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:03:45,519 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2023-02-15 11:03:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-15 11:03:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 79 [2023-02-15 11:03:45,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:03:45,522 INFO L225 Difference]: With dead ends: 113 [2023-02-15 11:03:45,522 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 11:03:45,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=214, Invalid=2648, Unknown=0, NotChecked=0, Total=2862 [2023-02-15 11:03:45,524 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 11:03:45,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 178 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-15 11:03:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 11:03:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 11:03:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-02-15 11:03:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 11:03:45,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2023-02-15 11:03:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:03:45,525 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 11:03:45,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-15 11:03:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 11:03:45,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 11:03:45,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 11:03:45,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 11:03:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:03:45,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-02-15 11:03:45,964 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 63) no Hoare annotation was computed. [2023-02-15 11:03:45,964 INFO L895 garLoopResultBuilder]: At program point L49-1(lines 49 55) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~loop_entered~0#1| 0) (< (mod |ULTIMATE.start_main_~index2~0#1| 4294967296) 100000)) (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)))))) [2023-02-15 11:03:45,964 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 34 65) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 65) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (or (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)))) (let ((.cse3 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse4 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (= (mod (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse3 4))) 4294967296) (mod (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse4 4))) 4294967296)) (< .cse4 100000) (< .cse3 .cse4))))) [2023-02-15 11:03:45,965 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (< .cse0 100000) (< (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) .cse0))) [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296))) (= (mod (+ |ULTIMATE.start_main_#t~mem9#1| (* 4294967295 |ULTIMATE.start_main_#t~mem10#1|)) 4294967296) 0))) [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-02-15 11:03:45,965 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296)) (.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse1 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296))) (and (< .cse0 100000) (< .cse1 .cse0) (= (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse0 4))) |ULTIMATE.start_main_#t~mem6#1|) (= |ULTIMATE.start_main_#t~mem5#1| (select .cse2 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse1 4)))))) [2023-02-15 11:03:45,965 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (= |ULTIMATE.start_main_~loop_entered~0#1| 0) [2023-02-15 11:03:45,966 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 22) the Hoare annotation is: true [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 29) the Hoare annotation is: true [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2023-02-15 11:03:45,966 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2023-02-15 11:03:45,969 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-02-15 11:03:45,971 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 11:03:45,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:03:45 BoogieIcfgContainer [2023-02-15 11:03:45,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 11:03:45,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 11:03:45,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 11:03:45,998 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 11:03:45,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:03:16" (3/4) ... [2023-02-15 11:03:46,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 11:03:46,006 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 11:03:46,007 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 11:03:46,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-02-15 11:03:46,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-15 11:03:46,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-15 11:03:46,012 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 11:03:46,046 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 11:03:46,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 11:03:46,046 INFO L158 Benchmark]: Toolchain (without parser) took 30132.06ms. Allocated memory was 130.0MB in the beginning and 211.8MB in the end (delta: 81.8MB). Free memory was 85.6MB in the beginning and 166.4MB in the end (delta: -80.8MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,047 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 11:03:46,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.51ms. Allocated memory is still 130.0MB. Free memory was 85.6MB in the beginning and 75.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.54ms. Allocated memory is still 130.0MB. Free memory was 75.0MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,048 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 130.0MB. Free memory was 73.3MB in the beginning and 71.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,048 INFO L158 Benchmark]: RCFGBuilder took 386.49ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 71.9MB in the beginning and 145.8MB in the end (delta: -73.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,049 INFO L158 Benchmark]: TraceAbstraction took 29409.43ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 146.4MB in the beginning and 168.5MB in the end (delta: -22.1MB). Peak memory consumption was 124.3MB. Max. memory is 16.1GB. [2023-02-15 11:03:46,049 INFO L158 Benchmark]: Witness Printer took 48.25ms. Allocated memory is still 211.8MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 11:03:46,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.51ms. Allocated memory is still 130.0MB. Free memory was 85.6MB in the beginning and 75.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.54ms. Allocated memory is still 130.0MB. Free memory was 75.0MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 130.0MB. Free memory was 73.3MB in the beginning and 71.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.49ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 71.9MB in the beginning and 145.8MB in the end (delta: -73.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * TraceAbstraction took 29409.43ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 146.4MB in the beginning and 168.5MB in the end (delta: -22.1MB). Peak memory consumption was 124.3MB. Max. memory is 16.1GB. * Witness Printer took 48.25ms. Allocated memory is still 211.8MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 7, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 1052 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 854 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2395 IncrementalHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 198 mSDtfsCounter, 2395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 572 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 41 PreInvPairs, 75 NumberOfFragments, 273 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 693 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 526 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 710 ConstructedInterpolants, 3 QuantifiedInterpolants, 4076 SizeOfPredicates, 23 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 1150/2004 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: loop_entered == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (loop_entered == 0 && index2 % 4294967296 < 100000) || (((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) || ((unknown-#memory_int-unknown[array][array + index1 % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[array][array + index2 % 4294967296 * 4] % 4294967296 && index2 % 4294967296 < 100000) && index1 % 4294967296 < index2 % 4294967296) RESULT: Ultimate proved your program to be correct! [2023-02-15 11:03:46,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE