./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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_3.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 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:05:05,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:05:05,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:05:05,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:05:05,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:05:05,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:05:05,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:05:05,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:05:05,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:05:05,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:05:05,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:05:05,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:05:05,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:05:05,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:05:05,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:05:05,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:05:05,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:05:05,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:05:05,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:05:05,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:05:05,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:05:05,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:05:05,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:05:05,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:05:05,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:05:05,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:05:05,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:05:05,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:05:05,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:05:05,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:05:05,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:05:05,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:05:05,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:05:05,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:05:05,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:05:05,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:05:05,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:05:05,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:05:05,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:05:05,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:05:05,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:05:05,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:05:05,534 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:05:05,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:05:05,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:05:05,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:05:05,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:05:05,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:05:05,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:05:05,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:05:05,539 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:05:05,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:05:05,540 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:05:05,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:05:05,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:05:05,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:05:05,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:05:05,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:05:05,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:05:05,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:05:05,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:05:05,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:05:05,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:05:05,543 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:05:05,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:05:05,543 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:05:05,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e [2023-02-17 01:05:05,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:05:05,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:05:05,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:05:05,706 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:05:05,706 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:05:05,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2023-02-17 01:05:06,770 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:05:06,918 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:05:06,918 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2023-02-17 01:05:06,921 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5f23c04/32090cd24a0a45df8455571bc424caa9/FLAGa0ced9379 [2023-02-17 01:05:06,930 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5f23c04/32090cd24a0a45df8455571bc424caa9 [2023-02-17 01:05:06,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:05:06,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:05:06,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:05:06,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:05:06,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:05:06,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:05:06" (1/1) ... [2023-02-17 01:05:06,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bba12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:06, skipping insertion in model container [2023-02-17 01:05:06,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:05:06" (1/1) ... [2023-02-17 01:05:06,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:05:06,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:05:07,037 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_3.i[920,933] [2023-02-17 01:05:07,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:05:07,050 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:05:07,058 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_3.i[920,933] [2023-02-17 01:05:07,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:05:07,070 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:05:07,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07 WrapperNode [2023-02-17 01:05:07,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:05:07,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:05:07,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:05:07,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:05:07,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,089 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-02-17 01:05:07,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:05:07,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:05:07,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:05:07,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:05:07,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:05:07,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:05:07,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:05:07,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:05:07,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (1/1) ... [2023-02-17 01:05:07,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:05:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:07,139 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) [2023-02-17 01:05:07,155 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 [2023-02-17 01:05:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:05:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 01:05:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 01:05:07,208 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:05:07,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:05:07,291 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:05:07,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:05:07,296 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 01:05:07,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:05:07 BoogieIcfgContainer [2023-02-17 01:05:07,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:05:07,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:05:07,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:05:07,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:05:07,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:05:06" (1/3) ... [2023-02-17 01:05:07,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f3a531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:05:07, skipping insertion in model container [2023-02-17 01:05:07,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:05:07" (2/3) ... [2023-02-17 01:05:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f3a531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:05:07, skipping insertion in model container [2023-02-17 01:05:07,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:05:07" (3/3) ... [2023-02-17 01:05:07,303 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.i [2023-02-17 01:05:07,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:05:07,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:05:07,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:05:07,367 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;@45e7ba25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:05:07,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:05:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2023-02-17 01:05:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 01:05:07,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:07,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:07,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:07,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1156778892, now seen corresponding path program 1 times [2023-02-17 01:05:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69758624] [2023-02-17 01:05:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69758624] [2023-02-17 01:05:07,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69758624] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:05:07,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:05:07,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 01:05:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038810805] [2023-02-17 01:05:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:05:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 01:05:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 01:05:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 01:05:07,735 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:05:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:07,809 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-02-17 01:05:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 01:05:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 01:05:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:07,816 INFO L225 Difference]: With dead ends: 40 [2023-02-17 01:05:07,816 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 01:05:07,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 01:05:07,837 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:07,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:05:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 01:05:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2023-02-17 01:05:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:05:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-02-17 01:05:07,859 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2023-02-17 01:05:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:07,859 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-02-17 01:05:07,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:05:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-02-17 01:05:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 01:05:07,860 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:07,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:07,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 01:05:07,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1156719310, now seen corresponding path program 1 times [2023-02-17 01:05:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339126555] [2023-02-17 01:05:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339126555] [2023-02-17 01:05:07,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339126555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:05:07,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:05:07,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 01:05:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667594011] [2023-02-17 01:05:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:05:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 01:05:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 01:05:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 01:05:07,925 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:05:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:07,940 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-02-17 01:05:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 01:05:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 01:05:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:07,941 INFO L225 Difference]: With dead ends: 36 [2023-02-17 01:05:07,941 INFO L226 Difference]: Without dead ends: 25 [2023-02-17 01:05:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 01:05:07,942 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:07,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:05:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-17 01:05:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2023-02-17 01:05:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-02-17 01:05:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-17 01:05:07,946 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2023-02-17 01:05:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:07,946 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-17 01:05:07,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:05:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-17 01:05:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 01:05:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:07,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:07,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 01:05:07,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash 723292333, now seen corresponding path program 1 times [2023-02-17 01:05:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:07,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077425981] [2023-02-17 01:05:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077425981] [2023-02-17 01:05:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077425981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496269443] [2023-02-17 01:05:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:08,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:08,022 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) [2023-02-17 01:05:08,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:05:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-17 01:05:08,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:08,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2023-02-17 01:05:08,121 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:08,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-17 01:05:08,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:08,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 20 [2023-02-17 01:05:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:08,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:05:08,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-02-17 01:05:08,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:08,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:05:08,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:08,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 305 [2023-02-17 01:05:08,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:08,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1060 treesize of output 814 [2023-02-17 01:05:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:08,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496269443] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:05:08,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:05:08,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8] total 14 [2023-02-17 01:05:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432651844] [2023-02-17 01:05:08,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:05:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 01:05:08,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 01:05:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-17 01:05:08,625 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2023-02-17 01:05:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:08,920 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2023-02-17 01:05:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 01:05:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 01:05:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:08,921 INFO L225 Difference]: With dead ends: 61 [2023-02-17 01:05:08,921 INFO L226 Difference]: Without dead ends: 50 [2023-02-17 01:05:08,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2023-02-17 01:05:08,923 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:08,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 68 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:05:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-17 01:05:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 16. [2023-02-17 01:05:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-02-17 01:05:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-02-17 01:05:08,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2023-02-17 01:05:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:08,932 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-02-17 01:05:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2023-02-17 01:05:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-02-17 01:05:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 01:05:08,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:08,933 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:08,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:05:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:09,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1125888878, now seen corresponding path program 2 times [2023-02-17 01:05:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470698659] [2023-02-17 01:05:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470698659] [2023-02-17 01:05:09,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470698659] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924581408] [2023-02-17 01:05:09,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:05:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:09,225 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) [2023-02-17 01:05:09,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:05:09,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:05:09,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:05:09,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 01:05:09,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:09,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2023-02-17 01:05:09,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-02-17 01:05:09,336 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:09,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2023-02-17 01:05:09,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 95 [2023-02-17 01:05:09,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 26 [2023-02-17 01:05:09,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:09,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 33 [2023-02-17 01:05:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:09,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:05:09,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-02-17 01:05:09,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:09,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 91 [2023-02-17 01:05:09,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 01:05:09,641 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 01:05:09,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:09,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 575 treesize of output 617 [2023-02-17 01:05:09,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:09,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3204 treesize of output 2684 [2023-02-17 01:05:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:05:10,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924581408] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:05:10,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:05:10,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 9] total 17 [2023-02-17 01:05:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337881834] [2023-02-17 01:05:10,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:05:10,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 01:05:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 01:05:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-17 01:05:10,052 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 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) [2023-02-17 01:05:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:10,618 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2023-02-17 01:05:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 01:05:10,619 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-17 01:05:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:10,619 INFO L225 Difference]: With dead ends: 84 [2023-02-17 01:05:10,619 INFO L226 Difference]: Without dead ends: 73 [2023-02-17 01:05:10,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2023-02-17 01:05:10,620 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 315 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:10,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 51 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 01:05:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-17 01:05:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2023-02-17 01:05:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-02-17 01:05:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-17 01:05:10,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2023-02-17 01:05:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:10,628 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-17 01:05:10,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 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) [2023-02-17 01:05:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-17 01:05:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 01:05:10,629 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:10,630 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:10,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 01:05:10,836 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,SelfDestructingSolverStorable3 [2023-02-17 01:05:10,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1178611616, now seen corresponding path program 1 times [2023-02-17 01:05:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:10,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160871026] [2023-02-17 01:05:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160871026] [2023-02-17 01:05:10,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160871026] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044326304] [2023-02-17 01:05:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:10,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:10,924 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) [2023-02-17 01:05:10,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:05:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:10,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 01:05:10,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:10,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:05:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:11,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044326304] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:05:11,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:05:11,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 01:05:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932248354] [2023-02-17 01:05:11,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:05:11,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 01:05:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 01:05:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-17 01:05:11,029 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2023-02-17 01:05:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:11,206 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2023-02-17 01:05:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 01:05:11,206 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-17 01:05:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:11,207 INFO L225 Difference]: With dead ends: 102 [2023-02-17 01:05:11,207 INFO L226 Difference]: Without dead ends: 89 [2023-02-17 01:05:11,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2023-02-17 01:05:11,208 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 165 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:11,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 121 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:05:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-17 01:05:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 24. [2023-02-17 01:05:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2023-02-17 01:05:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-02-17 01:05:11,223 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2023-02-17 01:05:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:11,223 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-02-17 01:05:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2023-02-17 01:05:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-02-17 01:05:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 01:05:11,224 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:11,224 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:11,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:05:11,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:11,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:11,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 515460421, now seen corresponding path program 2 times [2023-02-17 01:05:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:11,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633786403] [2023-02-17 01:05:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:11,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633786403] [2023-02-17 01:05:11,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633786403] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:11,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622437479] [2023-02-17 01:05:11,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:05:11,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:11,564 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) [2023-02-17 01:05:11,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:05:11,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:05:11,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:05:11,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 01:05:11,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:11,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:05:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:11,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622437479] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:05:11,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:05:11,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-02-17 01:05:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661384658] [2023-02-17 01:05:11,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:05:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 01:05:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:05:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 01:05:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2023-02-17 01:05:11,968 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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) [2023-02-17 01:05:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:05:12,895 INFO L93 Difference]: Finished difference Result 212 states and 241 transitions. [2023-02-17 01:05:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 01:05:12,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-17 01:05:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:05:12,896 INFO L225 Difference]: With dead ends: 212 [2023-02-17 01:05:12,896 INFO L226 Difference]: Without dead ends: 199 [2023-02-17 01:05:12,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=506, Unknown=0, NotChecked=0, Total=812 [2023-02-17 01:05:12,897 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 789 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:05:12,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 535 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 01:05:12,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-02-17 01:05:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 34. [2023-02-17 01:05:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-02-17 01:05:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2023-02-17 01:05:12,911 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2023-02-17 01:05:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:05:12,912 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2023-02-17 01:05:12,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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) [2023-02-17 01:05:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2023-02-17 01:05:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 01:05:12,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:05:12,913 INFO L195 NwaCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:05:12,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 01:05:13,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:13,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:05:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:05:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1960444453, now seen corresponding path program 3 times [2023-02-17 01:05:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:05:13,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988435944] [2023-02-17 01:05:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:05:13,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:05:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:05:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:05:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:05:13,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988435944] [2023-02-17 01:05:13,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988435944] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:05:13,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111352981] [2023-02-17 01:05:13,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 01:05:13,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:05:13,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:05:13,533 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) [2023-02-17 01:05:13,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:05:55,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-17 01:05:55,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:05:55,178 WARN L261 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 145 conjunts are in the unsatisfiable core [2023-02-17 01:05:55,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:05:55,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 90 [2023-02-17 01:05:55,239 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:55,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2023-02-17 01:05:55,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 196 [2023-02-17 01:05:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:05:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:05:55,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 166 [2023-02-17 01:05:55,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 929 treesize of output 881 [2023-02-17 01:05:55,386 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:55,400 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:55,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 199 [2023-02-17 01:05:55,414 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:05:55,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:05:55,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 01:05:55,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:05:55,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2141 treesize of output 2234 [2023-02-17 01:05:58,511 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:06:09,863 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 01:06:09,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 873633 treesize of output 825695 [2023-02-17 01:07:21,344 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 01:07:21,400 WARN L207 Elim1Store]: Array PQE input equivalent to false